Check Valve

Check Valve

Check Valve

◎Specifications:DN8-DN50,1/2"-2"
◎Material:CF8/304,CF8M/316
◎Nominal pressure:PN1.6,2.5,4.0,6.4MPa
◎Strength test pressure:PN2.4,3.8,6.0,9.6MPa
◎High pressure seal pressure test:1.8,2.8,4.4,7.1MPa
◎Applicable medium:H1 H-(16-64)C Water, oil, gas
◎Applicable temperature:-40~180℃

Flange check valve

Flange check valve

◎Check valve is designed to prevent fluid from flowing back and ensure the flow to one way direction.
◎It can be used to reduce the loss of fluid back suction,avoid pipe is shock by liquid
◎It is used in the food-processing, beverages, winery, oil, cosmetics,pharmaceuticals and chemicals industries.
◎The valve is open when pressure of the fluid exceeds the spring pressure and it is closed when the two pressures are close equal.And stronger counter-pressure also makes the valve closed.

◎Specifications: DN-50/2" TO DN-300/12"
◎Boby/shaft: AISI 316L/304
◎Spring: AISI 304
◎Seal: EPDM according to FDA177.2600
◎Surface Treatment: Ra ≤0.8 μm
◎Seal: NBR, FPM (Viton) or PTFE. FDA 177.2600(optional)
◎Connections: weld, thread, clamp, DIN, SMS, RJT, IDF, ISO,3A
◎Max. pressure:10 bar
◎Opening pressure:0.3bar(DN-25)0.2bar(DN-32/40)0.1bar(DN-50/100)
◎Working temperature : -10℃ to 130℃(EPDM)

Check valve with clamp end

Check valve with clamp end

◎Check valve is designed to prevent fluid from flowing back and ensure the flow to one way direction.
◎It can be used to reduce the loss of fluid back suction,avoid pipe is shock by liquid
◎It is used in the food-processing, beverages, winery, oil, cosmetics,pharmaceuticals and chemicals industries.
◎The valve is open when pressure of the fluid exceeds the spring pressure and it is closed when the two
pressures are close equal.And stronger counter-pressure also makes the valve closed.

◎Specifications: DN-25/1" TO DN-100/4"
◎Boby/shaft: AISI 316L/304
◎Spring: AISI 304
◎Seal: EPDM according to FDA177.2600
◎Surface Treatment: Ra ≤0.8 μm
◎Seal:NBR, FPM (Viton) or PTFE. FDA 177.2600(optional)
◎Connections: weld, thread, clamp, DIN, SMS, RJT, IDF, ISO,3A
◎Max. pressure:10 bar
◎Opening pressure:0.3bar(DN-25)0.2bar(DN-32/40)0.1bar(DN-50/100)
◎Working temperature : -10℃ to 130℃(EPDM)

Check valve clamp ends

Check valve clamp ends

◎Check valve is designed to prevent fluid from flowing back and ensure the flow to one way direction.
◎It can be used to reduce the loss of fluid back suction,avoid pipe is shock by liquid
◎It is used in the food-processing, beverages, winery, oil, cosmetics,pharmaceuticals and chemicals industries.
◎The valve is open when pressure of the fluid exceeds the spring pressure and it is closed when the two pressures are close equal.And stronger counter-pressure also makes the valve closed.
◎Specifications: DN-25/1" TO DN-100/4"
◎Boby/shaft: AISI 316L/304
◎Spring: AISI 304
◎Seal: EPDM according to FDA177.2600
◎Surface Treatment: Ra ≤0.8 μm
◎Seal: NBR, FPM (Viton) or PTFE. FDA 177.2600(optional)
◎Connections: weld, thread, clamp, DIN, SMS, RJT, IDF, ISO,3A
◎Max. pressure:10 bar
◎Opening pressure:0.3bar(DN-25) 0.2bar(DN-32/40) 0.1bar(DN-50/100)
◎Working temperature : -10℃ to 130℃(EPDM)

Nut check valve

Nut check valve

◎Check valve is designed to prevent fluid from flowing back and ensure the flow to one way direction.
◎It can be used to reduce the loss of fluid back suction,avoid pipe is shock by liquid
◎It is used in the food-processing, beverages, winery, oil, cosmetics,pharmaceuticals and chemicals industries.
◎The valve opens when pressure of the fluid exceeds the spring pressure.It is closed when the two pressures are close equal.And stronger counter-pressure also makes the valve closed.

◎Specifications: DN-25/1" TO DN-100/4"
◎Boby/shaft: AISI 316L/304
◎Spring: AISI 304
◎Seal: EPDM according to FDA177.2600
◎Surface Treatment: Ra ≤0.8 μm
◎Seal:NBR, FPM (Viton) or PTFE. FDA 177.2600(optional)
◎Connections: weld, thread, clamp, DIN, SMS, RJT, IDF, ISO,3A
◎Max. pressure:10 bar
◎Opening pressure:0.3bar(DN-25)0.2bar(DN-32/40)0.1bar(DN-50/100)
◎Working temperature : -10℃ to 130℃(EPDM)

Third generation high purity check valve

Third generation high purity check valve

In 2015, DONJOY carried out a comprehensive technical update of the check valve. After the upgrade, the check valve has a smaller dead angle, smaller flow resistance, and the valve core is sealed with full PTFE. Satisfied with automatic welding, the technology meets ASME BPE, 3-A-6800, EHEDG high clean technical requirements.
◎Check valve is designed to prevent fluid from flowing back and ensure the flow to one way direction.
◎It can be used to reduce the loss of fluid back suction,avoid pipe is shock by liquid
◎It is used in the food-processing, beverages, winery, oil, cosmetics,pharmaceuticals and chemicals industries.
◆SIZE: 1/2"-8", DN10-DN200
◆Material: 304/316L
◆ Pressure: 10bar
◆Opening pressure: 0.02bar
◆Negative pressure: -0.9bar
◆Temperature: -30 ° C to 130 ° C (150 ° C optional)
◆ valve body structure: nut type, clamp, flange
◆Interface: various special interfaces such as welding, clamp, thread, flange, etc.

File Description Language Size
Check Valve Flange type, nut type, clamp type, PTFE seal and other check valves English 3.3MB)
Self-Control Valve Contains, valve positioner, valve control unit, valve position feedback English 9.6MB)
Breathing Valve The breathing valve is a valve that prevents vacuum and a safe exhaust English 3.35MB)
Vent Exhaust valve is a valve used to exhaust the bubbles generated during the fermentation process. English 3.44MB)