Single Orifice Air Release Valve is used in systems to release air when necessary. The valves have a working pressure in between 1 bar and 16 bars represented by pressure classes 150 through 2500, pressure numbers PN10 through PN160 and from 150lbs to 2500lbs. The Orifice Air Release Valve design is according to the EN 1074-4 standard specifications. To dissipate small air flow rates, the valves have a single chamber with a float which releases the air when air accumulates. The valve is however, cross section dependent on liquid level. The Cast Iron Air Release Valve has an exhaust flow for the air to be released. There is a small orifice, cover, linkage, seat, valve body, valve connection and a float inside the body.
Single Orifice Air Release Valve
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When the float inside the valve body lowers due to high accumulation of air and low liquid levels inside the body, the vale opens the exhaust and the air flows away. The Single Orifice Air Valve is used in water line systems, oil pipelines and other liquid transmission lines and distribution lines to release the unwanted air accumulation. The sizes, dimensions, shapes, types, pressure capacities and other properties of the valves range with the standards. The 80mm Cast iron Single Orifice Air Release Valve is a medium size valve that is used in most systems. The material can vary from cast iron to carbon steel and alloy steel based on the material that is supposed to flow through the system.
Size | 50NB — 600NB |
---|---|
Pressure | 150PS1 |
Temperature | 0 Deg C - 1200 Deg C. |
Body , Chest | Solid One piece casting of Cast Iron Fg 260, Cast Steel Gr WCB ,CF8,CF8M. |
Seat | Integral to Body, Soft, Optional. |
Gate | AISI SS 304,316,316L,317,317L |
Screw Spindle | AISI SS 410,304,316. |
Nut | Brass |
Yoke | Plate type of MS . |
Gland Follower | Cast Iron , Cast steel , Ductile Iron ,CF8,CF8M. |
Hand Wheel | Cast Iron , Cast steel , Ductile Iron |
Gland Packing | PTFE , PTFE Impregnated |
Ends | Lugged |
Port | STANDARD [Round], Optional V Port, Diamond Port,. |
A Single Orifice Air Valve will continuously release accumulated air during system operation. As air from the pipeline enters the valve, it displaces the water, allowing the float to drop. The air is then released into the atmosphere through a small orifice. As the air is vented it is replaced.
Working pressure | 16kgs/cm3 |
Shell testing pressure | 25kgs/cm3 |
Seat test pressure | 18kgs/cm3 |
1. Body Ductile Iron BS EN 1563 EN-GJS 500/7, 2. Cover Ductile Iron BS EN 1563 EN-GJS 500/7, 3. Orifice bracket Nylon, 4. Orifice cover Nylon, 5. Gasket EPDM WBS listed, 6. Grooved pin Stainless Steel 316 | 7. Float Plastic ABS, 8. O-ring Stainless Steel 316 Grade A4, 9. Washer Stainless Steel 316 Grade A4, 10. Nut Stainless Steel 316 Grade A4, 11. Hex bolt Stainless Steel 316 Grade A4, erials. |
Pressure Rating/td> | 16 Bar |
Cast Steel Air Release Valve
Stainless Steel Air Pressure Relief Valve
Carbon Steel Air Compressor Pressure Relief Valve
Bronze Air Compressor Relief Valve
316 Stainless Steel Air Vacuum Relief Valve
ASTM A217 Grade WC6 Air Safety Relief Valve
Tempreature Range/td> | ≤80°c |
1 | Body & Covers | Cast Iron |
2 | Balls | Rubber coated wooden balls |
3 | Gaskets | Synthetic Rubber |
4 | Plug | High Tensile Brass |
5 | Boltings | Carbon Steel |
Test Pressure | Body : 1.5 MPa Seat : 1.0 MPa |
Maximum Working Pressure | 10Bar |
Temperatures Range | 70oC |