External gear pump

1. 1- HOW EXTERNAL GEAR PUMPS WORK
2-MATERIALS OF CONSTRUCTION
3-ORDERING CODE
4- ADVANTAGES
5-DISADVANTAGES
6-APPLICATIONS
External Gear Pump

2. How External Gear Pumps Work

3. Materials of Construction

4. Ordering code

5. Advantages
•High speed
•High pressure
•No overhung bearing loads
•Relatively quiet operation
•Design accommodates wide variety of materials

6. Disadvantages
•Four bushings in liquid area
•No solids allowed
•Fixed End Clearances

7. Applications
•Various fuel oils and lube oils
•Chemical additive and polymer metering
•Chemical mixing and blending (double
pump)
•Industrial and mobile hydraulic applications
(log splitters, lifts, etc.)
•Acids and caustic (stainless steel or
composite construction)
•Low volume transfer or application

8. pressure relief valve
• A pressure relief valve is a safety device designed to protect a pressurized vessel or
system during an overpressure event.
• An overpressure event refers to any condition which would
cause pressure in a vessel or system to increase beyond the
specified design pressure.
• The pressure relief valve must open at a predetermined
set pressure, flow a rated capacity
at a specified overpressure, and close when the system
pressure has returned to a safe
level.