Application
The 550 Series are used on any installation where the pressure upstream must be kept in a preset range. These valves can be used as a pressure relief valve, custody transfer dump valve to hold a certain back pressure or a separator back pressure valve on the gas or liquid side.
Specifications
| Size: | 2″ 3″ 4″ |
| Working Pressure: Diaphragm Operated: Piston Operated: Pilot Operated: | 100 psig 90 psig 50 psig 200 psig 150 psig N/A 350 psig 300 psig 200 psig |
| Temperature: | -20ºF to + 180ºF; available to +240ºF |
| Topworks: | Pressed steel housing with nylon reinforced nitrile diaphragm; 50 psig maximum supply pressure. |
| Cv Factor: | 45 80 111 |
| Trim: Seat: Plug: | Integral in the valve body or removable stainless steel. Steel with molded nitrile standard; optional fabricated acetal, polyurethane or TFE inserts. |
| Materials: Body: Stem: Packing: | Ductile ASTM A395 Stainless steel Poly Pak and/or o-rings |