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Pilot Operated Relief Valves

Pilot Operated Relief Valves

3 Item(s)

  1. 1400 Pilot Operated Relief Valve w/Vacuum Breaker

    1400 Pilot Operated Relief Valve w/Vacuum Breaker

    The Groth 1400 Pilot-Operated Relief Valve is used to replace weight-loaded or spring loaded valves in many applications to increase efficiency and reduce evaporation losses. Several advantages are obtained over the traditional type. For example, the process pressures may be closer to the set pressure than would be considered prudent and safe with the traditional valve. Additionally, greater conservation is obtained due to minimum product loss which in turn provides increased profits.
  2. Model 1500 Air Operated Pressure/Vacuum Relief Valves

    Model 1500 Air Operated Pressure/Vacuum Relief Valves

    The Groth Model 1500 Air Operated Pressure/Vacuum Relief Valve is used to replace weight-loaded, spring-loaded, and pilot-operated valves in severe applications where polymerization and crystallization may take place and plug as well as corrode the control orifices. The air-operated valve increases valve efficiency and reduces evaporation losses. The pressure switch coupled with a solenoid valve and using plant instrument air instead of corrosive product vapor provides a bubble tight seal in the valve. Additionally, the use of clean air greatly reduces maintenance time when compared with the pilot-operated valve. By using the air-operated valve, remote sensing is provided by the pressure switch. This valve provides greater conservation due to minimum product loss which in turn adds to the profits at the bottom line.
  3. Model 1660A Pilot Operated Relief Valve

    Model 1660A Pilot Operated Relief Valve

    The Groth Model 1660A Pilot-Operated Relief Valve with Pipe-Away feature is used on liquid storage tanks and other process vessels or systems to prevent structural damage due to excess internal pressure or vacuum. The pilot-operated relief valve has two principal advantages over standard types of relief valves: 1) it is bubble tight to set pressure, and 2) it is fully open at less than 10% above set pressure. These characteristics permit an operating pressure nearer to the maximum allowable working pressure of the tank. High operating pressures reduce evaporation and total venting volume, thereby reducing product loss and cost of processing emissions.

3 Item(s)