Downstream Pressure Regulating Valve

Downstream Pressure Regulating Valve

Pneucon Valves Private Limited

Pneucon Valves Private Limited offers Downstream Pressure Regulating Valve. 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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  • 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.

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