You Searched For: Non Return Valves

Our non-return valves protect tubing and vacuum systems from backflow when pressure falls in the system. Sealing system eliminates backflow, helping to prevent upstream contamination or damage. These valves are compatible with a wide range of systems, all with different specific levels when dealing with the three main pressure values: cracking pressure, maximum pressure, and back pressure created. Durable steel or plastics are used in all designs, with spring loaded, creating a quality product that will remain independent for years with no need for replacement.

Our non-return valves protect tubing and vacuum systems from backflow when pressure falls in the system. Sealing system eliminates backflow, helping to prevent upstream contamination or damage. These valves are compatible with a wide range of systems, all with different specific levels when dealing with the three main pressure values: cracking pressure, maximum pressure, and back pressure created. Durable steel or plastics are used in all designs, with spring loaded, creating a quality product that will remain independent for years with no need for replacement.


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Catalog Number: (HICHHI-128)
Supplier: Avantor
Description: Avantor® Hichrom, Back pressure regulator, Pressure: 5,17 bar
UOM: 1 * 1 items


Supplier: SGE a Trajan company
Description: Micro control valves provide precision metering and on-off control of gas flows. They are designed specifically for chromatography applications and us...

Supplier: Bohlender
Description: These non return valves are made from PTFE, with nuts made from glass fibre reinforced PTFE for connecting tubing or tubes.

Catalog Number: (NALG6120-0010)
Supplier: Thermo Fisher Scientific
Description: These vacuum check valves with positive connector are designed to prevent back pressure with aspirator-type vacuum pumps.
UOM: 1 * 6 items

Low Manufacturing Impact


Supplier: KARTELL
Description: PP, translucent. Prevent pressure loss and backflow. Maximum working pressure 2 bar and minimum working pressure  0,07 bar at room temperature (2...

Catalog Number: (229-3311)
Supplier: Brand
Description: HDPE, transparent. Prevents backflow. With FKM valve disc not suitable for pressure applications.
UOM: 1 * 1 items


Supplier: BROEN-LAB
Description: Thermostatic mixing valve for eye showers designed for delivering tepid water (20 to 25 °C).

Catalog Number: (VITL78593)
Supplier: VITLAB
Description: These non return valves are made from HDPE.
UOM: 1 * 10 items


Catalog Number: (BURK8540-0012)
Supplier: BÜRKLE
Description: Valve made of PP and POM, seal made of EPDM, springs made of stainless steel 1.4401.
UOM: 1 * 1 items


Supplier: BÜRKLE
Description: Translucent PP retaining valves with embossed directional arrow or printed in black. With tapered ends. Various uses.

Supplier: Bel-Art Products, a Part of SP
Description: PP valve, translucent with neoprene valve disk. Stops reverse flow of liquid when pressure is interrupted.

Supplier: Restek
Description: Backpressure regulators can improve detector performance by preventing bubble formation in the detector flow cell. They also are useful in post-column...

Supplier: QVF LABORTECHNIK GMBH
Description: Air valve anti-return, cone size 29/32 NS, without sidearm, Borosilicate glass 3.3

Supplier: Restek
Description: Outlet cartridges, sapphire and ruby ball and seat

Supplier: Restek
Description: These valves have low internal volumes and are rated to 15000 psi. They feature a two-piece stem assembly in which the rotating upper shank is coupled...

Supplier: Agilent
Description: Old style restrictor, 0 - 110 ml/min, green colour

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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at +43 1 97002 - 0.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at +43 1 97002 - 0.
Dual use goods can only be delivered within the European Union.
Dual use goods can only be delivered within the European Union.
This product has been blocked by your organization. Please contact your purchasing department for more information.
The original product is no longer available. The replacement shown is available.
This product is no longer available. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service at +43 1 97002 - 0.
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