This corrosion-resistant valve is used as a bypass valve and is also a used for back pressure control applications such as maintaining constant pump discharge pressures, limiting pump overpressure and bypassing excessive pressures from various types of process equipment, and wherever a constant pressure must be maintained in a process or piping system. This back pressure valve can be used for corrosive or mildly corrosive fluids, only when the proper materials are selected and applied. When liquids or gases contain debris or other solid matter which might cause internal clogging or improper operation of the back pressure/bypass valve, a filter or strainer with a fine wire mesh (at least a #20 mesh) should be installed before the inlet of the valve. High-pressure in-line strainer fittings or simplex basket strainers can be purchased from Straval.
Features & Benefits
- Pressure-containing back pressure regulator parts made from solid bar stock materials — unlike castings which have wall thickness variations.
- Valve body: Standard materials are stainless steel and brass. Special alloys (e.g. Monel, titanium, and Hastelloy) also available.
- Piston valve/poppet: Stainless steel is standard in bypass valve and back pressure regulator valve construction. Hardened stainless steel can be used for very high pressures.
- Seal: Standard bypass valve seal elastomer is Viton for stainless steel valves and Buna for brass valves. Special elastomers (EPDM, Teflon, Kalrez, and Parfluor) are also available.
- Right-angle valve porting (bottom inlet, side outlet) is the standard piping arrangement.