Compressed Air Pressure Relief Valves
Description
Compressed air pressure relief valves are critical safety components in pneumatic systems. Their primary function is to prevent over-pressurization by automatically releasing excess air when the system pressure exceeds a predetermined limit. This ensures that the system operates within safe pressure levels, protecting equipment and maintaining operational integrity.
Working Principle
Compressed air pressure relief valves operate based on a spring-loaded mechanism. Under normal conditions, the valve remains closed due to the force exerted by a spring. When the system pressure surpasses the set pressure limit, the force from the pressurized air overcomes the spring force, causing the valve to open. This opening allows excess air to escape, reducing the system pressure to a safe level. Once the pressure falls below the set threshold, the spring force reseals the valve, ensuring continuous protection against overpressure. These valves are essential for maintaining safety and preventing equipment damage in various industrial settings.
Applications
Compressed air pressure relief valves are widely used in various industrial applications. For example, they are crucial in air compressor systems to prevent tank rupture due to overpressure. They are also employed in pneumatic circuits to safeguard downstream components such as air tools and cylinders. Additionally, these valves are used in lorries to ensure safe operation by managing pressure levels when multiple consumers are connected to a single compressor.
Advantages over other Process - Valves
Compressed air pressure relief valves offer several advantages over other types of process valves. Their automatic operation ensures immediate response to pressure spikes, providing reliable protection without manual intervention. The spring-loaded design allows for precise pressure control, making them suitable for applications requiring consistent pressure regulation. Furthermore, their compact size and ease of adjustment contribute to their versatility and widespread use in various industrial settings.
Limitations
Despite their advantages, compressed air pressure relief valves have certain limitations. They require regular maintenance to ensure proper functionality, as components like springs and diaphragms can wear out over time. Additionally, these valves may not be suitable for applications requiring "pop safety" features, as they are designed for gradual pressure release rather than sudden, full-flow discharge.
Considerations
When selecting and maintaining compressed air pressure relief valves, several factors should be considered. Initial costs can vary based on the valve's size and specifications, while operating expenses may include regular testing and maintenance to ensure reliability. Durability is influenced by the materials used in construction, with corrosion-resistant options offering longer service life. Accuracy in pressure regulation is crucial, and valves should be tested periodically to verify their set pressure and resealing capabilities. Replacement and maintenance costs should also be factored into the overall lifecycle cost of the valve, ensuring that the system remains safe and efficient over time.
from Clippard
When Clippard introduced a miniature regulator in 1962, the MAR-1 became very popular as a simple, robust, and cost-effective regulator in a small pack- age with exceptionally long life . As regulator applications continue to increase, Clippard is meeting the demand with a variety of new models,... [See More]
- Media: Air; Compressed Air
- Maximum Pressure: 300.00
- Valve Size: 0.12
- Controlled Pressure Range: 10.00 to 100.00
from Haskel International LLC
Featuring a repeatable pressure release design for pressures up to 20,000 psi (1,380 bar). [See More]
- Media: Air; Compressed Air; Gas
- Maximum Pressure: 1500.00 to 20000.00
- Valve Size: 0.75
- Connection Description: Compression
from Valcor Engineering Corporation
Valcor Relief Valves provide over-pressurization protection with direct acting and/or pilot operated mechanical components. Our relief valves are available in dual ported (inlet and outlet ports) or ambient vented styles and are suitable for many different aerospace plumbing applications. [See More]
- Media: Hydraulic; Air; Compressed Air
- Connection Description: Threaded
- Maximum Pressure: 20.00 to 3800.00
- Primary Material: Aluminum; Exotic Metal
from Trebor International
Many of our end users have lines with high backpressures, which can negatively affect the operation of AODD pumps. To help reduce the backpressure on pumps in such applications, we designed the Quick Exhaust Valve. In addition to reducing the exhaust backpressure, it can capture any chemical in the... [See More]
- Media: Air; Compressed Air; Water
- Connection Description: Threaded
from Equilibar, LLC.
Precision Back Pressure Regulator for Hygienic Service. For gas, liquid and mixed phase processes. Wide Range of working Pressures and Flows. Rugged 316 stainless steel Bar Stock Design with no Welded Fittings. Hygienic: No Crevices, <32Ra Finish. 3 Piece Low Dead Volume Design. Ports are the... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Powder Solids (optional feature); Steam
- Maximum Pressure: 0.00 to 150.00
- Valve Size: 0.50
- Controlled Pressure Range: 0.00 to 150.00
from Clark Solutions
The 1/4" to 3/4" relief valves are suitable for pressure settings up to 100 PSI. Higher pressure settings are possible by changing the spring. The 1" relief valve is suitable for pressure settings up to 200 PSI. [See More]
- Media: Air; Compressed Air
- Controlled Pressure Range: 100.00
- Valve Size: 0.25
- Connection Description: Threaded; 1/4" NPT
from Armstrong International
The GD-10/10F is a lightweight direct-acting diaphragm valve used primarily for pneumatic tool air supply and non-hazardous gas regulation. Screwed connections make it easy to support in position without external sensing lines or other parts. Zinc or aluminum bodies eliminate rust and scale. Plug,... [See More]
- Media: Air; Compressed Air; Gas
- Maximum Pressure: 0.00 to 250.00
- Valve Size: 0.25 to 1.00
- Connection Description: Threaded; (1/4", 3/8", 1/2", 3/4", 1") NPT
from Air Logic
The Valve is designed for precise control in pneumatic control circuits. It can be used as a relay valve to sequence specific signal operations or as a relief valve to limit pressure in a pneumatic system. Fixed or adjustable pressure settings are available; the pressure range is 0-20 PSI. To adjust... [See More]
- Media: Air; Compressed Air
- Maximum Pressure: 30.00
- Valve Size: 0.06 to 0.12
- Controlled Pressure Range: 0.00 to 20.00
from Terra Universal, Inc.
Continuously bleeds off excess internal gas to maintain a safe positive pressure inside glove boxes. Variable release mechanism automatically discharges any sudden surge of incoming gas. Protects against accidental negative pressure by functioning as a check valve. Extends life of doors and gaskets. [See More]
- Media: Air; Breathable; Compressed Air
- Connection Description: Threaded (optional feature); Union (optional feature)
- Valve Size: 0.62 to 1.00
- Primary Material: Stainless Steel (optional feature); polymer
from FITOK GmbH
Founded in 1998, FITOK Group has been an industry-leading developer and manufacturer of superior quality instrumentation valves and fittings, having our R &D centers, manufacturing facilities, warehousing and service locations in Offenbach Germany, Texas USA, Shenzhen China and Dubai UAE. We... [See More]
- Media: Air; Compressed Air; Water
- Maximum Pressure: 1500.00 to 60000.00
- Valve Size: 0.08 to 0.31
- Connection Description: Threaded
from CIRCOR Energy
CIRCOR Energy offers several lines of spring-loaded safety relief valves ideally suited for pipe and pressure vessel protection in Upstream, Midstream and Downstream Hydrocarbon applications. Useful for air, gas, liquid and mixed phase services, these valves are designed for reliable operation, long... [See More]
- Media: Air; Compressed Air; Gas; LP Gas; Natural Gas
- Controlled Pressure Range: 12500.00
- Valve Size: 0.25 to 3.00
- Connection Description: Threaded
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; High Purity (optional feature); Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 72.52 to 1740.45
- Valve Size: 0.59
- Controlled Pressure Range: 72.52 to 1740.45
from Carr Lane Manufacturing Co.
This safety valve is used to protect hydraulic circuits from unexpected pressure increases. Applications include disconnected pallet fixtures, where the temperature of a closed system could increase and cause hydraulic pressure to exceed acceptable operating limits. Poppet-type valve, directly... [See More]
- Media: Hydraulic; Air; Compressed Air
- Maximum Pressure: 7500.00
- Valve Size: 0.25 to 0.50
- Connection Description: Threaded; 1/4" to 1/2" BSPP
from Equilibar, LLC.
Precision Back Pressure Regulator. For gas & mixed phase processes. Rugged Bar Stock Design. Available in ¼ inch through 1 inch sizes. SS316 standard with Hastelloy C optional. Diaphragms available in PTFE, Hastelloy, SS316, and polyimide. The GS series is specifically designed for a... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Powder Solids (optional feature); Steam
- Maximum Pressure: 0.00 to 2500.00
- Valve Size: 0.12 to 1.00
- Controlled Pressure Range: 0.00 to 2500.00
from Armstrong International
The GD-200/200H valves offer high capacity and highly accurate control, with a large, cupped diaphragm for a long stroke. Compact and rugged, the GD-200 ’s composition valve and bronze metal seat mean high performance over a longer service life. Well suited to non-viscous liquid pressure... [See More]
- Media: Air; Compressed Air; Water; Hot Water; Cold Water
- Maximum Pressure: 150.00
- Valve Size: 2.00 to 6.00
- Controlled Pressure Range: 7.00 to 100.00
from FITOK GmbH
Founded in 1998, FITOK Group has been an industry-leading developer and manufacturer of superior quality instrumentation valves and fittings, having our R &D centers, manufacturing facilities, warehousing and service locations in Offenbach Germany, Texas USA, Shenzhen China and Dubai UAE. We... [See More]
- Media: Air; Compressed Air; Water
- Maximum Pressure: 6000.00
- Valve Size: 0.14 to 0.25
- Controlled Pressure Range: 10.00 to 6000.00
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; High Purity (optional feature); Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 72.52 to 1740.45
- Valve Size: 1.26
- Controlled Pressure Range: 72.52 to 1740.45
from Equilibar, LLC.
Equilibar's Research Series back pressure regulator offer precision performance for high pressure applications up to 5000 psig. These regulators provide stable inlet pressure across widely varying flow rates, for liquid, gas, and mixed phase fluids. We can provide diaphragms of Stainless Steel 316,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Powder Solids (optional feature); Steam
- Maximum Pressure: 0.00 to 10000.00
- Valve Size: 0.12
- Controlled Pressure Range: 0.00 to 10000.00
from Armstrong International
The GD-30 is a compact, high-performance direct-acting valve. Economical to buy and use, it is ideal for those low- to moderate-flow applications where accuracy of +/- 10% is acceptable. The GD-30 is well suited for laundry and dry-cleaning equipment, hospital equipment, tire molds, humidifiers,... [See More]
- Media: Air; Compressed Air; Gas; Steam
- Maximum Pressure: 250.00
- Valve Size: 0.50 to 2.00
- Controlled Pressure Range: 3.00 to 140.00
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity (optional feature); LP Gas; Natural Gas; Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 0.00 to 600.00
- Valve Size: 1.26
- Controlled Pressure Range: 0.00 to 600.00
from Equilibar, LLC.
New Beta HT Series Extends Temperature to 450C. Equilibar has just made its HT Series back pressure regulators available for beta release to select customers. These regulators utilize a graphite seal for temperatures to 450C and pressures to 5000 psig. The Grafoil GTA seal is nuclear grade purity... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Powder Solids (optional feature); Steam
- Maximum Pressure: 0.00 to 5000.00
- Valve Size: 0.12
- Controlled Pressure Range: 0.00 to 5000.00
from Armstrong International
The GD-45 is a compact, high-performance direct-acting valve. Inexpensive to buy and use, it is ideal for those moderate-flow applications that do not justify the higher cost of pilot-controlled valves. The GD-45 is well suited for laundry and dry-cleaning equipment, hospital equipment, tire molds,... [See More]
- Media: Air; Compressed Air; Gas; Steam
- Maximum Pressure: 300.00
- Valve Size: 0.50 to 1.00
- Controlled Pressure Range: 3.00 to 140.00
from co-ax valves inc.
Function: pressure balanced pressure limitation valve, externally controlled or direct acting. Media: gaseous, liquid, highly viscous, contaminated. Body Materials: brass, aluminum, stainless steel, galvanized steel. Options: SAE connection, safety valve, mounting, special voltage, coil M 12 x 1,... [See More]
- Media: Hydraulic; Air; Breathable; Compressed Air; Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater; High Purity (optional feature); Specialty Corrosive (optional feature); Steam (optional feature)
- Maximum Pressure: 145.04 to 2900.75
- Valve Size: 0.31
- Controlled Pressure Range: 145.04 to 2900.75