Models 230, 330, 330S, 333S

Model Descriptions:

ASME Section VIII, Gas, “UV” National Board Certified. PED Certified for non-hazardous gas.

• Model 230: ¼” male NPT – 300/1500 PSIG.
• Model 330: ¼” male NPT – 1000/5500 PSIG.  Aluminum housing, stainless steel (SS) trim (seat and disc with synthetic insert). Sidewall discharge.
• Model 330S: Same as Model 330 except SS body suitable for 1000/6500 PSIG.
• Model 333S: Same as Model 330S except ½” female NPT side outlet.  Pressure-tight cap.

Features:

• Lightweight aluminum construction.  Resistant to environmental and internal corrosion.
• Model 230 (non-code) has direct spring-loaded design with synthetic disc insert.
• Model 330 series incorporates a differential mechanism that maintains a predetermined seat-contact load.
• The full spring load is never imparted to synthetic disc insert (Models 330, 330S and 333S only).
• Seat tightness increases to maximum as inlet pressure approaches the opening pressure.
• Each Kunkle valve is tested and inspected for pressure setting and leakage.

Applications:

• Multi-stage high-pressure compressors, intercoolers and aftercoolers.
• High-pressure receivers and storage bottles.
• Thermal expansion relief.

Pressure and Temperature Limits:

• Model 230
• 300 to 1500 PSIG [20.6 to 103.4 barg]
• -20° to 185°F [-28.9° to 85°C]
• Model 330
• 1000 to 5500 PSIG [68.9 to 379.2 barg]
• -20°to 185°F [28.9° to 85°C]
• Model 330S
• 1000 to 6500 PSIG [68.9 to 448.1 barg]
• -20°to 185°F [28.9° to 85°C]
• Model 333S
• 1000 to 6500 PSIG [68.9 to 448.1 barg]
• -20°to 185°F [28.9° to 85°C]

Please refer to the Kunkle Catalog or Contact for additional information.