Refine
FILTERSClear All

Coded label color

Cracking Pressure

Material - Seals

Operating Temperature

Special Cleaning

Click Image to Zoom
Relief Valve - Angle - RH4Relief Valve - Angle - RH4

Relief Valve - Angle - RH4

Parker Angle Relief Valve - RH4 Series

Email this page to a friend


Showing 1 - 20 of 37  
Part # Availability Price/UOM
++ 4M4A-RH4A-BNT-SS Out of Stock - Lead Time Required $261.70
++ 4M4A-RH4A-BNT-SS-K1 Out of Stock - Lead Time Required $281.10
++ 4M4A-RH4A-BNT-SS-K2 Out of Stock - Lead Time Required $281.10
++ 4M4A-RH4A-BNT-SS-K5 Out of Stock - Lead Time Required $281.10
++ 4M4A-RH4A-BNT-SS-K6 Out of Stock - Lead Time Required $281.10
++ 4M4A-RH4A-BNT-SS-K7 Out of Stock - Lead Time Required $281.10
++ 4M4A-RH4A-BNT-SS-K8 Out of Stock - Lead Time Required $281.10
++ 4M4A-RH4A-EPRT-SS Out of Stock - Lead Time Required $261.70
++ 4M4A-RH4A-EPRT-SS-K1 Out of Stock - Lead Time Required $281.10
++ 4M4A-RH4A-EPRT-SS-K2 Out of Stock - Lead Time Required $281.10
++ 4M4A-RH4A-EPRT-SS-K3 Out of Stock - Lead Time Required $281.10
4M4A-RH4A-EPRT-SS-K6 N/A Call to Order
++ 4M4A-RH4A-EPRT-SS-K7 Out of Stock - Lead Time Required $281.10
4M4A-RH4A-EPRT-SS-K8 N/A Call to Order
++ 4M4A-RH4A-KZT-SS Out of Stock - Lead Time Required $357.42
++ 4M4A-RH4A-KZT-SS-K1 Out of Stock - Lead Time Required $378.39
++ 4M4A-RH4A-KZT-SS-K4 Out of Stock - Lead Time Required $378.39
4M4A-RH4A-NET-SS-K1 N/A Call to Order
4M4A-RH4A-NET-SS-K2 N/A Call to Order
++ 4M4A-RH4A-NET-SS-K3 Out of Stock - Lead Time Required $281.10
UOM Inlet port 1 Outlet port 2 Material - Seals Cracking pressure Material Country of Origin (COO) Harmonized Tariff (HTS)
EA 1/4" male NPT 1/4" A-LOK compression Nitrile rubber Valve without spring kit 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Nitrile rubber 50-350 psig (3.4-24.1 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Nitrile rubber 350-750 psig (24.1-51.7 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Nitrile rubber 2250-3000 psig (155.1-206.8 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Nitrile rubber 3000-4000 psig (206.8-275.8 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Nitrile rubber 4000-5000 psig (275.8-344.7 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Nitrile rubber 5000-6000 psig (344.7-413.7 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Ethylene propylene rubber Valve without spring kit 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Ethylene propylene rubber 50-350 psig (3.4-24.1 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Ethylene propylene rubber 350-750 psig (24.1-51.7 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Ethylene propylene rubber 750-1500 psig (51.7-103.4 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Ethylene propylene rubber 3000-4000 psig (206.8-275.8 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Ethylene propylene rubber 4000-5000 psig (275.8-344.7 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Ethylene propylene rubber 5000-6000 psig (344.7-413.7 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Highly fluorinated fluorocarbon rubber Valve without spring kit 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Highly fluorinated fluorocarbon rubber 50-350 psig (3.4-24.1 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Highly fluorinated fluorocarbon rubber 1500-2250 psig (103.4-155.1 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Neoprene rubber 50-350 psig (3.4-24.1 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Neoprene rubber 350-750 psig (24.1-51.7 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
EA 1/4" male NPT 1/4" A-LOK compression Neoprene rubber 750-1500 psig (51.7-103.4 bar) 316 Stainless steel Special request, please call for COO Special request, please call for HTS
4M4A-RH4A-BNT-SS
Out of Stock - Lead Time Required
$261.70

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Nitrile rubber

Valve without spring kit

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-BNT-SS-K1
Out of Stock - Lead Time Required
$281.10

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Nitrile rubber

50-350 psig (3.4-24.1 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-BNT-SS-K2
Out of Stock - Lead Time Required
$281.10

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Nitrile rubber

350-750 psig (24.1-51.7 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-BNT-SS-K5
Out of Stock - Lead Time Required
$281.10

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Nitrile rubber

2250-3000 psig (155.1-206.8 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-BNT-SS-K6
Out of Stock - Lead Time Required
$281.10

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Nitrile rubber

3000-4000 psig (206.8-275.8 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-BNT-SS-K7
Out of Stock - Lead Time Required
$281.10

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Nitrile rubber

4000-5000 psig (275.8-344.7 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-BNT-SS-K8
Out of Stock - Lead Time Required
$281.10

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Nitrile rubber

5000-6000 psig (344.7-413.7 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-EPRT-SS
Out of Stock - Lead Time Required
$261.70

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Ethylene propylene rubber

Valve without spring kit

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-EPRT-SS-K1
Out of Stock - Lead Time Required
$281.10

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Ethylene propylene rubber

50-350 psig (3.4-24.1 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-EPRT-SS-K2
Out of Stock - Lead Time Required
$281.10

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Ethylene propylene rubber

350-750 psig (24.1-51.7 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-EPRT-SS-K3
Out of Stock - Lead Time Required
$281.10

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Ethylene propylene rubber

750-1500 psig (51.7-103.4 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-EPRT-SS-K6
N/A
Call to Order

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Ethylene propylene rubber

3000-4000 psig (206.8-275.8 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-EPRT-SS-K7
Out of Stock - Lead Time Required
$281.10

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Ethylene propylene rubber

4000-5000 psig (275.8-344.7 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-EPRT-SS-K8
N/A
Call to Order

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Ethylene propylene rubber

5000-6000 psig (344.7-413.7 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-KZT-SS
Out of Stock - Lead Time Required
$357.42

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Highly fluorinated fluorocarbon rubber

Valve without spring kit

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-KZT-SS-K1
Out of Stock - Lead Time Required
$378.39

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Highly fluorinated fluorocarbon rubber

50-350 psig (3.4-24.1 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-KZT-SS-K4
Out of Stock - Lead Time Required
$378.39

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Highly fluorinated fluorocarbon rubber

1500-2250 psig (103.4-155.1 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-NET-SS-K1
N/A
Call to Order

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Neoprene rubber

50-350 psig (3.4-24.1 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-NET-SS-K2
N/A
Call to Order

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Neoprene rubber

350-750 psig (24.1-51.7 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

4M4A-RH4A-NET-SS-K3
Out of Stock - Lead Time Required
$281.10

UOM:

Inlet port 1:

Outlet port 2:

Material - Seals:

Cracking pressure:

Material:

Country of Origin (COO):

Harmonized Tariff (HTS):

EA

1/4" male NPT

1/4" A-LOK compression

Neoprene rubber

750-1500 psig (51.7-103.4 bar)

316 Stainless steel

Special request, please call for COO

Special request, please call for HTS

Showing 1 - 20 of 37
Parker RH4 Relief Valves are designed such that when the upstream pressure exceeds the closing force exerted by the spring, the lower stem opens, permitting flow through the valve. Flow through the valve increases proportionately to the increase in upstream pressure. Pressure settings are externally adjustable while the valve is in operation. Eight different spring ranges provide greater system sensitivity and enhanced performance.

Application: In the key markets of chemical & refining, food, beverage & dairy, medical & dental, microelectronics, oil & gas, and power generation.
Updating...