- Gate valve
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- DN1000 Extension stem double flange soft seal gate valveDIN F4 resilient seated gate valveDN450-1200 Resilient Seated Gate ValveDIN F5 resilient seated gate valveSocket connection soft seal gate valveUnderground cap soft seal gate valveBS5163 rising stem soft seal gate valveHard seal gate valveAPI slab Gate ValveStainless steel flange gate valveWafer knife gate valvePneumatic gate valveSoft seal gate valveExtension stem gate valveUL/FM fire protection groove ends gate valveRising stem forged steel gate valvecarbon steel gate valveStainless steel threaded gate valveDIN soft seal gate valveANSI soft sealing gate valve 200PSICast iron gate valveBS resilient seated gate valve
- Butterfly valve
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- DN900 pneumatic triple eccentric hard seal butterfly valveD643H Triple Eccentric Butterfly ValveD343H Hard seal butterfly valveMulti standard EPDM seated butterfly valveSingle flange butterfly valveDN2000 Double eccentric butterfly valveFlange butterfly valveLug butterfly valveWafer butterfly valve with handleWorm gear operated butterfly valveWafer lined fluorine butterfly valveStainless steel wafer butterfly valveStainless steel flanged butterfly valveThree eccentric flange butterfly valvePneumatic flanged butterfly valvePneumatic wafer butterfly valveTriple eccentric butterfly valve wafer typeWafer butterfly valve ULC approvedInflatable seat butterfly valveHigh performance butterfly valveGrooved end butterfly valveElectric soft seal butterfly valveFlange fluorine lined butterfly valveHandle aluminum butterfly valveWorm Gear Aluminum Butterfly ValveFull PTFE lined butterfly valve wafer typeOne stem no-pin wafer butterfly valveMulti standard aluminum stem butterfly valveStainless Steel wafer Butterfly ValveAluminium handle operated lug butterfly valveLever Operated Flange Butterfly ValveButterfly valve stemButterfly valve discButterfly valve seat
- Ball valve
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- DN1400 top-mounted eccentric semi-ball valveFlanged three-way ball valveFully welded ball valveNatural gas ball valveHigh platform flange ball valve1 PC ball valveFixed ball valvePTFE seat flanged ball valveMetal seat ball valveAPI 6D ball valve3 Piece ball valveFull Bore 3 way ball valve L-Port3 Way T-Port ball valve2PC Ball valve female thread stainless steel
- 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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- Rubber seal check valveDN800 Slow closing check valveDN800 Rubber Disc Check ValveButterfly Buffering Check Valvecheck valve with counter weightSilent Check ValveWCB Swing check valveSwing Check ValveSingle Chip Check Valve H74WStainless Steel Wafer Check ValveSwing Start Check ValveFoot check valveAPI Swing Check ValveDIN Flange check valveSingle plate check valveLifting Check ValveBottom ValveHammer Diminish Noises Check ValveWafer Check ValveWafer dual plate 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
Is EPDM rubber butterfly valve suitable for water medium?
1. Low density and high filling:
The seat material in the EPDM butterfly valve is a lower density rubber. The oil can be filled in a large amount and the filler is added, so that the cost of the rubber product can be reduced, which makes up for the disadvantage that the price of the EPDM rubber is high. And the physical and mechanical properties of the valve seat sealing surface are not greatly reduced after high filling.
2. Ageing resistance:
The common feature of EPDM butterfly valves is that they are not resistant to high temperatures. It can be used at 120 °C for a long time, and can be used temporarily or intermittently at 150-200 °C. However, manufacturers will now try to add suitable anti-aging agents to improve the valve temperature. The EPDM cross-linked EPDM butterfly valve can be used under more severe conditions.
3. Corrosion resistance:
EPDM butterfly valves have excellent resistance to various polar chemicals such as alcohols, acids, bases, oxidants, refrigerants, detergents, animal and vegetable oils, ketones and fats. However, it is less stable in some media such as gasoline, benzene and mineral oil. Therefore, it is not suitable for oil, and its performance is also reduced under the long-term action of concentrated acid.
4. Water vapor resistance:
The EPDM butterfly valve is far superior to the performance of fluorine rubber, silicone rubber, fluorosilicone rubber, butyl rubber, nitrile rubber and natural rubber under the same conditions.
5. Resistance to overheating:
The EPDM butterfly valve is no problem when it is overheated. Its mechanical properties change little and the volume expansion rate is low. However, it is closely related to the vulcanization system used.
6. Electrical performance:
The electrical properties of EPDM butterfly valves are very close to or even better than those of styrene-butadiene rubber, polyethylene and cross-linked polyethylene. It is very good for electrical insulation and corona resistance.
7. Flexibility
In terms of elasticity, the EPDM butterfly valve is second only to natural rubber and butadiene rubber and can be maintained at low temperatures.
8. Adhesiveness
EPDM rubber has low cohesive energy due to lack of active groups in the molecular structure, and the rubber compound is easy to bloom, and its self-adhesiveness and mutual adhesion are very poor.
