Valve Series

Series 600
Downstream Pressure Regulating Valves

Downstream Pressure regulating valves are self contained, Self Operated control devices, which use energy from the controlled system to operate and regulate pressures.

Valve Solutions manufactures a variety of pressure reducing regulators to manage downstream system pressures in low, medium, high flow applications, model features a diaphragm type, piston type or combination of both to suit different applications.

A pressure reducing regulator maintains a desired reduced outlet pressure while providing the required fluid flow to satisfy a variable downstream demand. The valve at which the reduced pressure is maintained is the outlet pressure setting of the regulator.


Design Code ASME B16-34
Valve Size 15 to 600 mm (1/2" to 24")
Valve Type Direct or Pilot Operated
Rating ANSI 150 to 300 Higher on request
End Connection Flanged up to 6”, Screwed up to 2”
Body Material Carbon steel, Chrome-moly steel, Stainless steel, Monel, Alloy 20, Hastelloy B/C, Duplex stainless steel, Aluminium bronze
Bonnet Standard up to 400°C Normalising between 250°C to 500°C Extended cold service -20°C to -100°C
Trim Material Stainless steel, Duplex stainless steel, 13% Chrome steel, Monel, Hastelloy B/C, Stellite 
Gland Packing PTFE Chevrons, Graphite, Low emission
Seat Leakage As per ANSI / FCI 70-2-2006 Class III, IV, V and VI
Diaphragm Nitrile / Neoprene (nylon reinforced), Natural Rubber, EDPM, Viton, Teflon


Design Features

  • Reduces higher inlet pressure to a constant lower outlet pressure. 
  • Outlet pressure is accurate over a wide range of flows. 
  • Pilot operated, main valve is not subject to pressure fall off characteristic of direct-acting PRVs. 
  • Outlet pressure is adjustable over complete range of control spring. 
  • Range of body and diaphragm material combinations to meet the majority of requirements.
  • Simple economic design.
  • Operates automatically off line pressure.
  • Heavy duty nylon reinforced diaphragm.
  • Diaphragm assembly guided top and bottom.
  • Throttling seat retainer for flow and pressure stability.
  • Easily maintained without removal from the line.
  • Pressure adjustment by single adjusting screw.
  • Replaceable seat ring. 


Recent Clients

Contact Us

For more information on any of our products and services, please call:

+44 (0) 1274 531992

You can email:

or visit:
Valve Solutions Ltd, Unit 10,
Acorn Business Park, Baildon
Shipley BD17 7SW