Dycon valves are manufactured with ASTM pressure containment materials, tested in accordance with ASME section VIII of the specification and fully functionally tested before dispatch. The unique pressure balance of the valve allows the regulator to be both internally and externally sensed – providing for various different types of control modes, some of which include pilot valves, loading regulators and P.I.P. Ratings of the valves conform to two standards namely 300# and 1500# ANSI class and are rare manufactured from a variety of materials.Ratings of the valves conform to two standards namely 300# and 1500# ANSI class and are rare manufactured from a variety of materials.

1. Regulator Control Valves - Series 5000
Dycon valves are manufactured with ASTM pressure
containment materials, tested in accordance with ASME
section VIII of the specification and fully functionally tested
before dispatch.
The unique pressure balance of the valve allows the
regulator to be both internally and externally sensed –
providing for various different types of control modes, some
of which include pilot valves, loading regulators and P.I.P.
Flowing velocities are not restricted due to the unique
design principles employed within the valve, some of which
include heavy guiding of the main piston and bushing of the
spindle.
Ratings of the valves conform to two standards namely 300# and 1500# ANSI
class and are rare manufactured from a variety of materials.
Specifications
Port size – ½” to 2” NPT or BSP female 3” and 4” flanged.
Materials – Carbon steel, stainless steel and Bronze as standard others on request.
Rating – 300 to 1500 ANSI class.
Product Overview
5001- Dome Loaded Pressure Reducing Valve
5021- Dome Loaded Pressure Reducing Valve with Negative Bias
5005 - Dome Loaded Back Pressure Valve
5013 - Spring Loaded Pressure Reducing Valve
5023 - Pressure Reducing Valve w/Negative Bias
5013HT - High Temperature Pressure Reducing Valve
5016HT - High Temperature Back Pressure Valve
5014 - Differential Pressure Reducing Valve
5017 - Differential Back Pressure Valve
5016 - Spring Loaded Back Pressure Valve

2. 5001 - Dome Loaded Pressure Reducing Valve
5021 - Dome Regulated Pressure Reducing Valve
w/ Negative Bias
Product Overview
The 5001 and 5021 are our basic Dome
Loaded Regulator. 5001 is a standard 1:1
repeater, allowing the set point to be directly
proportional to the output, where as the 5021
has an internal spring to provide even better
shut off performance when exposed to high
pressure drops.
Materials of Construction
Material Specification Grade
Carbon steel ASTM A216 WCB
ST. STL (316) ASTM A351 CF3M
Bronze ASTM C9220 B61
Dome Loaded Pressure
Reducing Valve Model 5021
Features
Full port area
Balanced for low inlet pressure effect
Cage guided plug minimizes vibration
Rolling Diaphragm
Typical Flow Curve
Specification
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3. 5005 - Dome Loaded Back Pressure Valve
Product Overview
The 5005 is similar in function to the 5001
when process or air loaded actuation is
required, but acts as a back pressure relief
valve and provides for close control where
accuracy is the main criteria.
Materials of Construction
Material Specification Grade
Carbon steel ASTM A216 WCB
ST. STL (316) ASTM A351 CF3M
Bronze ASTM C9220 B61
Dome Loaded Pressure Reducing Valve
Model 5005
Features
Full port area
Balanced for low inlet pressure effect
Cage guided plug minimizes vibration
Rolling Diaphragm
Typical Flow curve
Specification
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4. 5013 - Spring Loaded Pressure Reducing Valve
5023 - Pressure Reducing Valve with Negative Bias
Product Overview
These are our simplest and easiest valves to
install as they do not require any other type
of media to perform actuation. The 5023
valve provides for negative bias where again
tight shut off is a prerequisite.
Materials of Construction
Material Specification Grade
Carbon steel ASTM A216 WCB
ST. STL (316) ASTM A351 CF3M
Bronze ASTM C9220 B61
Spring Loaded Pressure Reducing Valve
Model 5013
Features
Full port area
Balanced for low inlet pressure effect
Cage guided plug minimizes vibration
Rolling Diaphragm
Typical Flow curve
Specification
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5. 5013HT - High Temperature Pressure Reducing Valve
5016HT - High Temperature Back Pressure Valve
Product Overview
Both of these valves maintain the same lower
body construction of the 5016, but by the use
of special seals and internal parts the valves
can be installed in applications where media
temperature exceed the norm. In addition to
the standard coil spring, Belleville washers
can also be fitted therefore providing for
higher set points.
Materials of Construction
Material Specification Grade
Carbon steel ASTM A216 WCB
ST. STL (316) ASTM A351 CF3M
Bronze ASTM C9220 B61
Model Shown 5016 HT
(Belleville washers)
Features
Full port area
Balanced for low inlet pressure effect
Cage guided plug minimizes vibration
Rolling Diaphragm
Typical Flow Curve
Specification
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6. 5014 - Differential Pressure Reducing Valve
5017 - Differential Back Pressure Valve
Product Overview
Whilst similar in construction to the 5013,
the 5014 valve provides for a sealed spring
chamber which allows for either a biasing
or a reference pressure to be applied to the
spring chamber. This in turn augments the
force of the spring and is used when a flow
limiting application is required.
Type 5017 is the back pressure version of
this range, and incorporates all the features
of the 5016 valve, but adds the benefits of
a flow limited to a differential pressure
reference.
Materials of Construction
Material Specification Grade
Carbon steel ASTM A216 WCB
ST. STL (316) ASTM A351 CF3M
Bronze ASTM C9220 B61
Features
Full port area
Balanced for low inlet pressure effect
Cage guided plug minimizes vibration
Rolling Diaphragm
Typical Flow Curve
Specification
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7. 5016 - Spring Loaded Back Pressure Valve
Product Overview
Similar in construction to the 5013 and
offering the same benefits, the 5016 is used
when the control of the upstream media is
required to be in a relieving mode.
Materials of Construction
Material Specification Grade
Carbon steel ASTM A216 WCB
ST. STL (316) ASTM A351 CF3M
Bronze ASTM C9220 B61
Spring Loaded Back Pressure Valve
Model 5016
Features
Full port area
Balanced for low inlet pressure effect
Cage guided plug minimizes vibration
Rolling Diaphragm
Typical Flow Curve
Specification
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8. Regulator Control Valves - Series 2000
This standard series of reducing valves has been
specifically designed to reduce inlet pressure of up to 343
bar (5000psi) when manufacturing in stainless steel and
270Barg (4060psi) when manufactured in brass. Both
versions will deliver accurate outlet pressure control from 0
to 270 bar (0-4000psi).
In addition to our standard range, a high pressure stainless
steel version is available which provides accurate outlet
pressure control from a maximum inlet pressure of 400 bar
(6000 psi). The outlet pressure control is similar to that of
the standard range, but has added setting range of 0 to 350
bar (5000 psi).
The wide range of seals on offer enables a multitude of gases or liquids to be controlled
accurately, whilst integral filters, should the application so dedicate, provide the necessary
protection against the ingress of damaging particles.
Specifications
Port Size – ¼” ½” and ¾”, NPT or BSO.
Material – brass or stainless steel.
Inlet Pressure – 280bar (4000psi) brass 343 bar (5000psi) stainless steel.
Product Overview
2250 Self-Venting Regulator Valve
2251 Non-Venting Regulator Valve
2252 Pressure Regulator w/Encapsulated Vent
2253 Lockable Regulator Valve
2254 Non-Venting Pressure Regulator w/Gas Monitoring Port
2255 Non-Venting Diaphragm Operated Pressure Regulator Valve
2257 Self-Vented Diaphragm Operated Pressure Regulator
2258 Non-Vented Lockable Pressure Regulator Valve
2259 Self-Venting Lockable Cartridge Style Pressure Regulator Valve

9. 2250 - Self-Venting Regulator Valve
2251 - Non-Venting Regulator Valve
2252 - Pressure Regulator with Encapsulated Vent
Product Overview
Self-Venting Regulator Valve 2250
Type 2250 is our basic hand operated pressure
regulator which is mainly used when the
downstream pressure can be vented to
atmosphere at the controller. Available in two
sizes: 1/2" and 3/4" (50mm/ 75mm) with
material variants Stainless Steel and Brass.
Non-Venting Regulator Valve 2251
With similar features to the 2250, this regulator
is designed for use when the downstream
pressure decays over a time period. Available
sizes 1/4", 1/2", and 3/4" materials similar to the
2250.
Pressure Regulator with Encapsulated
Vent 2252
Type 2252 is used where the features of the
2250 are required but the media cannot be
safely vented to a more suitable place.
Self Venting Regulator Valve 2250
Materials of Construction
Material Specification Grade
ST. STL (316) BS 970 316S11
Brass BS 2874 CZ 121
Features
Suitable for most gases and liquids
Balanced stem no turn down
Soft seat gives Ansi Class VI leakage
Low torque hand wheel
Typical Flow Characteristics
for 1/2" and 3/4" regulators
Specification
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10. 2253 - Lockable Regulator Valve
2254 - Non-Venting Pressure Regulator w/Gas Monitoring Port
2255 - Non-Venting Diaphragm Operated Pressure Regulator Valve
Product Overview
Lockable Regulator Valve 2253
Using similar principles to the 2251, this valve has
the added feature of lockable adjustment. Sizes
and materials as per 2250.
Non-Venting Pressure Regulator with Gas
Monitoring Port 2254
Used when seal integrity is paramount to the safe
operation of the system and where external
indication from a remote point is a requirement.
Non-Venting Diaphragm Operated Pressure
Regulator Valve 2255
Designed for use in low pressure applications
where sensitivity to changes in downstream
pressure variation is a prerequisite for correct
operation.
Non-Venting Diaphragm Operated
Pressure Regulator 2255
Materials of Construction
Material Specification Grade
ST. STL (316) BS 970 316S11
Brass BS 2874 CZ 121
Features
Suitable for most grades and liquids
Balanced stem for no turn down
Soft seat gives ANSI Class VI Leakage
Low torque hand wheel
Typical Flow Curves for 1/4" Regulators
Specification
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11. 2257 - Self Vented Diaphragm Operated Pressure Regulator Valve
2258 - Non-Vented Lockable Pressure Regulator Valve
2259 - Self-Venting Lockable Cartridge Style Pressure Regulator Valve
Product Overview
Self vented diaphragm operated pressure
regulator valve 2257
¼" only - refer to manufacturer for details.
Non-vented lockable pressure regulator
valve 2258
Flanged ½" and ¾" only. Duplex stainless
steel. Refer to manufacturer for details.
Self venting lockable cartridge style
pressure regulator valve 2259
½" and ¾" only. Refer to manufacturer for
details.
.
Self Venting Regulator Valve 2250
Materials of Construction
Material Specification Grade
ST. STL (316) BS 970 316S11
Brass BS 2874 CZ 121
Features
Suitable for most gases and liquids
Balanced stem no turn down
Soft seat gives Ansi Class VI leakage
Low torque hand wheel
Typical flow characteristics
for ½" and ¾" regulators
Specification
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12. Applications
Series 5000 Series 2000
Offshore & Petrochemical Applications
Series
5000
Series
2000
Offshore Drilling Panels x
Offshore Well Close Down x x
Offshore Sub Sea x
Chemical Injection Unit Control x
Diving System – Breathing air supply to diving bells x
Anhydrous HCL Supply Valves x
Air Supply x x
Fire Fighting-Nitrogen or air supply valves (Damped Valves) x
Oil Pressure Regulation – R.O.V.’s – Diving Industry x
Gas Supply to operate Life Boat Motors in Oil Fire at Sea x
Hydrogen Supply Valves with Seal Monitoring Port x
Oxygen Supply Valves for Diving Industry x x
Hydrocarbon Gas x
Industrial Applications
Series
5000
Series
2000
Lube Oil (Compressor Expander) x
Water fountains and smoke making machines x
High Pressure Air x x
Rare Gases x x
H2 – Test Areas x
Engine Test Skid x
Cryogenic Gas x
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