Check valves

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Check valves | How to choose the right check valve
The check valve allows fluid to flow in one direction only, blocking its passage in the opposite direction. Fluid backflow can damage circuits, especially hydraulic circuits. These valves can also prevent liquid or steam leaks if there are faults in the pipe structure. They are also installed in sewage pipes to prevent backflow and the passage of bad smells. Check valves can be found in hydraulic pumps and motors, ventilation systems, pump pipes, hydraulic and pneumatic...
swing check valve
swing check valve
240 series

DN: 2 in - 48 in
Temperature: -267 °C - 537 °C

... (Wafer Style Check Valve) Our industrial grade 304/316 stainless steel swing check valve is designed for a flanged piping system, between two flanges. The valves may ...

ball check valve
ball check valve
SCV

Pressure: 6 bar

... plastic components, introduces SCV Series check valves for medical devices. These new check valves come in multiple medical grade materials and sizes to meet a diverse set of fluid management ...

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Value Plastics
safety non-return valve
safety non-return valve
40002BA

... To avoid the backflow of materials up to category 4 into the drinking water installation, the backflow preventer BA (acc. to DIN EN 1717 a “backflow preventer with a controllable middle pression area”) is used as an approved safety device. ...

gas check valve
gas check valve
910.11

DN: 0.5 in
Pressure: 0 bar - 400 bar
Temperature: -10 °C - 120 °C

... pressure gauge valves per DIN 16271, the test pivot is sealed by a lens-type sealing ring and a screw cap placed on top; with valves per DIN 16272, the test pivot is separately isolated by an additional valve ...

vacuum non-return valve
vacuum non-return valve
BNRV series

... release of the manipulated object is required • Prevents suction through the blow-off lines • Reduced feed pressure for full valve opening ...

piston check valve
piston check valve
SIC 0698 6K series

DN: 6 mm - 10 mm
Pressure: 1.5, 12.5 bar

... Use : welding and cutting Fluid : oxygen, acetylene Quick coupling : function ...

ball check valve
ball check valve
A24 series

DN: 0.125 in - 0.5 in
Pressure: 1 bar - 10 bar
Temperature: -10 °C - 130 °C

... Ease of use : Easy to install Construction : Brass and nickel-plated brass Safety : for ringmains Construction Brass body Highlight Network safety ...

ball check valve
ball check valve
GRS

DN: 15 mm - 80 mm
Pressure: 100 mbar - 5,000 mbar

... Non-return gas valve to prevent gas creepage or surge, for gas, air and oxygen. Features & Benefits: GRS: not flame-arresting GRSF: with sinter bronze flame arrester, so flame-arresting in the case of use with combustion ...

lift check valve
lift check valve
BOA-R series

DN: 15 mm - 350 mm
Pressure: 16 bar
Temperature: -10 °C - 350 °C

... Lift check valve to DIN/EN with flanged ends, spring-loaded valve disc, maintenance-free. Benefits Check disc and closing springs made of stainless steel for high functional ...

poppet check valve
poppet check valve
DT series

DN: 0.25 in - 1.25 in
Pressure: 0 psi - 5,000 psi
Temperature: -40 °F - 250 °F

... Parker check valves are unidirectional flow control devices used primarily in hydraulic systems to eliminate potential damage caused by fluid back pressure. DT Series Check Valves (up ...

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Parker Quick Coupling Division
swing check valve
swing check valve
BICV-0 series

DN: 0.25 in - 4 in
Pressure: 400, 125, 175 psi
Temperature: -12 °C - 178 °C

... The Series BICV Brass Inline Check Valves are ideal for use with a broad array of service mediums including compatible oils, gases, fuels and hydrocarbons. They incorporate a soft seat for a bubble-tight shutoff and are ...

ball non-return valve
ball non-return valve
8714 series

... Retaining valve with embossed directional arrow or printed in black. With conical nozzles. Various uses. ...

piston check valve
piston check valve
4000

DN: 10 mm - 80 mm
Pressure: 40 bar
Temperature: -30 °C - 200 °C

... Robust spring-loaded check valve type 4000 from Schubert & Salzer in seat cone design made of stainless steel with high flow rate for aggressive media and high operating temperatures. Size: DN 10 - DN 80 ...

poppet check valve
poppet check valve

Temperature: -20 °C - 70 °C

... For medium flow regulation ■ Robust, durable version ■ Delivery complete with DILO connecting parts ■ Available in DIN 1.0460 und 1.4571 materials ...

membrane check valve
membrane check valve
LFDCV series

DN: 0.25 in - 3.125 in
Pressure: 5.5 MPa
Temperature: -40 °C - 120 °C

... Product overview
Magnetic diaphragm (film‑coated) check valve LFDCV is designed for refrigeration units, commercial cabinets, small central air conditioners and related refrigeration equipment. It controls one‑way ...

ball check valve
ball check valve
ECV

DN: 0 mm - 10,000 mm
Pressure: -10 bar - 7,000,000 bar

... Overview
Emergency Check Valves (ECVs) are designed to block the spread of flames and gases, thereby preventing structural damage and protecting operators. The safety non return valve ...

poppet check valve
poppet check valve

DN: 0 mm - 10,000 mm
Pressure: -10 bar - 7,000,000 bar
Temperature: -273 °C - 2,000 °C

... high‑pressure applications.

Ceramic Valve Components

  • Ceramic valve balls: precision‑ground zirconia balls offered in multiple diameters for check valves, pumps
...

disc non-return valve
disc non-return valve

DN: 200 mm - 600 mm
Pressure: 0 bar - 0.5 bar
Temperature: -20 °C - 60 °C

... -return valve is an ATEX-certified safety device that prevents explosion propagation in duct systems. Installed between the filter and the plant, the internal flap mechanically closes during an explosion to isolate the affected area. ...

swing check valve
swing check valve
16 series

DN: 200 mm - 950 mm
Pressure: 0.5 bar
Temperature: -20 °C - 60 °C

... Geovent non-return valve is an ATEX-certified safety device designed to prevent explosion propagation in industrial duct systems. The internal flap closes mechanically during an explosion pressure wave to isolate the affected section. ...

disc check valve
disc check valve
UNJ

DN: 47.63 mm
Pressure: 0 bar - 20.7 bar
Temperature: 0 °C - 71 °C

... Short Description
UNJ-thread straight-thru check valve in aluminum alloy for aviation fuel and hydrocarbon oil systems. Automatic, spring-loaded disk design with 1.875 in UNJ threads (12 TPI, right-hand) and ...

threaded check valve
threaded check valve

... High quality sanitary stainless steel threaded check valve ...

high-pressure check valve
high-pressure check valve
VR series

Pressure: 450 bar - 4,200 bar
Temperature: -20 °C - 80 °C

... aforesaid valves allow not only to fill, but also to carry out the delivery under pressure with nominal diameters being double compared with the valves that are normally on the market for the pressure range up to 4200 ...

swing check valve
swing check valve
FLAP

... prevent the explosion propagating through the pipes that connect the equipment in question to the rest of the plant. The block valve is studied, designed and tested especially to safely partition the production rooms from the filters. ...

swing check valve
swing check valve
VAC

... BALL CHECK VALVES Ball check valves VAP, with EN 12050-4 certification, are designed for use even with soiled liquids to provide full guarantees of operation in heavy-duty working conditions. ...

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Zenit
poppet check valve
poppet check valve

DN: 1 in - 4 in
Pressure: 0 bar - 10 bar
Temperature: 0 °C - 130 °C

... These AWH non-return valves are engineered for use in pipe lines, systems and machines in the food and drink industry. Suitable for liquid products, additives and cleaning liquids. These valves prevent pipelines running ...

steel check valve
steel check valve
3089204

DN: 0.25 in
Pressure: 0 bar - 30 bar

... This valve can be set from 0 till 30 BAR. It is used on the lubrication point. Key features: - Pressure: from 0 to 30 bar (adjustable) - Material: galvanized steel - Diameter port. 5 mm Elastomeric-plastic seal plate - Fittings: ...

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Dropsa spa
ball check valve
ball check valve
FR055-000

DN: 4.5 mm - 10 mm
Pressure: 0 bar - 1 bar
Flow rate: 2.2 l/min

... liquids and gases. The Flex Check® Zero Leak has integrated an additional plastic sealing element while maintaining exactly the same dimensions and is completely leak-free. Flex Check® high performance check ...

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