Pilot Operated.

  • The Model 1049 offers the best pilot-operated vent technology on the market today. The unit allows for bubble-tight seat leakage until the pilot starts to exhaust. At that time, the vent starts to open and is fully open at 10% overpressure. Unlike non-pilot operated units that require substantial overpressure in order to obtain full lift. On Model 1049, the blowdown is limited, and the valve reseats at the set point, where the non-pilot-operated units will go below the set point in order to reseat. 
    Pilot Operated Vent Valve
  • The Pilot Operated Model 5500 conservation pressure vent with pipe-away is intended for use where pressure relief is required and the relieving vapors must be piped away and not emitted into the atmosphere. May also be used for in-line vacuum relief. 
    Pressure Vent w/ Pipe-away Connection
  • The Model 5100 end-of-line conservation breather vent is intended for use on atmospheric and low-pressure storage tanks where pressure and vacuum relief is required. 
    End-Of-Line Relief Vent
  • The Model 5400 is designed for use on atmospheric and low-pressure tanks to reduce environmental emissions and product losses, when operating close to the set point. 
    Pressure Only Relief Vent
  • The Pilot Operated Model 5200 vent provides pressure and vacuum relief in applications that require vapors to be piped away. 
    Pilot Operated Vent with Pipe-Away