Safety Valves Air Valves
Description
Safety valves, also known as pressure relief valves, are critical components in air compressor systems. Their primary function is to automatically release excess air pressure from the system to prevent overpressure incidents that could compromise equipment safety and integrity. These valves are designed to open at a specific pressure threshold, known as the set pressure, to ensure the system operates within safe limits.
Working Principle
Safety valves operate on a spring-loaded mechanism. Under normal conditions, the spring force keeps the valve closed. When the system pressure exceeds the set pressure, the force exerted by the pressurized air overcomes the spring force, causing the valve to open. This allows excess air to escape, reducing the pressure within the system. Once the pressure drops below the set threshold, the spring force reseals the valve, allowing normal operation to resume. This automatic operation is crucial for maintaining safety and preventing equipment damage due to overpressure .
Applications
Safety valves are widely used in various industrial settings where air compressors are employed. For example, they are essential in manufacturing plants where compressed air is used for powering pneumatic tools and machinery. They are also critical in HVAC systems to ensure safe operation by preventing pressure build-up in air handling units. Additionally, safety valves are used in chemical processing plants to protect against overpressure in reactors and storage tanks.
Advantages over other Air Valves
Safety valves offer several advantages over other types of air valves. Their automatic operation ensures immediate response to pressure changes without the need for manual intervention, which is crucial in preventing accidents and equipment failure. The spring-loaded design provides reliable and repeatable performance, ensuring consistent protection against overpressure. Furthermore, safety valves are designed to comply with strict safety standards, such as the ASME relief valve standard, ensuring their effectiveness in critical applications .
Limitations
One limitation of safety valves is that they require regular maintenance and testing to ensure proper functionality. Over time, components such as springs and seals can wear out or become corroded, potentially hindering the valve's operation. Additionally, safety valves are typically designed for specific pressure ranges, and using them outside these parameters can lead to malfunction or reduced effectiveness .
Considerations
When selecting and maintaining safety valves, several factors should be considered. Initial costs can vary depending on the valve's size, material, and design specifications. Operating expenses are generally low, but regular maintenance is essential to ensure longevity and reliability. Durability is influenced by the materials used and the operating environment, with corrosive or high-temperature conditions potentially reducing the valve's lifespan. Accuracy in pressure release is critical, 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 cost of ownership, as these can impact the long-term economic viability of the system .
from Shanghai Thinktank Process Management Co., Ltd
Description. The 5213 series is a conventional spring-type pressure relief valve. The 5213B series is a balanced piston pressure relief valve. Available for flanged, threaded end connection. Size: 1/4"x1/4" to 1"x1". Nominal Pressure: Class150 ~ Class2500, PN16 ~ PN420. Orifice Diameter: B ~ D(0.283... [See More]
- Valve Type: Directional; Safety
- Valve Size: 1.00 to 4.00
from Bonomi North America, Inc.
0.5" Stainless steel 2-Way NPT Safety Exhaust Ball Valve & Double Acting Pneumatic Actuator [See More]
- Valve Type: Ball; Safety
- Maximum Pressure: 600.00
- Valve Size: 0.50
- Media Temperature: -4 to 302
from ThermOmegaTech®
Operation. A thermostatic element inside the valve senses temperature and if this falls below the setpoint, the valve modulates open to allow flow. When the temperature increases to near the setpoint, the HAT (Heat Actuated Trap) valve modulates closed. HAT valves are available with built-in leakage... [See More]
- Valve Type: Control Valve; Drain; Hydraulic; Safety; Shut Off
- Flow (Cv): 1.30 to 2.00
- Valve Size: 0.50 to 0.75
- Maximum Pressure: 300.00
from Radwell International
3-WAY BALL VALVE, FEMALE RIGHT, UP TO -40 C/F WITHOUT MOVEMENT OF THE HANDLE, -4 F, -20 C, PNEUMATICS, PROCESS CONTROL, SAFETY, FLUID CONTROL, VACUUM TO 20 BAR, VACUUM TO 290.08 PSI, VACUUM TO 2 MPA. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Ball; Control Valve; Safety
- Actuation: Pneumatic
from Bonomi North America, Inc.
0.5" Stainless steel 2-Way NPT Safety Exhaust Ball Valve & 12VDC Plastic On/Off Electric Actuator [See More]
- Valve Type: Ball; Safety
- Maximum Pressure: 600.00
- Valve Size: 0.50
- Media Temperature: -4 to 302
from ThermOmegaTech®
Product Description. TV/HAT valves are ideal for use in conjunction with tracer tubing and tracing systems using pre-traced tubing bundles. These valves are optimal for replacing conventional steam traps on winterization tracing, instrument tracing, condensate return system freeze protection,... [See More]
- Valve Type: Control Valve; Drain; Hydraulic; Safety; Shut Off
- Flow (Cv): 0.50
- Valve Size: 0.25 to 0.50
- Maximum Pressure: 300.00
from Radwell International
AIR PRESSURE REGULATOR, 700 PRECISION, 1/2 INCH NPT PORT, 0-2 PSI / 0-0.15 BAR / RANGE, CHECK VALVE / INTEGRAL SAFETY DEVICE / QUICKLY DUMPS OUTPUT, PRESSURE WHEN THERE IS A LOSS OF SUPPLY AIR. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Regulator; Check; Safety
from Bonomi North America, Inc.
0.5" Stainless steel 2-Way NPT Safety Exhaust Ball Valve & 12VDC Metal On/Off Electric Actuator [See More]
- Valve Type: Ball; Safety
- Maximum Pressure: 600.00
- Valve Size: 0.50
- Media Temperature: -4 to 302
from Radwell International
AIR SAFETY VALVE WITH SOFT SEAT VALVE TYPE, BRASS. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Safety
from Bonomi North America, Inc.
Full port safety exhaust stainless steel ball valve, FNPT threaded [See More]
- Valve Type: Ball; Safety
- Maximum Pressure: 400.00
- Valve Size: 0.50
- Media Temperature: -20 to 450
from Radwell International
EXHAUST VALVE, SAFETY VALVE, 0-140PSI MAX, MAX TORQUE 300 KGF CM. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Safety
from Radwell International
DISCONTINUED BY MANUFACTURER, SAFETY VALVE, 6000 SERIES, MODEL 6186, H ORIFICE, 1-1/2 INCH INLET, METAL SEAT, PLAIN LEVER, AIR/GAS, STAINLESS STEEL SPRING, BRONZE/BRASS TRIM, 150 PSIG MAX SET PRESSURE, OEM ONLY. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Safety
from Radwell International
SAFETY VALVE, 24 VDC, 3-10 BAR, -10 TO 60 DEGREE C, G1/4 PORT, COMPRESSED AIR, ALUMINIUM, POLYURETHANE, COMPRESSED AIR. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Safety
from Alfa Laval Inc.
The Alfa Laval SB Anti Vacuum House minimizes the risk of implosion in closed process tanks that are subject to vacuum conditions, such as while filling or emptying the tank, cool rinsing after hot-cleaning, or caustic cleaning in a CO2 atmosphere. Capable of being integrated into a SCANDI BREW... [See More]
- Valve Type: Safety; Anti-Siphon
- Maximum Pressure: 65.27
- Valve Size: 2.00 to 6.00
from Watts
Series Figure 41A Safety Relief Valves for Air, Gas, and Vapors are ASME section VIII valves used for compressors, intercoolers, aftercoolers and receivers, air makeup units, gas burners, pneumatic conveying/elevating equipment, dryers and other pressure vessels and piping, that handle air, gases,... [See More]
- Valve Type: Relief; Safety
from Doering Company
The Doering PAV Series valve provides an interface between Hydraulic or High Pressure (up to 5000 PSI) pilot signal and low pressure 0-150 PSI pneumatic directional control. The PAV Series valves are available with crack pressure ranging from 50 PSI to 2,000 PSI. High Pressure Pilot controls Low... [See More]
- Valve Type: Safety
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Valve Type: Relief; Safety
- Media Temperature: 356
from Chemac Inc./Uraca/Uhde HPT/Gather/BHDT
Full Stroke Safety Valve. Pressure regulating screw. Spring plate. Compression spring. Pressure bolt. Valve guide and seat. Valve cone. Retaining disk and flange. Compressed water. Retainging space. Return [See More]
- Valve Type: Safety
from General Pump
Industrial Safety Relief Valve. Features. Duty: It limits the pressure at the max working pressure of the system. How it works: When the max working pressure is exceeded it opens and discharges the total pump flow in the atmosphere eliminating the high pressure in the system. Supply: The valve is... [See More]
- Valve Type: Relief; Safety
- Maximum Pressure: 2900.00
- Valve Size: 0.75
- Connection Description: Threaded; 3/4" G
from Spirax-Sarco
The SV405, SV405P, SV405X and SV406 are full nozzle safety valves for steam and air service in non-critical industrial processes requiring low flow, low pressure and low temperature. [See More]
- Valve Type: Safety
- Media Temperature: 363
- Maximum Pressure: 145.04
- Connection Description: Threaded; Screwed 1/2" or 3/4" BSP
from IBT Industrial Solutions
IBT Industrial Solutions provides products and technical services for a complete line of pneumatic products. Our experience and expertise in the fluid power business, coupled with the strength and reach of our extensive distribution network give you the peace of mind that IBT is the right choice for... [See More]
- Valve Type: Control Valve; Safety
- Actuation: Manual; Mechanical; Pneumatic
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]
- Valve Type: Relief; Safety
- Connection Description: Threaded
- Valve Size: 0.25 to 3.00
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 10mm Nominal Bore Atmospheric Discharge Safety Relief Valve For Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Valve Type: Relief; Safety
- Maximum Pressure: 6.96 to 667.17
- Valve Size: 0.50 to 0.75
- Media Temperature: 5 to 392
from Watson McDaniel Company
The WSVB Safety Relief Valves are used for over-pressure protec- tion on unfired pressure vessels in saturated steam systems. As safety valves open on a non-compressible fluid applica- tion, the disc lifts directly proportional to the increase in system pressure over the valve set point. Safety... [See More]
- Valve Type: Relief; Safety
- Maximum Pressure: 250.00
- Valve Size: 0.50 to 0.75
- Connection Description: Threaded; 1/2" NPT, 3/4" NPT
from Alfa Laval Inc.
Integrated in a SCANDI BREW ® tank top system, the Alfa Laval SB Anti Vacuum Valve is a compact safety valve that minimizes the risk of implosion of tanks when a vacuum condition arises. These conditions occur while filling or emptying the vessel of liquid, cool rinsing after hot-cleaning or... [See More]
- Valve Type: Safety; Anti-Siphon
- Maximum Pressure: 58.02 to 87.02
- Valve Size: 3.94 to 15.75
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Valve Type: Relief; Safety
- Media Temperature: 356
from Chemac Inc./Uraca/Uhde HPT/Gather/BHDT
The URACA safety valve, type HHV, is a spring loaded seat valve with metal seal. Casing is made from spherolitic cast iron. All other materials had been selected for operation with clean water, water-oil-emulsion or hydraulic oil application. After having set the blow-off pressure by turning the... [See More]
- Valve Type: Safety
from Spirax-Sarco
The SV405, SV405P, SV405X and SV406 are full nozzle safety valves for steam and air service in non-critical industrial processes requiring low flow, low pressure and low temperature. [See More]
- Valve Type: Safety
- Media Temperature: 363
- Maximum Pressure: 145.04
- Connection Description: Threaded; Screwed 1/2" or 3/4" BSP
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 13mm Nominal Bore Atmospheric Discharge Safety Relief Valve For Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Valve Type: Relief; Safety
- Maximum Pressure: 40.61 to 304.58
- Valve Size: 0.50 to 0.75
- Media Temperature: 5 to 392
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Valve Type: Relief; Safety
- Media Temperature: 338
from Chemac Inc./Uraca/Uhde HPT/Gather/BHDT
General information. In normal operating conditions, safety valves have to close tightly and must open, if pressure increases to an inadmissibly high figure; they have to avoid further pressure increase and must shut again, after the pressure has been reduced. Hofer safety valves meet these... [See More]
- Valve Type: Safety
from Spirax-Sarco
The SV405, SV405P, SV405X and SV406 are full nozzle safety valves for steam and air service in non-critical industrial processes requiring low flow, low pressure and low temperature. [See More]
- Valve Type: Safety
- Media Temperature: 363
- Maximum Pressure: 145.04
- Connection Description: Threaded; Screwed 1/2" or 3/4" BSP
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 15mm Nominal Bore Atmospheric Discharge Safety Relief Valve For Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Valve Type: Relief; Safety
- Maximum Pressure: 36.26 to 304.58
- Valve Size: 0.75 to 1.00
- Media Temperature: -40 to 392
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Valve Type: Relief; Safety
- Media Temperature: 356
from Spirax-Sarco
The SV405, SV405P, SV405X and SV406 are full nozzle safety valves for steam and air service in non-critical industrial processes requiring low flow, low pressure and low temperature. [See More]
- Valve Type: Safety
- Media Temperature: 363
- Maximum Pressure: 145.04
- Connection Description: Threaded; Screwed 1/2" or 3/4" BSP
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 18mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Valve Type: Relief; Safety
- Maximum Pressure: 30.46 to 522.14
- Valve Size: 1.00 to 1.50
- Media Temperature: -40 to 356
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Valve Type: Relief; Safety
- Media Temperature: 356
from Spirax-Sarco
The SV615 full lift, full nozzle safety valve is suitable for steam, air, inert industrial gas and non-hazardous liquid service. [See More]
- Valve Type: Safety
- Media Temperature: 248 to 446
- Maximum Pressure: 203.05 to 261.07
- Connection Description: Threaded; BoltFlange; DN15, DN20, DN25, DN32, DN40 and DN50
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 25mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Clean & Particle Laden Gases. Notes: Relieving pressure is... [See More]
- Valve Type: Relief; Safety
- Maximum Pressure: 7.25 to 174.05
- Valve Size: 1.00 to 2.00
- Media Temperature: -22 to 356
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Valve Type: Relief; Safety
- Media Temperature: 338
from Spirax-Sarco
The SV60 is a range of full lift flanged safety valves suitable for use on steam, inert industrial gas and water services. Please contact Spirax Sarco for suitability of any other media. [See More]
- Valve Type: Safety
- Media Temperature: 662 to 752
- Maximum Pressure: 2.90
- Connection Description: BoltFlange; DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125 and DN150
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 25mm Nominal Bore Enclosed Discharge Safety Relief Valve for Compressed Air & Gases. Notes: Maximum permissible built up... [See More]
- Valve Type: Relief; Safety
- Maximum Pressure: 81.95 to 435.11
- Valve Size: 1.25 to 2.00
- Media Temperature: -4 to 392
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Valve Type: Relief; Safety
- Media Temperature: 356
from Spirax-Sarco
The SVL606 is a stainless steel, full lift T ÜV approved flanged safety valve suitable for use with steam, gas and liquids. [See More]
- Valve Type: Safety
- Media Temperature: 266 to 572
- Maximum Pressure: 101.53 to 580.15
- Connection Description: BoltFlange
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 3mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Valve Type: Relief; Safety
- Maximum Pressure: 699.08 to 3501.21
- Valve Size: 0.38 to 0.75
- Media Temperature: -40 to 356
from CEME
CEME has always been a reference point for the ironing and steam cleaning world. The most important brands in this sector rely on CEME for electro valves, pumps, pressure gauges and safety valves, so as to guarantee the utmost efficiency and quality for their products. . Temperature and... [See More]
- Valve Type: Relief; Safety
- Media Temperature: 356
from Spirax-Sarco
The SVL488 is a soft seated stainless steel, full lift, T ÜV approved safety valve suitable for steam, gas and liquid applications. [See More]
- Valve Type: Safety
- Maximum Pressure: 118.93 to 232.06
- Valve Size: 1.50 to 6.00
- Media Temperature: 302
from Seetru Limited
Flows Rates: Flow calculated based upon: Air @ 15 °C and 1013 mbar and are for guidance only, contact Seetru for help in sizing to your specifications. Product Description: 4mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & Gases. Notes: Relieving pressure is set... [See More]
- Valve Type: Relief; Safety
- Maximum Pressure: 1000.76 to 6500.59
- Valve Size: 0.25 to 0.50
- Media Temperature: -40 to 356