FITOK relief valves OPEN when system pressure reaches the set pressure and CLOSE when system pressure falls below the set pressure.
Attention
- FITOK proportional relief valves should never be used as safety relief devices as defined in the ASME Boiler and Pressure Vessel Code.
- FITOK proportional relief valves are not “Safety Accessories” as defined in the Pressure Equipment Directive 97/23/EC.
| Proportional Relief Valves Interchangeability(functionality) | ||||
| Series | RV | RL-7 | RL-8 | RM |
| Corresponding brand and series | Swagelok R3A Series | Swagelok RL3 Series | Swagelok RL4 Series | Swagelok R4 Series |
Features
- Set pressure:
RV series: 7 color-coded springs available for a wide range of set pressure, 50 to 6000 psig @ 70°F (3.4 to 414 bar @ 20°C). - Maximum outlet pressure:
RV series: 1500 psig (103 bar). - Orifice size:
RV series: 0.14″ (3.6 mm) - Back pressure:
Back pressure is the pressure of the outlet of valves. It increases the set pressure of proportional relief valves. RV and RM series: Balanced stem design to eliminate the effect of system back pressure. - Working temperature: -10°F to 300°F (-23°C to 148°C).
- Variety of end connections.
- Liquid or gas service.
- Adjustable bonnet cap and adjustable set pressure.
- Lead seal through lock wire holes to lock proportional relief valve so as to secure a set pressure effectively.
- Variety of seal materials.
- Label identifies the set pressure range.