- 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
Difference between ball valve and gate valve
1. Working principle
Ball valve: the opening and closing member (ball) is driven by the valve stem and rotates around the ball valve axis. Ball valve in the pipeline is mainly used to do cut off, distribution and change the direction of media flow, it only needs to rotate 90 degrees of operation and a very small torque to close tightly. Ball valve is most suitable for use as a switch, cut-off valve, V ball valve.
Gate valve: the opening and closing member is the gate, the direction of movement of the gate is perpendicular to the direction of the fluid, the gate valve can only be fully open and fully closed, not for regulation and throttling. The gate valve is sealed by contact between the seat and the gate, usually the sealing surface will be welded metal materials to increase wear resistance, such as welded, stainless steel, etc.. The gate has rigid gate and resilient gate, according to the different gate, the gate valve is divided into rigid gate and resilient gate valve.
2. Spool structure
Ball valve spool for the sphere, due to its fixed ball structure, so that the valve in high pressure conditions, especially in the closed state, the ball is fixed, the upper stem and the lower branch shaft decomposition of part of the pressure from the medium, so the ball does not shift downstream, so the downstream seat pressure is relatively small, so the valve in action to overcome the friction is small, the seat wear is small, the valve long service life, especially This structure is more suitable for valves with frequent action.
The gate valve spool is a wedge-shaped plate or parallel plate. The lower part of the valve has no pivot. Therefore, the valve in high-pressure applications, and in the closed state, the valve plate is subjected to great pressure from the medium, and because of its flat plate structure, so that all the medium pressure at the same time on the valve plate, the valve plate will be dead to the downstream seat (while excessive pressure on the vertical surface of the valve plate, will make the valve plate whether wedge or parallel double gate, there will be a certain deformation), the valve in the Need to overcome great friction when opening, then the wear and tear of the valve seat prints the short life of this valve.
3. Features
Ball valve: wear-resistant; good sealing performance; because the seal of the hard seal ball valve is artificially ground until the spool and the seal completely fit to use. So his sealing performance is reliable; light switching; because the bottom of the seal ring of the hard seal ball valve uses a spring to make the seal ring and the spool hold tightly together, so the switch is very light when the external force exceeds the preload of the spring; long service life.
Gate valve: compact structure, smooth passage, small number of flow resistance, stainless steel and hard alloy used for sealing surface, long service life, PTFE packing. Reliable sealing. Light and flexible operation.
4. Stroke
The stroke of ball valve is angular stroke, so the installation space is small and the height is low. The stroke of the gate valve is straight stroke, so the installation space is large and the height is high.
5. Actuator
The ball valve has a small torque value for opening and closing due to the fixed ball design, so the actuator is matched with a small size accordingly. The gate valve requires a large torque to overcome the large frictional force due to the large compression force of the valve plate on the valve seat, so the actuator is equipped with a large torque.
6. Maintenance
Ball valves generally do not require maintenance, especially the valve ball and seat, due to small wear, generally within 5 years without replacement. Gate valve requires regular maintenance due to the large wear of the valve seat.