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Pressure Relief Valves and Thermal Relief Valves

PRESSURE RELIEF VALVES

The pressure relief valve is used to release pressure when a PSI threshold is exceeded. Pressure relief valves are usually installed on the high pressure side of a pump and set 300-400 PSI above the unloader setting, protecting against unloader failure.
Name Part No. Description Quantity Price Order
Pressure Relief Valve
GEN-32472 *General Pump
*1/4" Male Inlet
*6 GPM at 6000 PSI
*195° F
*Outlet: Side with 1/4" hose barb relief

(Old PWP # ADI-114)
$18.95
Pressure Relief Valve
GEN-32473 *General Pump
*3/8" Male Inlet
*6 GPM at 6000 PSI
*195° F
*Outlet: Side with 1/4" hose barb relief

(Old PWP # ADI-115)
$18.95
Pressure Relief Valve

Product Brochure
GEN-32474 *General Pump
*1/2" Male Inlet
*6 GPM at 6000 PSI
*195° F
*Outlet: Side with 1/4" hose barb relief
General Pump Part Number 100722

(Old PWP # ADI-116)
$18.95
Pressure Relief Valve
GEN-32476 General Pump
*3/8" Male Inlet
*6 GPM flow rate
*6000 PSI maximum pressure
*Materials: Brass, SS, Thermoplastic, Buna-N
*One model fits all pressures - no springs to change
*Less "whistling" and chatter than competing brands
*Highly accurate over full range of pressures
*Fits any brand pump
*Designed and made in the USA

(Old PWP # ADI-126)
$16.95
Giant Pump Pressure Relief Valve

Product Brochure
GNT-34184 Giant Pump
*1/4" Male Inlet
*1200 PSI maximum pressure
*10 GPM flow rate
*160 F
*Adjustable
*Made in America
*Giant Part Number 22550A

(Old PWP # G-67070)
$12.95
Giant Pump Pressure Relief Valve

Product Brochure
GNT-34185 Giant Pump
*3/8" Male Inlet
*1200 PSI maximum pressure
*10 GPM flow rate
*160 F
*Adjustable
*Made in America
Giant Part Number 22530A

(Old PWP # G-67071)
$12.95
Giant Pump Pressure Relief Valve

Product Brochure
GNT-34186 Giant Pump
*1/4" Male Inlet
*2400 PSI maximum pressure
*10 GPM flow rate
*160 F
*Adjustable
*Made in America
Giant Part Number 22560A

(Old PWP # G-67072)
$12.95
Giant Pump Pressure Relief Valve

Product Brochure
GNT-34187 Giant Pump
*3/8" Male Inlet
*2400 PSI maximum pressure
*10 GPM flow rate
*160 F
*Adjustable
*Made in America
Giant Part Number 22531A

(Old PWP # G-67073)
$12.95
Giant Pump Pressure Relief Valve

Product Brochure
GNT-34188 Giant Pump
*1/4" Male Inlet
*3600 PSI maximum pressure
*10 GPM flow rate
*160 F
*Adjustable
*Made in America
Giant Part Number 22565A

(Old PWP # G-67074)
$12.95
Giant Pump Pressure Relief Valve

Product Brochure
GNT-34189 Giant Pump
*3/8" Male Inlet
*3600 PSI maximum pressure
*10 GPM flow rate
*160 F
*Adjustable
*Made in America
Giant Part Number 22532A

(Old PWP # G-67075)
$12.95
Giant Pump Pressure Relief Valve

Product Brochure
GNT-34702 Giant Pump
*1/4" Male Inlet
*5000 PSI maximum pressure
*10 GPM flow rate
*160 F
*Adjustable
*Made in America
Giant Part Number 22568

(Old PWP # G-76076)
$12.95
Giant Pump Pressure Relief Valve

Product Brochure
GNT-34190 Giant Pump
*3/8" Male Inlet
*5000 PSI maximum pressure
*10 GPM flow rate
*160 F
*Adjustable
*Made in America
Giant Part Number 22533A

(Old PWP # G-67077)
$12.95


THERMAL RELIEF VALVES

The thermal relief valve is used to protect the pump from overheating (pump water seals damage). If the unloader is in bypass for extended amounts of time the water temperature increases. Once the thermal relief valve rated temperature is exceeded, circulating water is discharged and new cooler water from the water inlet is allowed in. Thermal relief valves are a cheap way to protect a pump against thermal damage.

Name Part No. Description Quantity Price Order
Giant Pump Thermal Relief Valve
Product Info
GNT-34182 1/4" MNPT Thermal Relief Valve
8 GPM
90 PSI
140 F
Giant Pump Part # 23420B

(Old PWP # G-67059)
$7.50
Giant Pump Thermal Relief Valve
Product Info
GNT-34183 3/8" MNPT Thermal Relief Valve
8 GPM
90 PSI
140 F
Giant Pump Part # 23421B

(Old PWP # G-67060)
$7.50
Giant Pump Thermal Relief Valve
Product Info
GNT-34180 1/2" MNPT Thermal Relief Valve
8 GPM
90 PSI
140 F
Giant Pump Part # 23422B
Replaces Giant Part # 23422A
Replaces Giant Part #23422-N

(Old PWP # G-67057)
$7.50
General Pump Thermal Relief Valve

Product Info
GEN-33661 *1/4" MNPT x 1/4" Plastic Hose Barb
*145 F
*125 PSI maximum pressure
*Protects pump from overheating
*Smallest thermal valve on the market
*Most durable and repeatable design available
*Cap design allows flow to be diverted as desired
*Can be mounted in pump manifold, inlet water supply, or bypass loop plumbing
General Pump Part Number 100556

(Old PWP # AWA-47)
$10.00
General Pump Thermal Relief Valve

Product Info
GEN-33662 *3/8" MNPT x 1/4" Plastic Hose Barb
*145 F
*125 PSI maximum pressure
*Protects pump from overheating
*Smallest thermal valve on the market
*Most durable and repeatable design available
*Cap design allows flow to be diverted as desired
*Can be mounted in pump manifold, inlet water supply, or bypass loop plumbing
General Pump Part Number 100557

(Old PWP # AWA-48)
$10.00
General Pump Thermal Relief Valve

Product Info
GEN-33663 *1/2" MNPT x 1/4" Plastic Hose Barb
*145 F
*125 PSI maximum pressure
*Protects pump from overheating
*Smallest thermal valve on the market
*Most durable and repeatable design available
*Cap design allows flow to be diverted as desired
*Can be mounted in pump manifold, inlet water supply, or bypass loop plumbing
General Pump Part Number 100558

(Old PWP # AWA-49)
$10.00
General Pump Thermal Relief Valve

Product Info
GEN-33664 *3/8" M x 3/8" Brass Hose Barb
*190 F
*Protects pump from overheating
*Smallest thermal valve on the market
*Most durable and repeatable design available
*Cap design allows flow to be diverted as desired
*Can be mounted in pump manifold, inlet water supply, or bypass loop plumbing
General Pump Part Number 100679

(Old PWP # AWA-50)
$12.95
General Pump Thermal Relief Valve

Product Info
GEN-33665 *1/2" M x 1/2" Brass Hose Barb
*190 F
*Protects pump from overheating
*Smallest thermal valve on the market
*Most durable and repeatable design available
*Cap design allows flow to be diverted as desired
*Can be mounted in pump manifold, inlet water supply, or bypass loop plumbing
General Pump Part Number 100680

(Old PWP # AWA-51)
$12.00
CAT Pump Thermal Relief Valve
CAT-31451 *1/2" Male Inlet
*145 F
*25 GPM flow rate
*125 PSI maximum pressure
*Constructed of brass
*Automatically seats during unloader/regulator pressure spikes to prevent fluid bleed

(Old PWP # AWA-43)
$39.95
CAT Pump Thermal Relief Valve
CAT-31452 *3/8" Male Inlet
*165 F
*25 GPM flow rate
*125 PSI maximum pressure
*Constructed of brass
*Automatically seats during unloader/regulator pressure spikes to prevent fluid bleed

(Old PWP # AWA-44)
$49.95
CAT Pump Thermal Relief Valve
CAT-31453 *1/2" MNPT Inlet
*165 F
*25 GPM flow rate
*125 PSI maximum pressure
*Constructed of brass
*Automatically seats during unloader/regulator pressure spikes to prevent fluid bleed

(Old PWP # AWA-45)
$49.95

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