Kunkle Valve Models 230/330/330S/333S Safety Relief Valves

Safety Relief Valve,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.

Model Descriptions:

Model 230:
1/4" Male NPT – 300/1500 psig. Aluminum housing with SS trim.
Model 330:
1/4" Male NPT – 1000/5500 psig. Aluminum housing, SS trim. Sidewall discharge.
Model 330S:
Same as Model 330 except SS body suitable for 1000/6500 psig.
Model 333S:
Same as Model 330S except 1/2" Female NPT side outlet. Pressure-tight cap.

Benefits & Features:
1.Improved Soft Seat option – provides repeatable leak-tight performance before and after each relief cycle.

2.Allows for reduced maintenance costs, multiple cycles with tight shut-off, and improved seating integrity
(Models 330, 330S and 333S).

3.Lightweight aluminum construction. Resistant to environmental and internal corrosion.

4.Model 230 (non-code) is direct spring-loaded design with synthetic disc insert.

5.Model 330 series incorporates a differential mechanism which maintains a predetermined seatcontact load.

7.The full spring load is never imparted to synthetic disc insert (Models 330, 330S, and 333S only).

8.Seat tightness increases as inlet pressure approaches set (opening) pressure.

9.Each Kunkle valve is tested and inspected for pressure setting and leakage.