DOWNSTREAM PRESSURE REGULATING VALVE

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DOWNSTREAM PRESSURE REGULATING VALVE-SERIES 600

Downstream Pressure Regulating Valve is self contained, self Operated control device, which automatically reduce a higher inlet pressure to a steady lower downstream pressure regardless of changing flow rate and varying inlet pressure. It utilizes energy from the controlled system. The regulator operates on the simple principal of force balance. A Downward opening force is exerted by the actuator spring, which is balanced by the upward force exerted by the controlled outlet pressure acting below the diaphragm. Any drop in controlled outlet Pressure due to consumption of Fluid, disturbs the force balance and due to spring force diaphragm and stem move down pushing the valve plug away from seat. This results in the increased flow. The pressure reducing regulators are manufactured in a variety to manage downstream system pressures in low, medium, high flow application; model features a diaphragm/Piston type or combination of both to suit different applications. These regulators find applications throughout many industries including the Oil & Gas, Pulp & Paper, Power Generation and chemicals processing industries etc.
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DESIGN ASME B16.34
Type 1) Direct Operated ( Type 610 )
2) Steam PRV with Condensate Chamber ( Type620)
3)Steam PRV with Multi Stage Pressure Reduction Trim & CondensateChamber(Type 625)
4) Direct Operated with Balanced Design Valve (Type 630)
5) Pilot Operated ( Type 640 )
Body Form Globe.
Size 15 to 300 mm (1/2” to 12”)
Rating 150# and 300# ANSI.
Higher Rating on Request.
End Connection Flanged – 15mm to 300mm (1/2” to 12”)
Screwed – 15mm to 50mm (1/2” to 2”
Body Material A216 Gr. WCB, A351CF8, CF8M Other on Request
Trim Material Stainless Steel, Alloy20, Monel, Hastelloy B/C, Stellite Hard Facing.
Max.Temp As per the diaphragm limitations.
Seat Leakage As per FCI-70.02 (ANSI B 16.104) Class IV, V and VI
(STANDARD LEAKAGE RATES)
Metal to Soft Seating – Bubble tight
(Zero Leakage)
  • Models are available for Steam, air, gas or liquid service with internal or external sensing.
  • Reduces higher inlet Pressure to a constant lower outlet pressure.
  • Moulded sensing diaphragm provide a good proportional band and registration of outlet pressure on the diaphragm allows excellent control sensitivity.
  • Glandless Construction where positive zero gland leakage is required, the design scores over conventional solutions such as Bellow seal etc., as the gland itself is eliminated and hence there can’t be gland leakage. Glandless construction eliminates hystersis, resulting in improvement of sensitivity and repeatability of the valve.
  • Outlet pressure is accurate over wide range of flow.
  • Pilot-Operated main valve is not subjected to pressure fall off Characteristic of direct-acting PRV’s.
  • Outlet pressure is adjustable over complete range of control spring.
  • Operates automatically off line pressure.
  • Heavy-duty, nylon-reinforced diaphragm.
  • Round-shaped, soft seat seal provide drip-tight class VI closure.
  • 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.
  • Range of Body & Diaphragm material combinations to meet majority of requirements.
  • IBR certification in From III C available.
  • Designed ruggedly to withstand shocks.
  • Simple and economic design.
  • Produced with Quality Systems accredited to ISO 9001: 2008 by Bureau Veritas.
  • Full material certification available for all major component Parts.
  • Full guarantee on design and Performance.
  • All testing performed to the requirements of ANSI B16.34.