Description
The Groth Models 14E and 14F Pilot-Operated Relief Valves are used to replace weight-loaded or spring-loaded valves in many applications, increasing efficiency and reducing evaporation losses. These valves offer several advantages compared to traditional valves. For example, process pressures can be closer to the set pressure than would be prudent and safe with a traditional valve. In addition, greater conservation is achieved due to minimal product loss, which in turn generates higher profits.
Easy, precise adjustments
Only the pilot needs to be adjusted
Lower profile and reduced weight compared to spring-operated models for high settings
Remote pilot sensing option allows the pilot to sense actual system pressure
Remote or manual blowdown option available
The main valve remains sealed until the set pressure is reached
Flow capacity available at 10% overpressure
Modulating action conserves product (available on most settings, consult factory)
Top entry allows the valve to be serviced without removing it from the mounting
Technical Details
• Size: 2” (50mm) through 10” (250mm)
• Body Material: Aluminum, Carbon Steel, Stainless Steel
• Pallet Material: Aluminum (Vacuum Only), Stainless Steel
• Diaphragm Material: Buna-N, Blue FKM or FEP
• Weight Material: Zinc-Plated Carbon Steel or Stainless Steel
• Bolting Class: 150# ASME, PN10, PN16
• Pressure Settings: 7.0 InWC (17.5mbar), [8.0 inWC (19.9 mbar) for 2” sizes] to 15 psig (1034 mbar)
• Vacuum Settings: 0.80 InWC (2.0 mbar) to 1.5 psig (103mbar)
• Superior tightness, meeting API-2000 and ISO 4126 leak requirements
• PED and ATEX Certified
Pilot exhaust piped to discharge header
Field test connection
Manual blowdown
Remote sense pickup
Pilot supply filter