Kunkle Model 230/330/330S/333S Safety Relief Valves
Relief valves for air and gas services with models to ASME section VIII, gas “UV,” National Board certified and PED certified for non-hazardous gas
Product Features
- Lightweight aluminum construction is resistant to environmental and internal corrosion
- Repetitively consistent opening pressure
- Smooth relief action
- Positive reseating with minimal pressure drop
- Soft seat option provides repeatable leak-tight performance, allows reduced maintenance costs, multiple cycles with tight shut-off and high seating integrity (Models 330, 330S, and 333S)
- Model 230 (non-code) is direct spring-loaded design with synthetic disc insert
- Model 330 series’ differential mechanism maintains a predetermined seat contact load
- Full spring load is never imparted so synthetic disc insert (Models 330, 330S, and 333S)
- Seat tightness increases as inlet pressure approaches set (opening) pressure
- Each valve tested and inspected for pressure setting and leakage
Specifications
- Connections: Threaded NPT or SAE
- Temperature range: -20 to 185°F (-29 to 85°C)
- Pressure ranges: Model 230: 300 to 1500 psig (20.7 to 103.4 barg); Model 330: 1000 to 5500 psig (69 to 379.3 barg); Models 330S/333S: 1000 to 7500 psig (69 to 517.1 barg)
- Max back pressure (Model 333S): 100 psig (16.9 barg)
- Codes: ASME VIII and PED
Applications
These valves are suitable for use on multi-stage high pressure compressors intercoolers and after coolers, on high pressure receivers and storage bottles, for thermal expansion relief and on breathing air pac and SCUBA recharge compressors.
