Models 230, 330, 330S, 333S - Relief Valves


ASME Section VIII, Gas, 'UV' National Board Certified

Model Descriptions

  • Model 230: 1/4-inch Male NPT - 300/1500 psig.
  • Model 330: 1/4-inch Male NPT - 1000/5500 psig. Aluminum housing, SS trim (seat and disc with synthetic insert). Sidewall discharge.
  • Model 330S: Same as Model 330 except SS body suitable for 2000/6500 psig.
  • Model 333S: Same as 330S except 1/2-inch Female NPT side outlet. Pressure-tight cap.

Pressure and Temperature Limits

  • Model 230: 300 to 1500 psig -20° to 185°F
  • Model 330: 1000 to 5500 psig -20° to 185°F
  • Model 330S: 2000 to 6500 psig -20° to 185°F
  • Model 333S: 2000 to 6500 psig -20° to 185°F

Applications

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

Options
No Options Available

Features and Benefits

  • Lightweight aluminum construction. Resistant to environmental and internal corrosion.
  • Aluminum parts are anodized for corrosion resistance.
  • Model 230 is direct spring-loaded design with synthetic disc insert.
  • Model 330 series incorporates a differential mechanism which 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 a maximum as inlet pressure approaches the opening pressure.
 

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