Reducing Valves 1PD20

Product catalog summary

Overview: The document provides technical specifications and operational details for the 1PD Series Pressure Reducing Valve, which is direct acting with reverse relief. It is designed to provide an adjustable regulated pressure lower than the supply pressure, suitable for applications requiring multiple operating pressures from a single pump.

Specifications:

Rated Flow: 30 litres/min (8 US GPM)
Max Inlet Pressure: 350 bar (5000 psi)
Max Differential Pressure: 210 bar (3000 psi)
Operating Temperature: -20°C to +90°C
Body Material: Standard aluminium, with a steel option available for applications above 210 bar
Seal Kit: SK339 (Nitrile), SK339V (Viton)
Filtration Level: BS5540/4 Class 18/13 (25 micron nominal)

Operation: The valve is normally open and throttles or closes to maintain constant pressure in the regulated line. It also acts as a relief valve, relieving pressure from the regulated line to the tank if shock or surge pressures occur.

Features:

Hardened steel working parts for long life and reliability
Sliding spool type design
External surfaces are zinc plated for corrosion resistance

Adjustment and Installation:

Plunger adjustment range with torque cartridge into cavity at 60 Nm (44 lbs ft)
Unrestricted mounting position
Leakage is nominally 35 millilitres/min

Ordering Information: The document provides a detailed ordering code example, specifying options for cartridge only, cartridge and body, or cartridge, body, and check. Adjustment means include leakproof screw adjustment, handknob adjustment, plunger actuated, and tamperproof cap. Port sizes and seal options are also specified.

Graphical Data: The document includes graphs illustrating the relationship between plunger stroke, pressure, and plunger force, as well as pressure regulating and relieving characteristics in relation to flow rates.

Catalog excerpts

(WITH REVERSE FLOW CHECK) > Body ONLY part numbers Sub-assembly part numbers BSP, aluminium SAE, aluminium BSP, steel SAE, steel BSP, aluminium SAE, aluminium 3/8B13837 3/8ԔB106451/2B7784 3/8ԔB13838 3/8BXP21795-3W-S 3/8ԔBXP21795-6T-S 1/2BXP21795-8T-S 1/2ԔB11805 BSP, steel SAE, steel 3/8BXP21795-3W-S-377 1/2ԔBXP21795-8T-S-377 132 22.057.0 10.060.0 3 3 43.0 2 151.0 MAX 43.080.0 136.0 MAX 2 2 HOLES 9.0 THRO' 20.595.0 21.0 1 1 15.931.7 10.043.5 15.9 63.5 15.9 10.038.0 15.931.7 2 HOLES 10.5 THRO' 76.2 Where measurements are critical request certified drawings 1PD20 = Cartridge Only S =Nitrile (For...

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Reducing Valves 1PD20

Reducing Valves 1PD20

Catalog excerpts

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