This document provides an overview of mechanical seal piping plans used by Flowserve's Flow Solutions Division. It summarizes 14 single seal plans and 8 dual/quench/gas seal plans. Each plan page shows a seal end view diagram, description of what the plan is, why it is used, where it is applicable, and tips for preventative maintenance. The plans provide ways to keep mechanical seals running cleanly and cool through circulation of barrier fluids.
Safety is the most important factor in designing a process system. Some undesired conditions might happen leading to damage in a system. Control systems might be installed to prevent such conditions, but a second safety device is also needed. One kind of safety device which is commonly used in the processing industry is the relief valve. A relief valve is a type of valve to control or limit the pressure in a system by allowing the pressurised fluid to flow out from the system.
Safety is the most important factor in designing a process system. Some undesired conditions might happen leading to damage in a system. Control systems might be installed to prevent such conditions, but a second safety device is also needed. One kind of safety device which is commonly used in the processing industry is the relief valve. A relief valve is a type of valve to control or limit the pressure in a system by allowing the pressurised fluid to flow out from the system.
All valves require proper care and maintenance,as does other more complex equipment, to ensure theyare kept in optimum working order. The principledifficulties encountered with valves are leakage pastthe seat and disk, leakage at the stuffing box, stickingvalve stems, and loose valve disks.
Pressure Relief Valve Sizing for Single Phase FlowVikram Sharma
This presentation file provides a quick refresher to pressure relief valve sizing for single phase flow. The calculation guideline is as per API Std 520.
Here's a presentation on piping engineering in PDF format, now available for all. This presentation covers the basics points of piping for our EPC industry. This presentation covers various aspects of piping engineering
All valves require proper care and maintenance,as does other more complex equipment, to ensure theyare kept in optimum working order. The principledifficulties encountered with valves are leakage pastthe seat and disk, leakage at the stuffing box, stickingvalve stems, and loose valve disks.
Pressure Relief Valve Sizing for Single Phase FlowVikram Sharma
This presentation file provides a quick refresher to pressure relief valve sizing for single phase flow. The calculation guideline is as per API Std 520.
Here's a presentation on piping engineering in PDF format, now available for all. This presentation covers the basics points of piping for our EPC industry. This presentation covers various aspects of piping engineering
Effect of Geometric Configuration on Performance of Uniflow CycloneIJERD Editor
Reverse flow cyclones find wide applications in many industries however, they require a high
expenditure of energy and large pressure drops, which can be better overcome by uniflow cyclones. A
laboratory unit of Uniflow Cyclone has been developed with 45 mm inlet diameter. The performance
parameters pressure drop and total efficiency were studied for the effect of geometric configuration. The present
study includes the effect of 4 different geometric parameters on performance of uniflow cyclone. The geometric
variation of test cyclones includes the Inlet velocity, Vane angles, Outlet to inlet diameter ratio and Separation
lengths. The overall experimental results yield and investigated the optimal conditions for uniflow cyclone
performance is 450 vane angle, 0.5 outlet to inlet diameter ratio, 3D separation length and 9-10 m/s inlet
velocity. The experimental pressure drop values are validated with the model equations available in literature
and well matched for Ramachandran model.
various dust and gaseous pollutant separation techniques and devices. description of the devices such as their working, particle sizes removed, removal efficiency, mechanism involved etc.
AIR POLLUTION CONTROL course material by Prof S S JAHAGIRDAR,NKOCET,SOLAPUR for BE (CIVIL ) students of Solapur university. Content will be also useful for SHIVAJI and PUNE university students
Deals with UASB reactors for the primary treatment of sewage, stabilization of sludge and removal of BOD. Various components of a UASB reactor are described and design details are included. Modifications to UASB such as UASB ponds, Anaerobic baffle reactors, migrating blanket reactors are also described here.
Internal seal chamber flush from pump discharge.
Operates similar to Plan 11.
Why
Seal chamber heat removal.
Seal chamber venting on horizontal pumps.
Reduce risk of freezing/polymerizing fluid in exposed Plan 11 piping.
Where
Custom seal chamber, most likely an ANSI/ASME pump.
Clean, moderate temperature fluids.
Used with single seals, rarely with dual seals.
Preventative Maintenance
Flush typically can not be directed over seal faces and seal heat removal is limited.
Calculate flush flow rate based on head loss through internal porting.
Dry Pellet Chlorinator In-Line Chlorinator Model 400 Installation GuideClean Water Systems
Installation and start up guide for the Dry Pellet Chlorinator In-Line Chlorinator Model 400 by Clean Water Systems
View the full installation guide here: http://www.cleanwaterstore.com/technical/water-treatment-manuals/CWS_ChemicalFeeder.pdf
View the product here:http://www.cleanwaterstore.com/chlorine-pellet-feeder.html#item=CS000120&tab=tab1
For more products, how-to-guides, resources, and more, please visit: http://www.cleanwaterstore.com
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
3. For each piping plan identified in API Standard 682 2nd edition and recommended by
Flowserve, each page set of this book shows:
Seal End View Piping Plan Layout What, Why, and Where
Pump Cross-section Mechanical Seal
outlet
inlet
pressure source,
normally open
pressure gage
pressure switch
level switch (high)
level switch (low)
cooling in
cooling coils
drain,
normally closed
level gage
cooling out
reservoir
liquid fill,
normally closed
Flow Solutions Division
What
• Pressurized barrier fluid circulation through reservoir.
• Fluid is circulated by a pumping ring in the dual seal assembly.
Why
• Isolate process fluid.
• Zero process emissions.
Where
• Used with dual pressurized seals (Arrangement 3 or “double”).
• High vapor pressure fluids, light hydrocarbons.
• Hazardous/toxic fluids.
• Heat transfer fluids.
• Dirty/abrasive or polymerizing fluids.
• Mixers/agitators and vacuum service.
Presventative Maintenance - Reference Appendix A
• Piping loop must self-vent to reservoir locate at highest elevation.
• Reservoir must be pressurized at all times - typically gas charge up to 200 psi (14bar).
• Barrier fluid must be compatible with process.
• Reservoir level gage indicates both inboard and outboard seal leakage.
Plan53A
Plan53A
seal
end view
Preventative Maintenance
• Viewed from drive end
• Shows preferred gland
connection orientation
• Illustrated schematic
of auxiliary components
• Describes piping plans,
their purpose, and
typical applications
• Simplified centrifugal
pump shown for all
plans
• Shows typical seal
arrangements
• Provides general tips to
improve reliability and for
troubleshooting
5. Flow Solutions Division
Plan01
What
Internal seal chamber flush from pump discharge.
Operates similar to Plan 11.
Why
Seal chamber heat removal.
Seal chamber venting on horizontal pumps.
Reduce risk of freezing/polymerizing fluid in exposed Plan 11 piping.
Where
Custom seal chamber, most likely an ANSI/ASME pump.
Clean, moderate temperature fluids.
Used with single seals, rarely with dual seals.
Preventative Maintenance
Flush typically can not be directed over seal faces and seal heat removal is limited.
Calculate flush flow rate based on head loss through internal porting.
7. Flow Solutions Division
Plan02
What
Dead-ended seal chamber with no flush.
Why
Simplicity - no environmental controls.
Where
Large bore/open throat seal chambers in moderate temperature services.
Cooling jacket seal chambers in high temperature services.
Clean fluids.
Top-entry mixers/agitators with dry seals.
Preventative Maintenance
Process must have adequate boiling point margin to avoid vaporization.
Cooling fluid in seal chamber jacket may be needed at all times in hot services.
Often used in combination with steam quench, Plan 62.
9. Flow Solutions Division
Plan11
What
Seal flush from pump discharge through orifice.
Default single seal flush plan.
Why
Seal chamber heat removal.
Seal chamber venting on horizontal pumps.
Increase seal chamber pressure and fluid vapor margin.
Where
General applications with clean fluids.
Clean, non-polymerizing fluids.
Preventative Maintenance
Use an orifice with a minimum 0.125" (3 mm) diameter.
Calculate flow rates to size orifice for adequate seal chamber flow.
Increase boiling point margin with proper orifice and throat bushing sizing.
Flush should be directed over seal faces with piping at 12 O’clock position.
Typical failure mode is a clogged orifice - check temperatures at pipe ends.
11. Flow Solutions Division
Plan13
What
Recirculation from seal chamber to pump suction through orifice.
Standard flush plan on vertical pumps.
Why
Continuous seal chamber venting on vertical pumps.
Seal chamber heat removal.
Where
Vertical pumps.
Seal chamber pressure is greater than suction pressure.
Moderate temperature fluids with moderate solids.
Non-polymerizing fluids.
Preventative Maintenance
Vent piping loop prior to starting vertical pumps.
Use an orifice with a minimum 0.125" (3 mm) diameter.
Calculate flow rates to size orifice for adequate seal chamber flow.
Reduce seal chamber pressure with proper orifice and throat bushing sizing.
Typical failure mode is a clogged orifice - check temperatures at pipe ends.
13. Flow Solutions Division
Plan14
What
Seal flush from pump discharge and recirculation to pump suction with orifices.
Combination of Plan 11 and Plan 13.
Why
Continuous seal chamber venting on vertical pumps.
Seal chamber heat removal.
Increase seal chamber pressure and fluid vapor margin.
Where
Vertical pumps.
Clean, non-polymerizing fluids at moderate temperatures.
Preventative Maintenance
Use an orifice with a minimum 0.125" (3 mm) diameter.
Calculate flow rates to size orifice for adequate seal chamber flow.
Increase boiling point margin with proper orifice and throat bushing sizing.
Flush should be directed over seal faces.
Vent piping loop prior to starting vertical pumps.
Typical failure mode is a clogged orifice - check temperatures at pipe ends.
15. Flow Solutions Division
Plan21
What
Seal flush from pump discharge through orifice and cooler.
Cooler in Plan 11 flush increases heat removal.
Why
Seal cooling.
Reduce fluid temperature to increase fluid vapor margin.
Reduce coking.
Where
High temperature service, typically less than 350° F (177° C).
Hot water over 180° F (80° C).
Clean, non-polymerizing fluids.
Preventative Maintenance
Seal cooler and piping must have air vents at highest elevation - vent before starting.
When using 682 Seal Cooler, pipe with series flow to maximize heat transfer.
Use an orifice with a minimum 1/8" (3 mm) diameter.
Calculate flow rates to size orifice for adequate seal chamber flow.
Increase boiling point margin with proper orifice and throat bushing sizing.
Regularly monitor device inlet and outlet temperatures for signs of clogging or fouling.
17. Flow Solutions Division
Plan23
What
Seal flush from internal pumping device through cooler.
Standard flush plan in hot water services.
Why
Efficient seal cooling with low cooler duty.
Increase fluid vapor margin.
Improve water lubricity.
Where
High temperature service, hot hydrocarbons.
Boiler feed water and hot water over 180° F (80° C).
Clean, non-polymerizing fluids.
Preventative Maintenance - Reference Appendix A
Seal cooler and piping must have air vents at highest elevation - vent before starting.
When using 682 Seal Cooler, pipe with parallel flow to minimize head loss.
Seal chamber requires close clearance throat bushing to isolate process fluid.
Tangential seal gland taps should enter at bottom and exit at top.
Regularly monitor cooler inlet and outlet temperatures for signs of plugging or fouling.
Process fluids with iron should flow through magnetic separator before cooler.
19. Flow Solutions Division
Plan31
What
Seal flush from pump discharge through cyclone separator.
Centrifuged solids are returned to pump suction.
Why
Seal chamber heat removal.
Solids removal from flush and seal chamber.
Where
Dirty or contaminated fluids, water with sand or pipe slag.
Non-polymerizing fluids.
Preventative Maintenance
Cyclone separator works best on solids with a specific gravity twice the process fluid.
Seal chamber pressure must be nearly equal to suction pressure for proper flows.
Piping should not include an orifice and is not expected to vent the seal chamber.
Typical failure mode is clogged separator or pipes - check temperatures at pipe ends.
21. Flow Solutions Division
Plan32
What
Seal flush from an external clean source.
Why
Seal chamber heat removal.
Process and solids removal from seal chamber.
Increase seal chamber pressure and fluid vapor margin.
Where
Dirty or contaminated fluids, paper pulp.
High temperature service.
Polymerizing and/or oxidizing fluids.
Preventative Maintenance
Use throat bushing sized to hold pressure or maintain flow velocity.
To restrict dirty process fluid, regulate injection flow rate.
To increase fluid vapor margin, regulate injection pressure.
Injection fluid must be compatible with process fluid.
Regularly monitor control system for closed valves or signs of plugging.
23. Flow Solutions Division
Plan41
What
Seal flush from pump discharge through cyclone separator and cooler.
Combination of Plan 21 and Plan 31.
Why
Seal cooling.
Solids removal from flush and seal chamber.
Where
High temperature service, typically less than 350° F (177° C).
Dirty or contaminated fluids, water with sand or pipe slag.
Non-polymerizing fluids.
Preventative Maintenance
Seal cooler and piping must have air vents at highest elevation - vent before starting.
When using 682 Seal Cooler, pipe with series flow to maximize heat transfer.
Cyclone separator works best on solids with a specific gravity twice the process fluid.
Seal chamber pressure must be nearly equal to suction pressure for proper flows.
Typical failure mode is clogged separator or pipes - check temperatures at pipe ends.
25. Flow Solutions Division
Plan52
What
Unpressurized buffer fluid circulation through reservoir.
Fluid is circulated by a pumping ring in the dual seal assembly.
Why
Outboard seal acts as a safety backup to the primary seal.
Zero to very low process emissions.
No process contamination is allowed.
Where
Used with dual unpressurized seals (“tandem”).
High vapor pressure fluids, light hydrocarbons.
Hazardous/toxic fluids.
Heat transfer fluids.
Preventative Maintenance - Reference Appendix B
Piping loop must self-vent to vapor recovery/flare system near atmospheric pressure.
Process vapor pressure is generally greater than reservoir pressure.
Buffer fluid must be compatible with process leakage.
Primary seal leakage is indicated by increased vent pressure.
Reservoir level gage indicates outboard seal leakage.
26. Plan53A
seal
end view
outlet
inlet
pressure source,
normally open
pressure gage
pressure switch
level switch (high)
level switch (low)
cooling coils
cooling in
drain,
normally
closed
cooling out
reservoir
liquid fill,
normally closed
level gage
27. Flow Solutions Division
Plan53A
What
Pressurized barrier fluid circulation through reservoir.
Fluid is circulated by a pumping ring in the dual seal assembly.
Why
Isolate process fluid.
Zero process emissions.
Where
Used with dual pressurized seals (“double”).
High vapor pressure fluids, light hydrocarbons.
Hazardous/toxic fluids.
Heat transfer fluids.
Dirty/abrasive or polymerizing fluids.
Mixers/agitators and vacuum service.
Preventative Maintenance - Reference Appendix B
Piping loop must self-vent to reservoir located at highest elevation.
Pressurize reservoir at all times, maximum gas charge 150 - 200 psi (10 - 14 bar).
Barrier fluid must be compatible with process.
Reservoir level gage indicates both inboard and outboard seal leakage.
29. Flow Solutions Division
Plan53B
What
Pressurized barrier fluid circulation with bladder accumulator.
Fluid is circulated by a pumping ring in the dual seal assembly.
Why
Isolate process fluid.
Zero process emissions.
Higher pressure than Plan 53A.
Where
Used with dual pressurized seals (“double”).
High vapor pressure fluids, light hydrocarbons.
Hazardous/toxic fluids.
Heat transfer fluids.
Dirty/abrasive or polymerizing fluids.
Preventative Maintenance - Reference Appendix B
Piping loop must be fully vented before starting.
Accumulator must be pressurized at all times, usually by gas charge.
Barrier fluid must be compatible with process.
Regularly monitor barrier pressure - manually add barrier fluid when pressure decays.
31. Flow Solutions Division
Plan53C
What
Pressurized barrier fluid circulation with piston accumulator.
Fluid is circulated by a pumping ring in the dual seal assembly.
Why
Isolate process fluid.
Zero process emissions.
Higher pressure than Plan 53A.
Dynamic tracking of system pressure.
Where
Used with dual pressurized seals (“double”).
High vapor pressure fluids, light hydrocarbons.
Hazardous/toxic fluids.
Heat transfer fluids.
Preventative Maintenance - Reference Appendix B
Piping loop must be fully vented before starting.
Reference line must tolerate process contamination without plugging.
Barrier fluid must be compatible with process.
Reservoir level gage indicates both inboard and outboard seal leakage.
33. Flow Solutions Division
Plan54
What
Pressurized barrier fluid circulation by external system.
Why
Isolate process fluid.
Zero process emissions.
Seal cannot induce circulation.
Where
Used with dual pressurized seals (“double”).
High vapor pressure fluids, light hydrocarbons.
Hazardous/toxic fluids.
Heat transfer fluids.
Dirty/abrasive or polymerizing fluids.
Mixers/agitators.
Preventative Maintenance
Piping loop must be fully vented before starting.
Circulating system must be pressurized and energized at all times.
Barrier fluid must be compatible with process.
Circulating system level gage indicates both inboard and outboard seal leakage.
35. Flow Solutions Division
Plan62
What
External quench on atmospheric side of seal.
Quench fluids typically steam, nitrogen, or water.
Why
Prevent solids buildup on atmospheric side of seal.
Prevent icing.
Where
Used with single seals.
Oxidizing fluids or fluids that coke, hot hydrocarbons.
Crystallizing fluids or fluids that salt out.
Caustic.
Cold fluids less than 32° F (0° C).
Preventative Maintenance
Quench inlet should be on top of gland with outlet/drain on bottom.
Quench pressure should be limited to 3 psi (0.2 bar) or less.
Use throttle bushing on atmospheric side of seal to direct quench flow to seal drain.
Monitor regularly, checking for closed valves, blocked lines, and steam trap condition.
36. Plan72
seal
end view
vent
drain
inlet
1
3
2
C
D
A
B
E
F
H
G
1 - drain
2 - vent
3 - gas inlet, normally open
4 - filter drain, normally closed
4
A - filter
B - regulator
C - orifice
D - flow meter
E - flow switch
F - pressure switch
G - pressure gage
H - check valve
37. Flow Solutions Division
Plan72
What
Unpressurized buffer gas control system.
Containment seal support typically with nitrogen buffer gas.
Why
Zero to very low process emissions.
Safety backup to primary seal.
Where
Used with dual unpressurized containment seals (“tandem”).
High vapor pressure fluids, light hydrocarbons.
Hazardous/toxic fluids.
Clean, non-polymerizing, non-oxidizing fluids.
Used in combination with Plan 75 and/or Plan 76.
Preventative Maintenance
Clean, reliable, low pressure gas must be supplied to seal at all times.
Bottled gas supply is not recommended except as part of emergency backup system.
Primary seal leakage is indicated by pressure in the vent line.
Vent or drain are usually connected to low pressure vapor recovery/flare system.
38. Plan74
seal
end view
drain
inlet
1
3
2
C
D
A B
EF
G
1 - upset drain, normally closed
2 - gas inlet, normally open
3 - filter drain, normally closed
A - filter
B - regulator
C - flow meter
D - flow switch
E - pressure switch
F - pressure gage
G - check valve
39. Flow Solutions Division
Plan74
What
Pressurized barrier gas control system.
Gas seal support typically with nitrogen barrier gas.
Why
Isolate process fluid.
Zero process emissions.
Where
Used with dual pressurized gas seals (“double”).
High vapor pressure fluids, light hydrocarbons.
Hazardous/toxic fluids.
Services that do not tolerate liquid barrier seals.
Clean, non-polymerizing fluids.
Moderate temperature fluids.
Preventative Maintenance
Clean, reliable, pressurized gas must be supplied to seal at all times.
Barrier pressure is typically at least 25 psig (1.75 bar) above seal chamber pressure.
Flow meter indicates both inboard and outboard seal leakage.
Bottled gas supply is not recommended except as part of emergency backup system.
41. Flow Solutions Division
Plan75
What
Drain from containment seal cavity to liquid collector and vapor recovery.
Why
Leakage collection for zero to very low process emissions.
Safety indicator for primary seal.
Where
May be used alone or with Plan 72 on containment seals.
Fluids that condense at ambient temperature.
High vapor pressure fluids, light hydrocarbons.
Hazardous/toxic fluids.
Clean, non-polymerizing, non-oxidizing fluids.
Preventative Maintenance
Collection reservoir must be located below seal drain and downward-sloped piping.
Continuously vent collection reservoir to low pressure vapor recovery/flare system.
Drain collection reservoir to liquid recovery system as needed.
Primary seal leakage is indicated by increased vent pressure.
Monitor regularly for liquid level, valve settings, and low vent pressure.
43. Flow Solutions Division
Plan76
What
Vent from containment seal cavity to vapor recovery.
Why
Leakage collection for zero to very low process emissions.
Safety indicator for primary seal.
Where
May be used alone or with Plan 72 on containment seals.
Fluids that do not condense at ambient temperature.
High vapor pressure fluids, light hydrocarbons.
Hazardous/toxic fluids.
Clean, non-polymerizing, non-oxidizing fluids.
Preventative Maintenance
Continuously vent to low pressure vapor recovery/flare system.
Vent piping should include a condensate drain.
Primary seal leakage is indicated by increased vent pressure.
Monitor regularly for valve settings, blocked lines, and low vent pressure.
44. seal
side view
seal
end view
3 ft. (0.9 m) max
1.5 - 2 ft.
(0.45 - 0.6 m)
Minimize line losses
Large diameter tubing
Upward sloping lines
Long radius bends
high point vent
low point drain
Vertical
Equipment
Horizontal
Equipment
AppendixA Good Piping Practices Single Seals - Plan 23 shown
46. Accessories
Airfin CoolersTM
Forced air or natural
convection seal coolers.
Reservoirs
General duty and
API 682 compliant
reservoirs.
Seal Cooler
Compact design
dual coil seal
cooler
Plans 21, 23 & 41 Plans 21, 23 & 41 Plans 21, 23 & 41
API 682
Seal Cooler
Seal cooler for
complete API 682
specifications.
Plans 53, 53A & 53B
47. Flow Solutions Division
Accessories
Circulator
Standalone dual seal
support system.
Gas Barrier
Control Panel
Complete control
system for dual gas
seals.
Refill Cart
Mobile cart to
manually fill liquid
reservoirs.
Plan 54 Plans 52 & 53 Plans 72 & 74
Piston
Accumulator
Hydraulically charged
reservoir for dual
seals.
Plan 53C
48. Accessories
Orifice
Plug and plate
style flush line
orifices.
Magnetic Separator
Iron particle separator
for seal flush.
Plans 11, 13, 14, & 21 Plans 31 & 41
Cyclone Separator
Solid particle separator
used in dirty flush
stream.
Plan 23
Seal Gard I & II
Combination flush
flow regulator and
meter.
Plan 32
49. Flow Solutions Division
Accessories
Gestra®
Steam Trap
Family of reliable
steam traps for
quench flows.
Bearing Gard II
& BGM
Bearing frame
protection devices.
SLD
Quench lubrication
device with
synthetic grease.
Plan 62 Plan 62 modified
DuraClear
Synthetic lubricants
from barrier fluid to
bearing oil.
Plans 52, 53 & 54
54. For your nearest Flow Solutions Division Service
and Sales location, look on the “Contact Us” page of
The information and specifications presented in these piping plans are believed to be accurate, but are supplied for information purposes only and should not be considered certified or as a
guarantee of satisfactory results by reliance thereon. Nothing contained herein is to be construed as a warranty or guarantee, express or implied, with respect to the product. Although Flowserve
Corporation can provide general application guidelines, it cannot provide specific information for all possible applications. The purchaser/user must therefore assume the ultimate responsibility for
the proper selection, installation, operation and maintenance of Flowserve products. Because Flowserve Corporation is continually improving and upgrading its product design, the specifications,
dimensions and information contained herein are subject to change without notice.
Flowserve Corporation Flow Solutions Division
Primary Worldwide Flow Solutions Division Locations Licensees, authorized agents, and affiliated companies located worldwide
GermanyBrazilMexico
Kalamazoo, MI
Phone 269-381-2650
Fax 269-382-8726
United States
Roosendaal
Phone 31-165-581400
Fax 31-165-552622
Netherlands
Dortmund
Phone 49-231-6964-0
Fax 49-231-6964-248
Edmonton, Alberta
Phone 780-464-1188
Fax 780-464-1801
Canada
Sao Paulo
Phone 55-11-4231-6300
Fax 55-11-4231-6326
Tlaxcala
Phone 52-2-461-6791
Fax 52-2-461-6847
Phone 65-6-8465100
Fax 65-6-747-1963
Osaka
Phone 81-72-885-5571
Fax 81-72-885-5575
Singapore Japan
Buenos Aires
Phone 54-11-4709-6800
Fax 54-11-4709-6800 ext 123
Argentina Australia
Marayong NSW
Phone 61-2-8822-7100
Fax 61-2-9679-7511
Scarborough, Ontario
Phone 416-292-2877
Fax 416-292-5190
www.Flowserve.com
REV 12/03
FTA160
Flow Solutions Division