Spotlight On: Kunkle Safety Relief Valves
A Comprehensive Guide to Kunkle Safety Relief Valves
What are Kunkle Safety Relief Valves?
In the world of PVF, Safety Relief Valves are the unsung heroes of pressure management.
And when it comes to high-quality, durable, and versatile safety relief valves, Kunkle has been a trusted industry leader and manufacturer for decades.
Designed to automatically "relieve" excess pressure, these fail-safe devices are critical for any system that deals with pressure. Overpressure—often caused by system malfunctions—can lead to equipment damage, system failure, or even explosions. That’s why ASME and API standards require their use in pressured systems; they protect equipment, ensure safe operation, and maintain regulatory compliance.
With a wide range of configurations, Kunkle Safety Relief Valves deliver precise pressure relief for fluid, steam, air, and gas systems across industrial and commercial applications. These valves are designed to accommodate nearly any operational requirements, no matter how specific the need.
Kunkle Safety Valve Design & How tHey Work
Kunkle's Safety Relief Valves use a spring-loaded design to automatically control overpressure in a system. Inside the valve, a spring holds the disc tightly against a precisely lapped seat. As system pressure approaches the limit and overcomes the spring force, the disc lifts and creates a flow path for fluid, gas, or steam to escape. This release is what relieves the overpressure, allowing the disc to close back onto the seat. This proportional, modulating valve operation helps prevents any pressure shocks, chatter, and equipment damage.
Their full-proof, dependable design features warn or dual-control rings for precise opening adjustability with minimal pre-open or simmer. The pivot between the disc and spring also corrects any misalignment and side thrust. Many of these valves also include heavy-duty levers for manual testing and verification.
what applications Are Kunkle Safety Relief Valves Used In?
Since Safety Relief Valves are a ASME and API requirement for pressurized systems, they are widely used across an array of services and applications:
|
Services
|
Applications
|
|---|---|
|
Air/Gas ASME Section VIII & XIII
Air/Gas, Non-Code Hot Water ASME Section IV Liquid, Non-Code Steam ASME Section I, IV, & XIII Air, Steam, & Gas Section VIII & XIII Steam, Non-Code Vacuum Air Non-Code |
Boilers and Steam Generators
Chemical or Power Plants Oil & Gas Manufacturing Plumbing, Water Pipelines, or Hydraulic Circuits Compressed Air Systems HVAC or Blower Systems Pressure or Vacuum Protection |
What options are available for Kunkle Safety Relief Valves?
Available in sizes ½" up to 6" x 8”, Kunkle Safety Relief Valves have Brass, Bronze or Cast Iron bodies with various combinations of different trim and end connection options. Popular Kunkle Safety Relief Valve Models currently available on the Cooney Brothers website are:
- Kunkle Model 20 Safety Relief Valves
- Kunkle Models 215V & 337 Safety Relief Valves
- Kunkle Model 537 Safety Relief Valves
- Kunkle Model 548 Safety Relief Valves
- Kunkle Models 6010 & 6021 Safety Relief Valves
- Kunkle Model 6182 Safety Relief Valves
- Kunkle Model 6252 Safety Relief Valves
- Kunkle Model 6283 Safety Relief Valves
- Kunkle Model 930 Safety Relief Valves
| Model Group | Connection | Size | Body Material | Set Pressure Range | View Pricing and Availability |
|---|---|---|---|---|---|
|
20
|
Threaded (MNPT x FNPT) or Flanged
|
½" x ½" – 3" x 3"
|
Bronze
|
1 PSIG – 500 PSIG
| |
|
215V (vacuum) & 337
|
Threaded (MNPT x FNPT) or Flanged
|
2" x 2" – 3" x 3"
|
Cast Iron
|
2 Hg – 29 Hg (215V)
1 PSIG – 60 PSIG (337) | |
|
537
|
Threaded (FNPT x FNPT)
|
¾" x 1" – 2" x 2½"
|
Bronze
|
15 PSIG – 160 PSIG
| |
|
548
|
Threaded MNPT or BPST
|
½"
|
Bronze
|
3 PSIG – 400 PSIG
| |
|
6010 & 6021
|
Threaded (MNPT x FNPT)
|
½" x ½" – 3" x 3"
|
Bronze
|
3 PSIG – 300 PSIG
| |
|
6182
|
Threaded (MNPT x Top Outlet)
|
½" x Top Outlet – 2" x Top Outlet
|
Bronze
|
3 PSIG – 300 PSIG
| |
|
6252
|
Threaded (FNPT x FNPT), Flanged (ANSI 250 x ANSI 125), or Flanged x Threaded (ANSI 250 x FNPT)
|
1½" x 2½" – 6" x 8"
|
Cast Iron
|
10 PSIG – 250 PSIG
| |
|
6283
|
Threaded (MNPT x FNPT)
|
2" x 2" – 3" x 3"
|
Bronze
|
1 PSIG – 500 PSIG
| |
|
930
|
Threaded (MNPT x FNPT)
|
2" x 2" – 3" x 3"
|
Cast Iron
|
15 PSIG
|
We want you to be positive in your search for the right safety relief valves for your application. For internal diagrams and more information on suitable services and applications, visit our Kunkle Safety Relief Selection Guide.
Don't see the size or model you need for your specific application? Contact us and we may be able to provide what you're looking for!
When safety, reliability, and performance matter most, Kunkle Safety Relief Valves remain a trusted essential for all pressurized systems. No matter what your industry or application need is, Kunkle's proven engineering will protect your operations and keep you safe.
Explore over 500 Kunkle Safety Relief Valves on the Cooney Brothers website and find product features, spec sheets, technical brochures, and more.