- Gate valve
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- DIN f4 di flange resilient epdm gate valveDN450-1200 Resilient Seated Gate ValveDIN F5 Non-rising stem Resilient gate valveDIN F5 Socket connection soft seal gate valveUnderground cap soft seal gate valveBS5163 Rising stem Resilient soft seal gate valveBrass Threaded Gate ValveHard seal gate valveAPI Slab Gate ValveStainless Steel Gate ValveStainless Steel Knife Gate ValvePneumatic gate valve Control valveSoft Seal Gate ValveExtension stem gate valveNon rising stem Groove Soft Sealing Gate ValveRising stem Forged steel gate valveAPI carbon steel gate valveThreaded Gate ValveDin rising Stem And Non-Rising Stem Gate ValveUL-FM Rising stem flanged fire fighting system gate valveANSI Cast Iron Gate ValveBritish Standard Soft-Sealing Gate Valve
- Butterfly valve
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- DN2000 Double Eccentric Butterfly ValveFlange butterfly valveLug butterfly valveWafer Butterfly Valve With HandleWorm Gear Operated Wafer Butterfly ValveWafer lined fluorine butterfly valvestainless steel wafer butterfly valveStainless Steel Flanged Butterfly ValveEccentric soft sealing flange butterfly valveElectric three-eccentric metal hard seal butterfly valvePneumatic Flanged Butterfly ValvePneumatic Wafer Butterfly ValveThree eccentric metal seals wafer butterfly valveULC butterfly valve reportInflatable Butterfly ValveHigh Performance Butterfly ValveGrooved butterfly valvesElectric soft sealing wafer butterfly valveDouble flange fluorine lined butterfly valveHandle Aluminum Butterfly ValveWorm Gear Aluminum Butterfly ValveFull PTFE lined wafer butterfly valveOne stem no-pin wafer butterfly valveMulti standard Aluminum handle wafer butterfly valveMulti standard soft seat aluminum lever coated discwafer type butterfly valveResilient Seated Butterfly ValveMulti standard soft seat wafer type butterfly valveWafer PTFE seat butterfly valveWorm Gear Operated Lug Butterfly ValveStainless Steel wafer Butterfly ValvePneumatic Wafer Butterfly ValveWafer Type Metal Seat Butterfly ValveLug type manual wafer butterfly valve without pinAluminium Handle Lug Butterfly ValveWorm Gear Operated Flange Butterfly ValveLever Operated Flange Butterfly ValveButterfly valve stemButterfly valve discButterfly valve seat
- Ball valve
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- High platform flange ball valveCast Iron Ball ValveSS Thread Ball ValvesThree Piece Type Ball ValveAPI Ball ValveStainless Steel 3PC Ball ValvePTFE Seat Flanged Ball ValveForge Steel Fully Welded Ball ValveMetal Seat Ball Valvesfixed ball valveFlange connection ball valve3PC Type Ball Valve With Internal Thread Q11F/H-1000WOGThree Way Ball ValveANSI API Cast Steel And Stainless Steel Flange Ball valveTwo-PCS Type Thread Ball Valve
- Globe Valve
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- API Carbon Steel Globe ValveBellows Globe ValveStainless steel flange globe valveStainless steel thread S type globe valveStainless steel thread B type globe valveCast Steel Globe ValvePiston Globe ValveWCB Carbon Steel Globe Check Valveelectric motorized control stainless steel SS316 globe valveBrass Globe ValveCryogenic Globe valveHT200 Globe ValveThreaded Stainless Steel Globe ValveGG25 Globe ValveANSI API Cast Steel And Stainless Steel Globe valve
- Check valve
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- DN800 Slow Closing Check ValveDN800 Rubber Disc Check ValveButterfly Buffering Check Valvecheck valve with counter weightSilent Check ValveStainless Steel flange Check ValveSwing Check ValveSingle Chip Check Valve H74WStainless Steel Wafer Check ValveSwing Start Check ValveFoot check valveAPI Swing Check ValveWCB Swing Check ValveCheck ValveLifting Check ValveBottom ValveHammer Diminish Noises Check ValveWafer Check ValveDuctile Iron Check Valve
- Water Meter
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- Vertical Type Water MetersStainless steel threaded water meterPiston water meterPlastic water meterMore flow rotor dry water meterspiral vane flange water meterCI wotlman water meter with pulse outputLXCLG(R) Vertical removable element woltman cold (hot) water meterSingle flow rotor dry water meterPrepaid Token Water MeterElectromagnetic flowmeterRotary Piston Liquid Sealed Water MeterRotary Piston Liquid Sealed Water Meter
- Air valve
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- Double ball exhaust valveDoubleair Air Valve SaudiDoubleair Air Valve Southeast AsiaDoubleair Air Valve South AmericaDouble Air ValveThreaded Air ValveSingle Air ValveTriple Functions Air ValveAutomatic Air Release ValveAutomatic release valveAutomatic exhaust valveComposite Exhaust Air ValveBrass exhaust valveDouble Ball Air Valve
- Pipe Repair & Coupling
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- Flexible Multi-Function Pipe Coupling ZFJ-SSS Semi-Circle Pipe Repair Clamp SJW-HDuctile Iron Band Repair ClampStainless Steel Band Repair ClampDouble-Section Pipe Repair CouplingFolding Type Pipe RepairSingle-Section Multi-Function Pipe Coupling MF-SGear-Ring Type Multi-Function Pipe Coupling GR-SZBW Damping Corrugated Hose
- Dismantling Joint
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- VSSJAFC(CC2F) Detachable Flange Transmission JointVSSJA-2(B2F) Double Flange Limited Expansion JointVSSJA-1(BF) Single Flange Limited Expansion JointVSSJA(AF) Flange Loose Expansion JointJGD-B Threaded Rubber JointZBW Damping Corrugated HoseKXT-S Flexible Dual-Spherical Rubber JointKXT Rubber Soft JointFlange Adaptor
What is an exhaust valve?
What is an air exhaust valve?
The function of air exhaust valve:
Bleed valves are typically used in water or irrigation systems to ensure that air is automatically released from the water system to maximize system performance. If air is not released, entrained air in the pipe can result in excessive head pressure and flow loss.
It is also designed to automatically release any entrained air that accumulates at high points during water delivery, thereby maximizing pipeline efficiency.
Air exhaust valve applications.
The vent valve is used for pipe venting in independent heating systems, central heating systems, heating boilers, central air conditioning, floor heating, and solar heating systems.
Principle of air exhaust valve.
When there is gas overflow in the system, the gas will climb up the pipe and eventually gather at the highest point of the system, and the exhaust valve is generally installed at the highest point of the system, when the gas enters the exhaust valve cavity gathered in the upper part of the exhaust valve, with the increase of gas in the valve, the pressure rises, when the gas pressure is greater than the system pressure, the gas will make the water level in the cavity fall, the float drops with the water level and opens the exhaust port; after the gas is exhausted, the water level rises and the float rises with it, closing the exhaust port. By the same token, when the system produces negative pressure, the water surface in the valve cavity drops, and the exhaust port opens, because the external atmospheric pressure is larger than the system pressure, so the atmosphere will enter the system through the exhaust port to prevent the harm of negative pressure. If you tighten the cap on the valve body of the exhaust valve, the exhaust valve stops exhausting, usually, the cap should be in the open state. The exhaust valve can also be used with the isolation valve to facilitate the maintenance of the exhaust valve.
Features
1、The float of the exhaust valve is made of low-density PPR and composite material, which will not deform even under the immersion of high-temperature water for a long time. It will not cause difficulties in float activities.
2、The lever of the float is made of hard plastic, and the connection between the lever and the float and the support is made of movable connection, so it will not rust and corrode during long-term operation, which will lead to the system not working and leakage.
3、The sealing end part of the lever is supported by a spring, which can be expanded and contracted accordingly with the movement of the lever to ensure the sealing in the case of non-exhaust.
Installation of the air exhaust valve.
When the exhaust valve is installed, it is best to install it together with the isolation valve, so that when the exhaust valve needs to be removed for maintenance, it can ensure that the system is airtight and the water does not flow out. Low-density PP material, this material will not change shape even under the immersion of high-temperature water for a long time.
The operation method of the vent valve.
When the tube begins to fill with water, the plug stays in the open position for a large amount of exhaust, when the air is exhausted, the valve water, the float is floated, drive the plug to the closed position, stop a large amount of exhaust, when the water in the tube is normally transported, such as a small amount of air gathered in the valve to a considerable extent, the water level in the valve drops, the float then drops, at this time the air is discharged from the small hole, when the pumping machine stops, the water in the tube is empty or when the tube When the pumping machine stops, the water in the pipe is empty or when the negative pressure is generated, the plug head opens quickly at this time to suck in air to ensure that the pipe is complete.
Wesdom's exhaust valve type (classification).
Single port exhaust valve, double port exhaust valve, composite exhaust valve