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

DN: 25 mm - 1,200 mm
Pressure: 2.5 bar - 100 bar
Temperature: -10 °C - 150 °C

... Di Nicola manufactures Swing check valves in carbon steel ASTM 216 WCB / GP 240GH + N and stainless steel with high nickel content alloys for conditions of extreme corrosion from over fifty years with dimensions between ...

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DI NICOLA INFINAM
swing check valve
swing check valve

DN: 50 mm - 1,200 mm
Pressure: 10, 16 bar
Temperature: -30 °C - 200 °C

... Di Nicola manufactures non return valve type swing check , Venturi , double swing , Clasar type , ball type , butterfly type in ductile iron and high nickel content alloys for extreme corrosion from over ...

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DI NICOLA INFINAM
silent check valve
silent check valve

DN: 100 mm - 1,200 mm
Pressure: 25, 40, 10, 16 bar
Temperature: -10 °C - 150 °C

... Swing check valves are used on: acqueducts heatings conditioning pumping stations industry Istallation Installation in horizontal, vertical and battered positon. Quick closure without water hammer. Low head loss. ...

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DI NICOLA INFINAM
gas check valve
gas check valve
HyCheckValve

DN: 6 mm - 8 mm
Pressure: 0 bar - 1,000 bar
Temperature: -50 °C - 85 °C

... Available in two different nominal sizes, this check valve protects upstream equipment from possible damage caused by back pressure and prevents contamination. Thanks to its compact and space-saving design, the HyCheckValve ...

anti-siphon check valve
anti-siphon check valve
55B SS

DN: 0.02, 1 dm
Pressure: 1.5 bar
Temperature: -20 °C - 60 °C

... The angle check anti-siphon valve is an essential safety accessory designed to prevent the siphoning of liquids from an aboveground tank. Constructed from stainless steel, this valve ensures longevity ...

right-angle check valve
right-angle check valve
62 series

DN: 2.5, 2, 1.5 in
Temperature: -20 °C - 60 °C

... Model 62 Angle check valve is designed to prevent the drainage of fuel (loss of prime) in the suction line and permits its flow only towards dispenser. This valve is installed on the manhole lid of the ...

right-angle check valve
right-angle check valve
60SS

DN: 2 in
Temperature: -20 °C - 60 °C

... The STAINLESS STEEL ANGLE CHECK VALVE RIDART is designed to prevent the drainage of fuel (loss of prime) in the suction line and permits the product flowing only towards a dispenser. The valve is normally ...

ball check valve
ball check valve
EV-23

Pressure: 700 bar

... Manually operated check valve. Used to hold load with single or double acting cylinder. Manually opened to allow oil to flow back to oil reserve when cylinder retracts. ...

ball check valve
ball check valve
CKB02

DN: 50 mm - 500 mm
Pressure: 16, 10 bar
Temperature: 0 °C - 80 °C

... The Flowrates ball check valve model CKB is suitable for applications involving the transfer of wastewater, loaded, or viscous fluids. Ball check valves are installed on pipelines ...

ball check valve
ball check valve
CKB

DN: 50 mm - 500 mm
Pressure: 10, 16 bar
Temperature: 0 °C - 80 °C

... The Flowrates ball check valve model CKB is suitable for applications involving the transfer of wastewater, loaded, or viscous fluids. Ball check valves are installed on pipelines ...

disc check valve
disc check valve

DN: 100 mm - 1,800 mm
Pressure: 10, 16 bar
Temperature: 0 °C - 90 °C

... left to the right. Upon request, it is possible to provide this check valve with a protection cover for more safety Main Characteristics and Advantages of the Weighted Check Valve ...

ball check valve
ball check valve
DV360

DN: 10 mm - 100 mm
Pressure: 0.2 bar

... passing direction – reflux inhibitor Fluids • Neutral media free from solids and aggressive liquid or gaseous media if the valve components that contact the media are resistant to the service temperature according to the Divatec resistance ...

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DIVATEC,SL
threaded check valve
threaded check valve

DN: 15 mm - 50 mm

... • PVC materials, PP • EPDM gaskets, FPM • Gluing connections, soldering socket, threaded, DIN or ANSI flanges Advantage Low pressure loss and reliable chewing performance even with small differential pressure Chemical resistance of superior ...

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DIVATEC,SL
swing check valve
swing check valve
DV303

DN: 15 mm - 150 mm
Pressure: 10 bar

... prescribed direction of passage – reflux inhibitor Flow media • Neutral media and aggressive liquid or gaseous media if the valve components that contact the media are resistant to the service temperature according to the Divatec ...

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DIVATEC,SL
swing check valve
swing check valve
Multi

DN: 250 mm - 500 mm
Pressure: 0.9 bar

... MULTI in-line non-retainable is a space-saving, one-sided cover valve ideal for set up on the interiors of pipe works and have an ISO PN 10 flange in order to be attached to the perpendicular walls (grade 1.4401 (316). These flaps ...

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NORHAM SAS
swing check valve
swing check valve
Multi N

DN: 200 mm - 600 mm
Pressure: 1 bar

... Multi N is a pipe outlet flap valve consists of a system that can eradicate the back flow of water in case of sudden increase in its level. It works by opening its flap to flow in the normal direction and then closes to stop any counter ...

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NORHAM SAS
swing check valve
swing check valve
Muti NB 200 - 600 series

DN: 200 mm - 600 mm
Pressure: 1 bar

... MULTI NB 200 to 600 is a diagonal cover outlet valve ideal for restricted areas, supplied with an ISO PN 10 flange in order to be attached to the perpendicular walls (grade 1.4401 (316) or a basic flange (particular screws needed). ...

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NORHAM SAS
springless check valve
springless check valve
ERV/01

DN: 10 mm

... Check valve in PA Springless with two stainless steel balls Installation position : Vertical in flow direction Length : 37.5 mm Outer diameter : 10 mm For hose 6 x 4 (flexible) ...

springless check valve
springless check valve
ERVM05

DN: 10 mm

... Stainless steel check valve Springless with two stainless steel balls Installation position : Vertical in flow direction Length : 34.0 mm Outer diameter : 10 mm Connection : M5 ...

disc check valve
disc check valve
CV-062

DN: 0.06 in
Pressure: 30 psi
Temperature: 40 °C - 150 °C

... A check valve is a type of valve that allows fluids to flow in one direction but closes automatically to prevent flow in the opposite direction (backflow). Applications Include: Medical, HVAC, Light ...

ball check valve
ball check valve
CV-125

DN: 0.125 in
Pressure: 0 psi - 100 psi
Temperature: 4 °C - 66 °C

... A check valve is a type of valve that allows fluids to flow in one direction but closes automatically to prevent flow in the opposite direction (backflow). Applications Include: Medical, HVAC, Light ...

pilot-operated check valve
pilot-operated check valve

DN: 0.25 in
Pressure: 0 bar - 400 bar

... Pilote check valves Female Thread: 1/4 Maximum Pressure: 400 bar ...

swing check valve
swing check valve
MP 170

DN: 300 mm
Pressure: 0 Pa - 1,600,000 Pa
Temperature: -10 °C - 80 °C

... ART. 170 Cast iron (GJL 250) PN 16 horizontal swing check valve brass-rubber trim. Made in Italy. Fields of application: Industrial plants - Sewage Water - Water treatment - Air-conditioning systems (HVAC) - Central ...

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MARAN E PERACINI
swing check valve
swing check valve
MP 170LP

DN: 40 mm - 300 mm
Pressure: 16 bar
Temperature: -10 °C - 80 °C

... Cast iron (GJL 250) PN 16 horizontal swing check valve brass-rubber trim lever and counterweight. Made in Italy. Fields of application: Industrial plants - Sewage Water - Water treatment - Air-conditioning systems ...

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MARAN E PERACINI
swing check valve
swing check valve
MP 170SBLP

DN: 40 mm - 300 mm
Pressure: 16 bar
Temperature: 120 °C

... Cast iron (GJL 250) PN 16 horizontal swing check valve bronze-bronze trim lever and counterweight; high temperature. Made in Italy. Fields of application: Industrial plants - Sewage Water - Sea Water - Aggressive fluids ...

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MARAN E PERACINI
DIN non-return valve
DIN non-return valve
30405 series

DN: 0.125 in - 0.5 in
Pressure: 0 bar - 10 bar
Temperature: -10 °C - 70 °C

... unidirectional connection, non-return valves, slide valve, quick exhaust valve Flow regulators 041, 042, 043 Unidirectional flow regulator (block shaped) Valves in general Valves ...

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ITV
DIN non-return valve
DIN non-return valve
IG-AG

DN: 0.125, 0.5, 0.25 in
Pressure: 0 bar - 10 bar
Temperature: -10 °C - 70 °C

... unidirectional connection, non-return valves, slide valve, quick exhaust valve Flow regulators 041, 042, 043 Unidirectional flow regulator (block shaped) Valves in general Valves ...

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ITV
compressed air check valve
compressed air check valve
ipso 048

DN: 6, 12, 10, 8, 4 mm
Pressure: 2 bar - 10 bar
Temperature: -10 °C - 70 °C

... unidirectional connection, non-return valves, slide valve, quick exhaust valve Flow regulators 041, 042, 043 Unidirectional flow regulator (block shaped) Valves in general Valves ...

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ITV
selector swtich check valve
selector swtich check valve
SLT series

DN: 0.125, 0.25 in
Pressure: 1 bar - 10 bar
Temperature: -10 °C - 70 °C

... The SLT circuit switch allows to convey two pneumatic signals into one way, keeping the two pneumatic sources separated. They have aluminium body, NBR seals and brass components and are available with 1/8” and 1/4" ports. CONSTRUCTIVE FEATURES Fluid ...

ball one-way valve
ball one-way valve
UM series

DN: 0.125, 0.25, 0.5 in
Pressure: 1 bar - 10 bar
Temperature: -10 °C - 70 °C

... UM series one way valves are used when there is the need to keep under pressure one tube, allowing, at the same time, the flow if air to one way. ...

stainless steel check valve
stainless steel check valve
PKV-06

DN: 0.375 in
Pressure: 200 bar
Flow rate: 0 l/min - 20 l/min

... The PKV-06 valve, made of stainless steel W.St.1.4301, allows unrestricted flow from V to C ports and blocks flows in the opposite direction until pressure is applied on the pilot port. PKV-06 is used as a static load holder. ...

stainless steel check valve
stainless steel check valve
PKV-30

DN: 0.5 in
Pressure: 200 bar

... Application PKV-30 is used as a static load holder. Specifications The PKV-30 valve, made of stainless steel W.St.1.4301, allows unrestricted flow from V to C ports and blocks flows in the opposite direction until pressure is applied ...

swing check valve
swing check valve
Valvola Clapet

... Closing clapet valve for industrial system of centralized suction. The air pipe coupling is possibile trough a standard union (both not included). The valve body present on the bottom an internal thread G2" that allows ...

membrane check valve
membrane check valve
HM-NR

DN: 50 mm - 600 mm
Pressure: 25 bar

... CHECK VALVE The valve closes totally the pipe line when back flow occurs. The valve is complete with an hydraulic control circuit able to regulate operation’s speed during closing, ...

membrane check valve
membrane check valve
HMC-NR

DN: 80 mm - 300 mm
Pressure: 1 bar - 16 bar

... The valve closes totally the pipe line when back flow occurs. The valve is complete with an hydraulic control circuit able to regulate operation’s speed during closing, preventing surge. TYPICAL APPLICATIONS Pump ...

cartridge check valve
cartridge check valve
RFP 50

DN: 0.75, 0.5 in
Pressure: 10 bar - 250 bar
Flow rate: 0 l/min - 360 l/min

... order. The valve can receive a maximum incoming flow at 60 L/min. The valve can regulate the following fixed flows: 15-21-25-30-36 L/min. The regulated pressure valve must be adjustable by the customer. RFP50 ...

cartridge check valve
cartridge check valve
RFP 70

DN: 1 in
Pressure: 10 bar - 350 bar
Flow rate: 50, 90 l/min

... precise regulation. The valve can receive a maximum incoming flow of 90 L/min. The valve can regulate a maximum flow of 50 L/min. The output regulated flow is adjustable according to necessity in any moment. The regulated ...

piston check valve
piston check valve
MV23 series

Pressure: 10 bar
Temperature: -10 °C - 70 °C

... engraved on the body) and siopped in the reverse way. DATASHEET Recommended tubings: according to the fitting connected to the valve. Applicatron field: pneumatic installations fed with filtered. lubricated air. ...

shuttle check valve
shuttle check valve
MV32 series

Pressure: 2 bar - 10 bar
Temperature: -10 °C - 70 °C

... It is used when two valves hâve to opéra te the same equipment. The signal, no matter from which of the two valves it cornes, is re-ceived by the shuttle valve and trasmitted to the device to operate. DATASHEET Recommended ...

ball check valve
ball check valve
LCV34

DN: 13 mm
Pressure: 40 bar
Temperature: 450 °C

... infiltration at the ladle purging plug a check valve could be installed in the supply piping. The check valve maintains the immediate pressure at the plug in case the supply line discharges. The ...

pilot-operated check valve
pilot-operated check valve
IPV14 series

Pressure: 3 bar - 230 bar
Temperature: -30 °C - 80 °C
Flow rate: 14, 250 l/min

... Holding Valve, double check valve up to 230 BAR, G1/4 OR Manifold type, HYDRAULIC and PNEUMATIC The valve consists of a one-piece housing and is therefore repeatedly mountable. – Screw-In ...

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Inosol
screw-in non-return valve
screw-in non-return valve
ISIV02 series

Pressure: 0 bar - 320 bar

... Screw-In Valve up to 320 bar Miniature-Non Return Valve as Screw-In Valve from stainless steel for thread M6. – Suitable for high pressure areas – Simple mounting hole – Space-saving installation – For ...

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Inosol
ball check valve
ball check valve
ICV02 series

Pressure: 0 bar - 300 bar

... Miniature Check Valve - Individual positioning - Simple mounting hole - Valve combinations possible - For hydraulic and pneumatic applications - Working pressure up to 300 bar - Space saving mounting - ...

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Inosol
check valve
check valve

Pressure: 400, 350 bar

... motor must have a defined direction of rotation when using Sunfab’s anti-cavitation valve. The valve can be adapted to both left and right rotation. Function: A check valve between ...

swing check valve
swing check valve
C 8686

DN: 50 mm - 300 mm
Pressure: 10 bar
Temperature: -30 °C - 180 °C

... Sandwich construction for installation between flanges PN 10 (other pressure stages on request) Materials Body and plate PTFE/coal Sealing FEP-coated O-ring Product advantages Low weight Mounting position horizontal and vertical with flow directions ...

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GEFA Processtechnik
cartridge check valve
cartridge check valve
630 series

DN: 0.5 in - 2 in
Pressure: 0.5 bar - 10 bar
Temperature: -10 °C - 95 °C

... differential pressures, suitability for liquid and gaseous media. Easy service due to the replacement valve cartridge make this diaphragm-controlled overflow valve suitable for a wide range of applications. For ...

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Goetze KG
ball check valve
ball check valve
CV series

Pressure: 0 psi - 4,500 psi

... High flow, zero leak, low pressure drop check valve suitable for most fluid and gas applications. Fully guided poppet with free floating O-ring design is extremely tolerant of particulate contamination. A metal to metal ...

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Generant
ball check valve
ball check valve

Pressure: 138, 420 bar
Temperature: 0 °C - 200 °C

... The 595 In-line check valves are designed to be fitted in air/gas pipe lines and allow only uni-directional flow. The valves are fitted with an elastomer seal for additional sealing tightness ...

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Seetru Limited
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