Featured Categories

  • Tools & Machining
  • Shipping, Packaging & Office Supplies
  • Plumbing
  • Safety

Shop Categories

  • Abrasives & Polishers
  • Adhesives & Tapes
  • Electrical Supplies
  • Electronics
  • Fasteners
  • Food Service & Restaurant Supplies
  • Furniture, Linens & Decor
  • Grounds & Outdoor
  • Hardware & Building Materials
  • Heating & Cooling
  • Janitorial & Cleaning Supplies
  • Lab Equipment & Supplies
  • Lighting
  • Material Handling
  • Medical & Personal Care
  • Paint, Coatings & Supplies
  • Plumbing
  • Power Transmission
  • Pumps
  • Raw Materials
  • Safety
  • Shipping, Packaging & Office Supplies
  • Storage & Workspace
  • Test Instruments & Gauges
  • Tools & Machining
  • Vehicle Maintenance
  • Welding, Soldering & Brazing
  • About Us
  • Promo Codes
  • Contact Us
Added to Cart
Skip to Main Content
FREE Shipping on orders over $50 after you . Restrictions Apply
Zoro Homepage
Close icon
Clipboard Icon Clipboard Icon Quick Order
Cart Icon
0
Cart Icon
0
Cart
  • Low prices on everyday needs. Shop Zoro Select
  • Don't miss these limited time offers. Shop All Deals
  • Get 30 days to pay with Net 30. Apply Now
  1. Home
  2. /
  3. Plumbing
  4. /
  5. Pipes, Valves & Fittings
  6. /
  7. Valves
  8. /
  9. Relief Valves
Search Feedback

Relief Valves (2,000+ items) - Page 3

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
Kunkle Valve Safety Relief Valve, 1/2in.x3/4in., 250psi 6010DCM01AKM0250
Kunkle Valve

Safety Relief Valve, 1/2in.x3/4in., 250psi

Zoro # G7109977
Mfr # 6010DCM01AKM0250
product price:  $336.99
/ea
Watts Lfn36M1-1/2" 0556030 Lead Free LFN36M1-1/
Watts

Lfn36M1-1/2" 0556030 Lead Free

Zoro # G6070417
Mfr # LFN36M1-1/
product price:  $66.19
/ea
Legend Valve 1/2" T50 NL PRS RLF VLV 75-150 111-302NL
Legend Valve

1/2" T50 NL PRS RLF VLV 75-150

Zoro # G1782115
Mfr # 111-302NL
product price:  $13.25
/ea
Maxitrol Rv47Cl-1/2" Gas Pressure RV47CL-1/2
Maxitrol

Rv47Cl-1/2" Gas Pressure

Zoro # G7018034
Mfr # RV47CL-1/2
product price:  $39.95
/ea
Legend Valve 1/2" T50NL PRS RLF VLV 100-150 111-303NL
Legend Valve

1/2" T50NL PRS RLF VLV 100-150

Zoro # G1770285
Mfr # 111-303NL
product price:  $17.39
/ea
Apollo Valves T and P Relief Valve, FNPT, 1-1/2 In Inlet 18C5424150
Apollo Valves

T and P Relief Valve, FNPT, 1-1/2 In Inlet

Zoro # G2511677
Mfr # 18C5424150
product price:  $357.99
/ea
Kunkle Valve Safety Relief Valve, 2in.x2-1/2in., 150psi 6010JHM01AAM0150
Kunkle Valve

Safety Relief Valve, 2in.x2-1/2in., 150psi

Zoro # G7207085
Mfr # 6010JHM01AAM0150
product price:  $804.99
/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
Watts Pressure Relief Valve, Brass, 125 psi 1/2 LF53-125
Watts

Pressure Relief Valve, Brass, 125 psi

Zoro # G805444075
Mfr # 1/2 LF53-125
product price:  $168.99
/ea
Watts Relief Valve, Bronze, 1 in Inlet 1 174A 125 FS
Watts

Relief Valve, Bronze, 1 in Inlet

Zoro # G110565885
Mfr # 1 174A 125 FS
product price:  $320.99
/ea
Apollo Valves T and P Relief Valve, FNPT, 1-1/2 In Inlet 18C5424125
Apollo Valves

T and P Relief Valve, FNPT, 1-1/2 In Inlet

Zoro # G0440885
Mfr # 18C5424125
product price:  $416.99
/ea
Cash Acme T and P Relief Valve, 6-1/2inHx1-15/32inW 19783-0150
Cash Acme

T and P Relief Valve, 6-1/2inHx1-15/32inW

Zoro # G7100073
Mfr # 19783-0150
product price:  $26.59
/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
Plast-O-Matic Pressure Relief Valve, 1/2In, 5 to 100 psi RVD050V-PV
Plast-O-Matic

Pressure Relief Valve, 1/2In, 5 to 100 psi

Zoro # G4188922
Mfr # RVD050V-PV
product price:  $282.99
/ea
Cash Acme T and P Relief Valve, 3/4in., 150 psi 16372-0150
Cash Acme

T and P Relief Valve, 3/4in., 150 psi

Zoro # G6741341
Mfr # 16372-0150
product price:  $34.39
/ea
Aquatrol Safety Valve, 150 psi, 1 MNPT x 1 FNPT 570EE1M1K1-150
Aquatrol

Safety Valve, 150 psi, 1 MNPT x 1 FNPT

Zoro # G6988709
Mfr # 570EE1M1K1-150
product price:  $267.99
/ea
No Product Image Available
Cash Acme

Pressure Only Relief Valve, Brass, 150 psi

Zoro # G616049070
Mfr # FWL-2F
product price:  $23.93
/ea
Apollo Valves T and P Relief Valve, 3/4 In. Inlet 18C402X39
Apollo Valves

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

Zoro # G2161555
Mfr # 18C402X39
product price:  $52.99
/ea
Kunkle Valve Adjustable Relief Valve, 1-1/2 In, 50 psi 0019-G10-MG0050
Kunkle Valve

Adjustable Relief Valve, 1-1/2 In, 50 psi

Zoro # G1598852
Mfr # 0019-G10-MG0050
product price:  $678.99
/ea
Aquatrol Safety Relief Valve, 1/2 x 3/4 In, 250 psi 88A2A1M1K1-250
Aquatrol

Safety Relief Valve, 1/2 x 3/4 In, 250 psi

Zoro # G0214076
Mfr # 88A2A1M1K1-250
product price:  $148.99
/ea
Maxitrol R600Z-1" Gas Pressure Regulator R600Z-1"
Maxitrol

R600Z-1" Gas Pressure Regulator

Zoro # G6989465
Mfr # R600Z-1"
product price:  $138.99
/ea
Kunkle Valve Safety Relief Valve, 1/2in.x3/4in., 150psi 6010DCM01AAM0150
Kunkle Valve

Safety Relief Valve, 1/2in.x3/4in., 150psi

Zoro # G6978343
Mfr # 6010DCM01AAM0150
product price:  $302.99
/ea
Maxitrol Rv48L-1/2" Gas Pressure RV48L-1/2"
Maxitrol

Rv48L-1/2" Gas Pressure

Zoro # G7005784
Mfr # RV48L-1/2"
product price:  $34.45
/ea
Plast-O-Matic Adjustable Relief Valve, 1/2 In, 100 psi RVDTM050T-PV
Plast-O-Matic

Adjustable Relief Valve, 1/2 In, 100 psi

Zoro # G4104852
Mfr # RVDTM050T-PV
product price:  $515.99
/ea
Maxitrol 325-3-3/8" 3/8" Gas Pressure 325-3-3/8"
Maxitrol

325-3-3/8" 3/8" Gas Pressure

Zoro # G7045307
Mfr # 325-3-3/8"
product price:  $40.19
/ea
Watts Vacuum Relief Valve, 3/4" 0556031
Watts

Vacuum Relief Valve, 3/4"

Zoro # G8924017
Mfr # 0556031
product price:  $61.76
/ea
Plast-O-Matic Pressure Relief Valve, 3/4In, 5 to 100 psi RVT075V-PV
Plast-O-Matic

Pressure Relief Valve, 3/4In, 5 to 100 psi

Zoro # G3973383
Mfr # RVT075V-PV
product price:  $577.99
/ea
Watts Temperature and Pressure Relief Valve 3/4 40XL-5 150/210 FS
Watts

Temperature and Pressure Relief Valve

Zoro # G810565819
Mfr # 3/4 40XL-5 150/210 FS
product price:  $275.99
/ea
Dayton Relief Valve, 6 GPM, 1/2 NPT x 1/2 NPT 4KGZ8
Dayton

Relief Valve, 6 GPM, 1/2 NPT x 1/2 NPT

Zoro # G1881311
Mfr # 4KGZ8
product price:  $61.79
/ea
Plast-O-Matic Adjustable Relief Valve, 1-1/2 In, 100 psi RVDT150T-PV
Plast-O-Matic

Adjustable Relief Valve, 1-1/2 In, 100 psi

Zoro # G4002056
Mfr # RVDT150T-PV
product price:  $842.99
/ea
Aquatrol Safety Relief Valve, 3/4 x 1 In, 100 psi 89B2A1M2K1-100
Aquatrol

Safety Relief Valve, 3/4 x 1 In, 100 psi

Zoro # G0214776
Mfr # 89B2A1M2K1-100
product price:  $140.99
/ea
Watts Relief Valve, Bronze, 3/4 in Inlet 3/4 174A 030 FS
Watts

Relief Valve, Bronze, 3/4 in Inlet

Zoro # G310753105
Mfr # 3/4 174A 030 FS
product price:  $237.99
/ea
Apollo Valves Safety Relief Valve, 3 In, 15 psi, Bronze 1420708
Apollo Valves

Safety Relief Valve, 3 In, 15 psi, Bronze

Zoro # G3065413
Mfr # 1420708
product price:  $726.99
/ea
Cash Acme Cash Acme MNPT Bronze Temperature and Pressure Relief Valve FNPT 15836A-0150
Cash Acme

Cash Acme MNPT Bronze Temperature and Pressure Relief Valve FNPT

Zoro # G7695813
Mfr # 15836A-0150
product price:  $16.95
/ea
Parker Safety Relief Valve, Overall 1-45/64" L VR744MF3SV
Parker

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

Zoro # G5129691
Mfr # VR744MF3SV
product price:  $223.99
/ea
Relief Valves (2,000+ items) - Page 3
  • First
  • Previous
  • 3
    of 64 pages
  • Next
  • Last

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.

Related Categories

Ball ValvesCheck ValvesSolenoid ValvesValve PartsPush-to-Connect Tube Fittings
PVC Pipe FittingsStainless Steel Pipe FittingsBlack Pipe FittingsCamlock FittingsCopper Fittings
1/4" mnpt x 1/4" fnpt1/2 in relief valve1/2 propress valve1/2 in. valve1/2 in prv
1-1/2" fnpt x mnpt1/2 mnpt x 3/8 barb1/2 mnpt 1/4 fnpt1/2 inch valve1 2 relief valve

Sign Up & Save

Take 10% off your next order when you sign up for Zoro emails. Subscribe now to receive your promo code via email.

Follow Us

  • Facebook
  • YouTube
  • LinkedIn
  • Instagram
Every Part Plays a Part

Information

  • About Us
  • Accessibility
  • Careers
  • Inclusion
  • Giving Back
  • Resource Hub
  • Returns
  • Shipping

Shopping

  • Brands
  • Collections
  • My Account
  • Payments
  • Promo Codes
  • Sitemap
  • Track My Order

Services

  • Customer Service
  • FAQs
  • Net 30 Terms
  • Reseller Program
  • Sell on Zoro
  • Participate in Research

Zoro, Inc

Connect

Customer Service From Real People

  • Phone: (855) 289-9676
  • Contact Us

© 2011-2026 Zoro Tools, Inc. All rights reserved.
  • Terms & Conditions
  • Terms of Access
  • Privacy Policy
Zoro, Inc