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Pipelines having large pockets of air cause more power consumption in the system while decreasing the flow that can rupture pipelines under pressure. Air release valves vent this trapped air which usually collects at the high points in the pipeline.
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E| Style | Model | Body Material | Inlet Size | Seal Material | Price (inc. GST) | |
|---|---|---|---|---|---|---|
| A | ARV125T-CP | SGD 847.07 | RFQ | |||
| B | ARV400EPT-CP | SGD 4479.61 | RFQ | |||
| A | ARV150EPT-CP | SGD 1067.70 | RFQ | |||
| C | ARV050EPT-CP | SGD 571.28 | RFQ | |||
| C | ARV050VT-CP | SGD 585.07 | RFQ | |||
| C | ARV075VT-CP | SGD 620.53 | RFQ | |||
| C | ARV100VT-CP | SGD 648.11 | RFQ | |||
| C | ARV100EPT-CP | SGD 634.32 | RFQ | |||
| A | ARV125EPT-CP | SGD 990.87 | RFQ | |||
| A | ARV200EPT-CP | SGD 1081.49 | RFQ | |||
| B | ARV300EPT-CP | SGD 2529.39 | RFQ | |||
| B | ARV400VT-CP | SGD 4493.40 | RFQ | |||
| B | ARV300VT-CP | SGD 2543.18 | RFQ | |||
| A | ARV200VT-CP | SGD 1093.31 | RFQ | |||
| A | ARV150VT-CP | SGD 1081.49 | RFQ | |||
| C | ARV075EPT-CP | SGD 604.77 | RFQ | |||
| D | ARV300VT-PV | SGD 1879.31 | RFQ | |||
| D | ARV400VT-PV | SGD 2334.36 | RFQ | |||
| D | ARV300EPT-PV | SGD 1867.49 | RFQ | |||
| D | ARV400EPT-PV | SGD 2320.57 | RFQ | |||
| E | ARV200EPT-PV | SGD 973.14 | RFQ | |||
| E | ARV200VT-PV | SGD 982.99 | RFQ | |||
| E | ARV150EPT-PV | SGD 817.52 | RFQ | |||
| E | ARV125EPT-PV | SGD 740.69 | RFQ | |||
| E | ARV125VT-PV | SGD 752.51 | RFQ |
A| Style | Model | Body Material | Inlet Size | Seal Material | Price (inc. GST) | |
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| A | CARD100EP-CP | SGD 996.78 | RFQ | |||
| A | CARD100V-CP | SGD 1010.57 | RFQ | |||
| A | CARD200V-CP | SGD 1296.21 | RFQ | |||
| A | CARD400V-CP | SGD 3467.07 | RFQ | |||
| A | CARD200EP-CP | SGD 1280.45 | RFQ | |||
| A | CARD400EP-CP | SGD 3455.25 | RFQ | |||
| A | CARD100EP-PV | SGD 817.52 | RFQ | |||
| A | CARD100V-PV | SGD 835.25 | RFQ | |||
| A | CARD400V-PV | SGD 1969.93 | RFQ | |||
| A | CARD200EP-PV | SGD 1097.25 | RFQ | |||
| A | CARD200V-PV | SGD 1116.95 | RFQ | |||
| A | CARD400EP-PV | SGD 1950.23 | RFQ |
Val-Matic air release valves are designed for use in pipelines, handling solid-laden fluids, for continually releasing unwanted air and feature 316 stainless steel internal components for withstanding exposure to hydrogen sulfide & aggressive fluids. These units come equipped with a hexagonal stem in round bushing guided floats for preventing the accumulation of debris and a non-clog design for minimising the need for backwashing. Choose from a wide variety of these NSF 61 & 372 certified valves, available in 150 & 175 psi maximum pressures on Raptor Supplies.
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| Model | Item | Price (inc. GST) | |
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| ARV150VS-PV | CT7VAQ | SGD 777.67 |
| Model | Item | Price (inc. GST) | |
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| SP-0043 | CE8PWZ | SGD 41.43 | See Details |
| Model | Item | Price (inc. GST) | |
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| SP-0083 | CE8PYK | SGD 41.43 | See Details |
| Model | Item | Price (inc. GST) | |
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| SP-0084 | CE8PYL | SGD 40.52 | See Details |
Air & vacuum release valves are designed for venting trapped air which collects at high points in the pipeline in manufacturing and production facilities. Raptor Supplies offers various air release valves from brands like Val-Matic, Plast-O-Matic and Marine Industries. These air release valves continuously release the accumulated air from the system, thereby preventing the formation of any large air pockets that can damage the pipelines. These air release valves feature a stainless steel float / poppet that opens / closes as pressure changes. PVC air release valves feature poppet style mechanism for venting out the accumulated air inside the pipeline. PVC air release valves are suitable for applications dealing with low pressures in piping systems. These air release valves are easy to install onto the pipeline ends, usually at a high point for releasing the air. Selected models feature 316 stainless steel construction for withstanding high pressures up to 300 psi while ensuring high resistance against fluids and reactive chemicals. These air release valves have a rubber orifice button constructed of ethylene propylene diene monomer for promoting watertight shutoff during venting. These air release valves are available in 150, 175 & 300 psi pressure ratings on Raptor Supplies, a trusted air release valve supplier of Val-Matic, Plast-O-Matic and Marine Industries.
Air & vacuum release valves automatically exhaust the small amounts of air that usually collects at high points in closed loop pipelines. These SS & PVC air release valves are ideal for water purification, chemical processing, marine and wastewater management industries.
Vestil Air Release Valves:
Plast-O-Matic air release valves:
Air release valves are connected to pipelines at the highest point where air collects. Air bubbles that are trapped inside the pipeline enter the valve while displacing the liquid inside the valve, essentially lowering the liquid level. When the liquid level drops to the point where it no longer buoys the float, the valve float drops. The seat pulls away from the orifice by this motion, thereby opening the air release valve and releasing the accumulated air into the atmosphere. As the air is released / vented, the water / liquid re-enters the air release valve and once again buoys the float, thus lifting it to the point where the seat presses against the orifice, thereby closing the valve. This cycle of air release valves automatically repeats to maintain the air free system.
It is suggested that valves should be 1 inch per 1 feet of pipe diameter. Use correct sizes of valves for the application in hand, ensuring the safety of the pipelines.
Air release valves do not require maintenance or lubrication. If the situation demands maintenance, disconnect the air release valve from the pipeline by closing the shut-off valve. Then, relieve the excess pressure present inside the pipeline and the valve.
The user should install these air release valves vertically at system high points with the inlet down. For pipeline service, provide drainage and adequate screened venting. During the valve closure, little fluid discharge may occur. That is why the vent lines must extend to the open drain area.
Ideally, users should install the vacuum release & air release valves at a gap of 800 metres on long pipes & complex pipeline systems for properly drawing and venting air into the pipeline system. Otherwise, dislodged air pockets could flow downstream to form large pockets of air at the top section of the pipelines.
The pressure inside the valve acts against the valve seat & the resultant force generated from this pressure opens the valve. The valve head stays open until the air pressure drops to zero and all of the accumulated air is released, after which the valve gets closed again. This cycle repeats automatically, releasing all the accumulated air in intervals.
Open the blow-off valve's bottom port and use caution, as this action releases system pressure within the valve. Then, open the blow-off valve's top, thereby allowing the flush water to pass from the valve. Lastly, observe that the water is flushed until the solids wash out of the valve.
The air release valves allow the rising liquid to force the accumulated air out from the piping system. However, air relief valves do not vent the accumulated air below the set pressure point. The air release valves are open at atmospheric pressure and close automatically if the liquid is present inside the valve.
Air release valves are crucial for ejecting the trapped air for ensuring the smooth flow of water in irrigation systems and large & complex pipelines.
Air release valves are open when the system is depressurised. These valves open when the liquid level drops. However, degassing valves are not suitable for expelling large volumes of air at system startup due to their small vet orifice.