The model PV200 In-Line Pressure Vacuum Relief Valve maintains a tight seal until system pressure or vacuum exceed the set pressure of the valve. When overpressure occurs the weighted pallet lifts, breaking the seal between the seat and pallet, allowing vapors to pass through the valve orifice and relieving the pressure or vacuum buildup. The valve reseals upon relief and remains sealed.

Features:

· Dual guide system provides for smoother valve stroke, less flutter and valve wear.

· Exceeds the most stringent standards for allowable leakage (far less than API2000 standard) and provides excellent set point accuracy (+/-3%).

· 10% overpressure to full lift.

· In-situ replacement for valve pallet and seat assembly

· Available in ANSI, DIN and HG/T20592~20635-2009 flanges