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
  • Deals
  • 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
User Headset Icon User Headset Icon Customer Service
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

Relief Valves (2,000+ items) - Page 30

Aquatrol Safety Valve, 175 psi, 1 MNPT x 1 FNPT SRS 742DG1M1K1-175
Aquatrol

Safety Valve, 175 psi, 1 MNPT x 1 FNPT SRS

Zoro # G6982880
Mfr # 742DG1M1K1-175
product price:  $570.99
/ea
Aquatrol Safety Valve, 225 psi, 1 MNPT x 1 FNPT 560EE1M1A1-225
Aquatrol

Safety Valve, 225 psi, 1 MNPT x 1 FNPT

Zoro # G6987412
Mfr # 560EE1M1A1-225
product price:  $233.99
/ea
Aquatrol Safety Valve, 500 psi, 1 1/4 x 1 1/2 Sries 741FH1M2J1-500
Aquatrol

Safety Valve, 500 psi, 1 1/4 x 1 1/2 Sries

Zoro # G6982488
Mfr # 741FH1M2J1-500
product price:  $596.99
/ea
Aquatrol Safety Valve, 125 psi, 1 1/2 x 2 Series 741GH1M2J1-125
Aquatrol

Safety Valve, 125 psi, 1 1/2 x 2 Series

Zoro # G6982512
Mfr # 741GH1M2J1-125
product price:  $821.99
/ea
Aquatrol Sfty Vlv, 175 psi, 2 MNPT x 2 1/2 FNPT SRS 743HJ1M1K1-175
Aquatrol

Sfty Vlv, 175 psi, 2 MNPT x 2 1/2 FNPT SRS

Zoro # G6985802
Mfr # 743HJ1M1K1-175
product price:  $3,083.99
/ea
Aquatrol Sfty Vl, 25 psi, 1 1/4 MNPTx1 1/2 FNPT SRS 743FH1M1K1-25
Aquatrol

Sfty Vl, 25 psi, 1 1/4 MNPTx1 1/2 FNPT SRS

Zoro # G6985498
Mfr # 743FH1M1K1-25
product price:  $1,668.99
/ea
Aquatrol Safety Valve, 100 psi, 1 MNPT x 1 1/4 FNPT 570FE1M1K1-100
Aquatrol

Safety Valve, 100 psi, 1 MNPT x 1 1/4 FNPT

Zoro # G6988937
Mfr # 570FE1M1K1-100
product price:  $249.99
/ea
Aquatrol Sfty Vlv, 225 psi, 1 1/2 MNPT x 1 1/2 FNPT 570GG1M1K1-225
Aquatrol

Sfty Vlv, 225 psi, 1 1/2 MNPT x 1 1/2 FNPT

Zoro # G6989208
Mfr # 570GG1M1K1-225
product price:  $350.99
/ea
Aquatrol Sfty Vlv, 225 psi, 3/4 MNPT x 1 FNPT Sries 743EC1M1K1-225
Aquatrol

Sfty Vlv, 225 psi, 3/4 MNPT x 1 FNPT Sries

Zoro # G6985367
Mfr # 743EC1M1K1-225
product price:  $1,143.99
/ea
Aquatrol Safety Valve, 225 psi, 1/2 MNPT x 3/4 FNPT 570DC1M1K1-225
Aquatrol

Safety Valve, 225 psi, 1/2 MNPT x 3/4 FNPT

Zoro # G6988429
Mfr # 570DC1M1K1-225
product price:  $203.99
/ea
Aquatrol Safety Valve, 225 psi, 1 MNPTx1 FNPT Sries 741DG1M2J1-225
Aquatrol

Safety Valve, 225 psi, 1 MNPTx1 FNPT Sries

Zoro # G6982031
Mfr # 741DG1M2J1-225
product price:  $324.99
/ea
Aquatrol Sft Vl, 225 psi, 1 1/4 MNPTx1 1/2 FNPT SRS 742FH1M1K1-225
Aquatrol

Sft Vl, 225 psi, 1 1/4 MNPTx1 1/2 FNPT SRS

Zoro # G6983492
Mfr # 742FH1M1K1-225
product price:  $1,114.99
/ea
Aquatrol Sft Vl, 400 psi, 1 1/4 MNPTx1 1/2 FNPT SRS 743FH1M2J1-400
Aquatrol

Sft Vl, 400 psi, 1 1/4 MNPTx1 1/2 FNPT SRS

Zoro # G6986749
Mfr # 743FH1M2J1-400
product price:  $1,570.99
/ea
Aquatrol Sfty Vlv, 300 psi, 1/2 MNPT x 3/4 FNPT SRS 742DC1M2J1-300
Aquatrol

Sfty Vlv, 300 psi, 1/2 MNPT x 3/4 FNPT SRS

Zoro # G6983930
Mfr # 742DC1M2J1-300
product price:  $555.99
/ea
Aquatrol Sfty Vlve, 300 psi, 1 MNPT x 1 FNPT Series 742DG1M2J1-300
Aquatrol

Sfty Vlve, 300 psi, 1 MNPT x 1 FNPT Series

Zoro # G6984168
Mfr # 742DG1M2J1-300
product price:  $542.99
/ea
Aquatrol Sfty Vlv, 200 psi, 2 MNPT x 2 1/2 FNPT SRS 741HJ1M1K1-200
Aquatrol

Sfty Vlv, 200 psi, 2 MNPT x 2 1/2 FNPT SRS

Zoro # G6981760
Mfr # 741HJ1M1K1-200
product price:  $1,407.99
/ea
Aquatrol Safety Valve, 250 psi, 1 MNPT x 1 FNPT SRS 742DG1M1K1-250
Aquatrol

Safety Valve, 250 psi, 1 MNPT x 1 FNPT SRS

Zoro # G6983063
Mfr # 742DG1M1K1-250
product price:  $559.99
/ea
Aquatrol Sfty Vlv, 200 psi, 3/4 MNPT x 1 FNPT Sries 743EC1M2J1-200
Aquatrol

Sfty Vlv, 200 psi, 3/4 MNPT x 1 FNPT Sries

Zoro # G6986338
Mfr # 743EC1M2J1-200
product price:  $1,154.99
/ea
Aquatrol Sft Vl, 225 psi, 1 1/4 MNPTx1 1/2 FNPT SRS 742FH1M2J1-225
Aquatrol

Sft Vl, 225 psi, 1 1/4 MNPTx1 1/2 FNPT SRS

Zoro # G6984579
Mfr # 742FH1M2J1-225
product price:  $1,089.99
/ea
Aquatrol Sfty Vlv, 200 psi, 1/2 MNPTx3/4 FNPT Sries 743DC1M1K1-200
Aquatrol

Sfty Vlv, 200 psi, 1/2 MNPTx3/4 FNPT Sries

Zoro # G6985017
Mfr # 743DC1M1K1-200
product price:  $1,099.99
/ea
Aquatrol Sfty Vlv, 100 psi, 2 MNPT x 2 1/2 FNPT SRS 741HJ1M1K1-100
Aquatrol

Sfty Vlv, 100 psi, 2 MNPT x 2 1/2 FNPT SRS

Zoro # G6981541
Mfr # 741HJ1M1K1-100
product price:  $1,407.99
/ea
Aquatrol Sfty Vlv, 450 psi, 1 1/2 MNPTx2 FNPT Sries 743GH1M1K1-450
Aquatrol

Sfty Vlv, 450 psi, 1 1/2 MNPTx2 FNPT Sries

Zoro # G6985787
Mfr # 743GH1M1K1-450
product price:  $2,408.99
/ea
Aquatrol Sfty Vlv, 400 psi, 1 1/2 MNPTx2 FNPT Sries 743GH1M2J1-400
Aquatrol

Sfty Vlv, 400 psi, 1 1/2 MNPTx2 FNPT Sries

Zoro # G6986837
Mfr # 743GH1M2J1-400
product price:  $2,380.99
/ea
Aquatrol Sfty Vlv, 25 psi, 1 MNPT x 1 FNPT Series 743EG1M1K1-25
Aquatrol

Sfty Vlv, 25 psi, 1 MNPT x 1 FNPT Series

Zoro # G6985303
Mfr # 743EG1M1K1-25
product price:  $1,183.99
/ea
Aquatrol Sfty Vlv, 400 psi, 3/4 MNPT x 1 FNPT Sries 742EC1M2J1-400
Aquatrol

Sfty Vlv, 400 psi, 3/4 MNPT x 1 FNPT Sries

Zoro # G6984299
Mfr # 742EC1M2J1-400
product price:  $818.99
/ea
Aquatrol Safety Valve, 200 psi, 2 MNPT X 2 1/2 FNPT 570JH1M1K1-200
Aquatrol

Safety Valve, 200 psi, 2 MNPT X 2 1/2 FNPT

Zoro # G6989698
Mfr # 570JH1M1K1-200
product price:  $534.99
/ea
Aquatrol Sfty Vl, 50 psi, 1 1/4 MNPTx1 1/2 FNPT SRS 742FH1M1K1-50
Aquatrol

Sfty Vl, 50 psi, 1 1/4 MNPTx1 1/2 FNPT SRS

Zoro # G6983413
Mfr # 742FH1M1K1-50
product price:  $1,114.99
/ea
Aquatrol Sfty Vlv, 250 psi, 3/4 MNPT x 1 FNPT Sries 742EC1M2J1-250
Aquatrol

Sfty Vlv, 250 psi, 3/4 MNPT x 1 FNPT Sries

Zoro # G6984201
Mfr # 742EC1M2J1-250
product price:  $818.99
/ea
Aquatrol Safety Valve, 15 psi, 3/4 MNPT x 1 FNPT 560ED1M1A1-15
Aquatrol

Safety Valve, 15 psi, 3/4 MNPT x 1 FNPT

Zoro # G6987397
Mfr # 560ED1M1A1-15
product price:  $202.99
/ea
Aquatrol Sfty Vlv, 50 psi, 1 MNPT x 1 FNPT Series 743DG1M2J1-50
Aquatrol

Sfty Vlv, 50 psi, 1 MNPT x 1 FNPT Series

Zoro # G6986268
Mfr # 743DG1M2J1-50
product price:  $1,031.99
/ea
Aquatrol Safety Valve, 200 psi, 1 1/2 MNPT x 2 FNPT 560HG1M1A1-200
Aquatrol

Safety Valve, 200 psi, 1 1/2 MNPT x 2 FNPT

Zoro # G6987893
Mfr # 560HG1M1A1-200
product price:  $387.99
/ea
Aquatrol Sfty Vlve 25 psi, 1/2 MNPTx3/4 FNPT Sries 742DC1M1K1-25
Aquatrol

Sfty Vlve 25 psi, 1/2 MNPTx3/4 FNPT Sries

Zoro # G6982689
Mfr # 742DC1M1K1-25
product price:  $569.99
/ea
Aquatrol Sft Vl, 350 psi, 1 1/4 MNPTx1 1/2 FNPT SRS 742FH1M2J1-350
Aquatrol

Sft Vl, 350 psi, 1 1/4 MNPTx1 1/2 FNPT SRS

Zoro # G6984490
Mfr # 742FH1M2J1-350
product price:  $1,089.99
/ea
Aquatrol Sfty Vlve, 250 psi, 3/4 MNPTx1 FNPT Series 741EC1M2J1-250
Aquatrol

Sfty Vlve, 250 psi, 3/4 MNPTx1 FNPT Series

Zoro # G6982092
Mfr # 741EC1M2J1-250
product price:  $427.99
/ea
Aquatrol Sfty Valve, 150 psi, 1 1/4 x 1 1/2 Series 741FH1M1K1-150
Aquatrol

Sfty Valve, 150 psi, 1 1/4 x 1 1/2 Series

Zoro # G6981340
Mfr # 741FH1M1K1-150
product price:  $662.99
/ea
Aquatrol Safety Valve, 75 psi, 3/4 MNPT x 1 FNPT 570ED1M1K1-75
Aquatrol

Safety Valve, 75 psi, 3/4 MNPT x 1 FNPT

Zoro # G6988587
Mfr # 570ED1M1K1-75
product price:  $220.99
/ea
Relief Valves (2,000+ items) - Page 30
  • First
  • Previous
  • 30
    of 65 pages
  • Next
  • Last
How was your search?

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 ValvesValve PartsSolenoid ValvesBlack Pipe Fittings
PVC Pipe FittingsStainless Steel Pipe FittingsCamlock FittingsBrass Pipe FittingsCopper Fittings
plast-o-matic 2" ball valvehayward back pressure valveaquatrol adjustable relief valve1" safety valvepresure relief valve
air vacuum valvevalve reliefvalve vacuum relief1-1/2" fnpt x mnptrelief vavle

Sign up and 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
  • Deals
  • 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