Pilot Operated Pressure Relief Valves Datasheets

In the mid-1940s, a new relief valve actuated with a pilot rather than a spring set a new standard for pressure control. The valve, manufactured over the years by companies like Garrett, USI, Axelson, and NUFLO, is now manufactured and sold by Cameron's Measurement Systems division. The NuFlo... [See More]

• Actuation: Pilot 
• Maximum Pressure: 6000.00 psi

• Valve Size: 1.00 to 8.00 inch
• Connection Description: BoltFlange 

Modular stack valves are designed to install between the valve and its mounting surface. This will eliminate plumbing connections and space requirements. Continental Hydraulics has a full range including check, flow control, relief, reducing, sequencing, shuttle and counterbalance valves. [See More]

• Actuation: Pilot 
• Controlled Pressure Range: 50.00 to 3000.00 psi

• Maximum Pressure: 5000.00 psi
• Connection Description: NFPA Size D03 

Dynex VH Series pressure controls are ideal for use in high-pressure and high-shock systems. These pilot-operated poppet style valves provide fast response to circuit conditions.Relief valves regulate pressure and provide circuit protection at pressures to 15,000 psi. Unloading valves operate at... [See More]

• Actuation: Electric; Pilot; Pneumatic; Electric, Air, or Hydraulic Vent Option 
• Maximum Pressure: 10000.00 psi

• Valve Size: 0.75 inch
• Media: Hydraulic 

These pressure limiting valves are electrically remote controlled and rule the hydraulic pressure within the system. This enables arbitrary control of the maximum pressure in the circuit there by protecting it depending on the momentarily required condition. These valves are either directly actuated... [See More]

• Actuation: Manual (optional feature); Pilot (optional feature) 
• Connection Description: Threaded; G 1/2, 3/4, 1 

• Maximum Pressure: 1885.49 to 5076.32 psi
• Primary Material: Steel 

Features. Maximum pressure setting up to 150 Bar, 2175 PSI. Three pressure ranges available for more accurate pressure control. Partial reverse flow capability. Hardened working parts for maximum durability. Adjustable and tamperproof versions available. All external parts zinc plated [See More]

• Actuation: Pilot 
• Connection Description: Threaded 

• Maximum Pressure: 2175.00 psi
• Primary Material: Steel 

Pilot Operated Relief Valve with Free Reverse Check This valve will relieve pressure in one direction acting as a normal relief, while allowing a free flow in the opposite direction Features High flow capacity Virtually leak free, can be used for load holding applications Compact space saving design... [See More]

• Actuation: Pilot 
• Media: Hydraulic 

• Primary Material: Steel 
• Features: Cartridge 

Excess pressure valve for liquids, vapors. and gases. Used to control the upstream pressure p1 to the set. point adjusted at the pilot valve. Equipped with a pilot valve suitable for the process medium;. standard version is equipped with Type 44-6 B Excess Pressure. Valve. The differential pressure... [See More]

• Actuation: Pilot 
• Maximum Pressure: 232.06 to 580.15 psi

• Valve Size: 4.92 to 15.75 inch
• Controlled Pressure Range: 11.60 to 406.11 psi

The 20-400 series unloading valves are available in four operating pressures from 6,000 psig up to 30,000 psig. used to automatically release hydraulic pressure replacing the standard manual shut off type release valve found in most high pressure systems. The unloading valve is controlled by a pilot... [See More]

• Actuation: Pilot 
• Maximum Pressure: 6000.00 psi

• Valve Size: 1.00 inch
• Controlled Pressure Range: 6000.00 psi

VALVE DESCRIPTION. Provides temporary relief protection to a water system by attaching directly to a fire hydrant via 2-1/2" FNST swivel on the inlet of the Watts 1116FH Relief Valve. VALVE APPLICATION. In municipal & rural water systems, elevated storage tanks provide outlets for system... [See More]

• Actuation: Pilot 
• Maximum Pressure: 400.00 psi

• Valve Size: 2.00 inch
• Controlled Pressure Range: 20.00 to 175.00 psi