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  5. Pipes, Valves & Fittings
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  9. Relief Valves
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Relief Valves (2,000+ items)

Watts T and P Relief Valve, 3/4 In. Inlet 100XL-4
Watts

T and P Relief Valve, 3/4 In. Inlet

Zoro # G2582982
Mfr # 100XL-4
product price:  $33.14
/ea
Watts Calibrated Adjustable Relief Valve, 3/4 in MNPT x 1/2 in FNPT, 0 to 180 Degrees F 530-3/4
Watts

Calibrated Adjustable Relief Valve, 3/4 in MNPT x 1/2 in FNPT, 0 to 180 Degrees F

Zoro # G3453791
Mfr # 530-3/4
product price:  $102.23
/ea
Watts Adjustable Relief Valve, 1/2 In, 175 psi 1/2 LF530-C
Watts

Adjustable Relief Valve, 1/2 In, 175 psi

Zoro # G3108542
Mfr # 1/2 LF530-C
product price:  $132.28
/ea
Apollo Valves Safety Relief Valve, 3/4In, 150 psi, Bronze 1060434
Apollo Valves

Safety Relief Valve, 3/4In, 150 psi, Bronze

Zoro # G0532944
Mfr # 1060434
product price:  $111.99
/ea
Cash Acme Temp/Pressure Relief Valve, 150 PSI, 210 F 18821-0150
Cash Acme

Temp/Pressure Relief Valve, 150 PSI, 210 F

Zoro # G0080538
Mfr # 18821-0150
product price:  $20.89
/ea
Cash Acme Vacuum Relief Valve, 3/4in, MNPT, 125 psi 22398LF
Cash Acme

Vacuum Relief Valve, 3/4in, MNPT, 125 psi

Zoro # G6899742
Mfr # 22398LF
product price:  $21.45
/ea
Watts T and P Relief Valve, MNPT x FNPT LF100XL-4 M7
Watts

T and P Relief Valve, MNPT x FNPT

Zoro # G0285293
Mfr # LF100XL-4 M7
product price:  $32.19
/ea
Apollo Valves Safety Relief Valve, 2 In, 15 psi, Bronze 1420508
Apollo Valves

Safety Relief Valve, 2 In, 15 psi, Bronze

Zoro # G1602815
Mfr # 1420508
product price:  $303.99
/ea
Cash Acme T and P Relief Valve, MNPT x FNPT FVMX-3C
Cash Acme

T and P Relief Valve, MNPT x FNPT

Zoro # G2956791
Mfr # FVMX-3C
product price:  $151.99
/ea
Dayton Relief Valve, 25 GPM, 3/4 NPT x 3/4 NPT 4KHA1
Dayton

Relief Valve, 25 GPM, 3/4 NPT x 3/4 NPT

Zoro # G1435892
Mfr # 4KHA1
product price:  $65.79
/ea
Cash Acme Relief Valve, Bronze, MNPT, 3/4 in., FNPT 15836-0150
Cash Acme

Relief Valve, Bronze, MNPT, 3/4 in., FNPT

Zoro # G4292270
Mfr # 15836-0150
product price:  $18.99
/ea
Apollo Valves Adjustable Relief Valve, 1/2 In, 60 psi 1650125
Apollo Valves

Adjustable Relief Valve, 1/2 In, 60 psi

Zoro # G0661403
Mfr # 1650125
product price:  $43.55
/ea
Watts Vacuum Relief Valve, 0 to 200 psi, SS LFN36-M1-3/4"
Watts

Vacuum Relief Valve, 0 to 200 psi, SS

Zoro # G5388275
Mfr # LFN36-M1-3/4"
product price:  $65.29
/ea
Cash Acme T and P Relief Valve, MNPT x FNPT 16939-0150
Cash Acme

T and P Relief Valve, MNPT x FNPT

Zoro # G2427607
Mfr # 16939-0150
product price:  $113.99
/ea
Apollo Valves Safety Relief Valve, 1 In, 125 psi, Bronze, BtuH: 4, 272, 000 1060525
Apollo Valves

Safety Relief Valve, 1 In, 125 psi, Bronze, BtuH: 4, 272, 000

Zoro # G2036002
Mfr # 1060525
product price:  $137.99
/ea
Watts Temperature and Pressure Relief Valve 3/4 LF40XL-5 150/210FS
Watts

Temperature and Pressure Relief Valve

Zoro # G610565828
Mfr # 3/4 LF40XL-5 150/210FS
product price:  $239.99
/ea
Porter-Cable Pressure Relief Valve; 150 PSI ASME PXCM136-0005
Porter-Cable

Pressure Relief Valve; 150 PSI ASME

Zoro # G905312601
Mfr # PXCM136-0005
product price:  $12.69
/ea
Cash Acme T and P Relief Valve, FNPT x FNPT 16930-0150G
Cash Acme

T and P Relief Valve, FNPT x FNPT

Zoro # G2242283
Mfr # 16930-0150G
product price:  $150.49
/ea
Apollo Valves Safety Relief Valve, 2-1/2In, 15psi, Bronze 1420608
Apollo Valves

Safety Relief Valve, 2-1/2In, 15psi, Bronze

Zoro # G1741187
Mfr # 1420608
product price:  $532.99
/ea
Watts Adjustable Relief Valve, 3/4 x 1/2 In 3/4 LF 530-C STD
Watts

Adjustable Relief Valve, 3/4 x 1/2 In

Zoro # G0395281
Mfr # 3/4 LF 530-C STD
product price:  $141.11
/ea
Apollo Valves VLV, REL, 3/4" F, 50PSI, BRZ 1041810
Apollo Valves

VLV, REL, 3/4" F, 50PSI, BRZ

Zoro # G610832029
Mfr # 1041810
product price:  $41.59
/ea
Apollo Valves Safety Relief Valve, 3/4 In, 125 psi 1740203
Apollo Valves

Safety Relief Valve, 3/4 In, 125 psi

Zoro # G2240621
Mfr # 1740203
product price:  $33.35
/ea
Cash Acme T and P Relief Valve, MNPT x FNPT 16934-0150
Cash Acme

T and P Relief Valve, MNPT x FNPT

Zoro # G3360323
Mfr # 16934-0150
product price:  $90.25
/ea
Apollo Valves T and P Relief Valve, MNPT x FNPT 18C5213125
Apollo Valves

T and P Relief Valve, MNPT x FNPT

Zoro # G2843321
Mfr # 18C5213125
product price:  $139.99
/ea
Kunkle Valve Safety Relief Valve, 2in.x2in., 15 psi 930-H01-GC0015
Kunkle Valve

Safety Relief Valve, 2in.x2in., 15 psi

Zoro # G6121692
Mfr # 930-H01-GC0015
product price:  $398.99
/ea
No Product Image Available
Apollo Valves

Safety Relief Valve, 1-1/2 x 2 In, 15 psi, BtuH: 1, 900, 000

Zoro # G1527461
Mfr # 13214B15
product price:  $143.99
/ea
Apollo Valves Safety Relief Valve, 3/4 In, 15 psi, Bronze 13211B15
Apollo Valves

Safety Relief Valve, 3/4 In, 15 psi, Bronze

Zoro # G1816473
Mfr # 13211B15
product price:  $58.15
/ea
Aquatrol Adjustable Relief Valve, 1 In, 100 psi 69C1A1M2U1-100
Aquatrol

Adjustable Relief Valve, 1 In, 100 psi

Zoro # G0216763
Mfr # 69C1A1M2U1-100
product price:  $185.99
/ea
Watts T and P Relief Valve, 3/4 In. Inlet 3/4 LF 100XL-4
Watts

T and P Relief Valve, 3/4 In. Inlet

Zoro # G0686131
Mfr # 3/4 LF 100XL-4
product price:  $36.25
/ea
Cash Acme Vacuum Relief Valve, Brass, NPT, Vented 22397LF
Cash Acme

Vacuum Relief Valve, Brass, NPT, Vented

Zoro # G4595109
Mfr # 22397LF
product price:  $16.69
/ea
Parker Safety Relief Valve, Overall 1-45/64" L VR744MF2SV
Parker

Safety Relief Valve, Overall 1-45/64" L

Zoro # G5129673
Mfr # VR744MF2SV
product price:  $180.99
/ea
Kunkle Valve Safety Relief Valve, 3/4in.x1in., 150 psi 6010EDM01AAM0150
Kunkle Valve

Safety Relief Valve, 3/4in.x1in., 150 psi

Zoro # G6992632
Mfr # 6010EDM01AAM0150
product price:  $365.99
/ea
Mecline Unloader Valve, 26.4 gpm, 4800 psi, Brass VRT100-330
Mecline

Unloader Valve, 26.4 gpm, 4800 psi, Brass

Zoro # G6211405
Mfr # VRT100-330
product price:  $181.99
/ea
Apollo Valves Safety Relief Valve, 1 In, 15 psi 13202B15
Apollo Valves

Safety Relief Valve, 1 In, 15 psi

Zoro # G1340753
Mfr # 13202B15
product price:  $57.69
/ea
Apollo Valves Safety Relief Valve, 3/4 In, 5 psi 13211B05
Apollo Valves

Safety Relief Valve, 3/4 In, 5 psi

Zoro # G1313426
Mfr # 13211B05
product price:  $63.35
/ea
Watts Vacuum Relief Valve, 1/2 In, Up to 200 psi 1/2 LF N36
Watts

Vacuum Relief Valve, 1/2 In, Up to 200 psi

Zoro # G0998471
Mfr # 1/2 LF N36
product price:  $68.49
/ea
Relief Valves (2,000+ items)
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About Relief Valves

Relief Valves are safety valves that regulate the pressure of a system. They can be used to protect the system from overpressure or to maintain a certain pressure in the system. There are various types of relief valves, each designed for different applications and purposes.

Types of Relief Valves

Pressure relief valves, safety relief valves, and other types of relief valves all serve different purposes and have unique features that make them suitable for specific applications. Pressure relief valves are designed to open at a predetermined pressure to relieve excess pressure from the system while safety relief valves provide emergency protection against overpressure.

How Relief Valves are Made

Relief Valves are typically made with metal bodies and valve discs, such as stainless steel or brass. The valve disc is usually connected to a spring which helps keep it closed until the set pressure is reached. Additionally, some Relief Valves use compounds like rubber or plastic seals in order to ensure proper operation.

Industries that use Relief Valves

Relief Valves can be found in a variety of industries including oil and gas production, power generation, chemical processing, water treatment plants, and more. Professionals in these industries rely on Relief Valves as an important part of their operations because they help protect systems from dangerous overpressure scenarios.

Find the Relief Valves You Need at Zoro

Looking for a specific item? Use our robust search tool to find it by name or keyword, or use our handy filters to narrow down our full assortment. You can also check out our whole selection of plumbing tools & supplies, along with other equipment and essentials to ensure you have all you need to tackle the job, especially if you're taking on a DIY project for the first time.
Plus, when you shop at Zoro, you'll always enjoy competitive prices on tons of great brands you know and trust. We make the shopping experience as fast and seamless as possible with free shipping on orders over $50 for registered users, Net 30 payment terms for qualifying customers, and an unparalleled customer service experience.

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