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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: (46600-040)
Supplier: VWR International
Description: This polypropylene non-return valve protects tubing and vacuum systems from back flow when pressure falls in the system.

Catalog Number: (76399-160)
Supplier: HICHROM LIMITED
Description: Back pressure regulator


Supplier: DWK Life Sciences (KIMBLE)
Description: One-Way valves are designed for use in making connections between the tubing and the end fittings of CHROMAFLEX® columns.

Catalog Number: (21511-218)
Supplier: Upchurch Scientific
Description: Injection molded PEEK™ valves hold to 1000psi (to 500psi with gas) and turns at a much lower torque


Supplier: Upchurch Scientific
Description: Connect standard 1/4-28 Inline Check Valves to any 1/4-28 flat-bottom port to limit flow to one direction

Supplier: Upchurch Scientific
Description: Upchurch Scientific® Back Pressure Regulators (BPRs) are designed to enhance system performance through outgassing prevention and improved pump check ...

Supplier: Restek
Description: Parker's fittings are ideal for installing new equipment, modifying existing instrumentation, or replacing worn connections.

Supplier: Optimize
Description: Preassembled check valve cartridges conveniently insert into a reusable housing and function in either the inlet or outlet position

Catalog Number: (89209-350)
Supplier: Chemglass
Description: These drain valves are suitable for filter reactors having volumes from 0 - 14 l.

Small Business Enterprise


Supplier: Restek
Description: Outlet Check Valve for Shimadzu LC-10ADvp, LC-10A Tvp, Similar to Shimadzu# 228-34976-91

Supplier: Restek
Description: Our valves have low internal volumes and are rated to 15,000 psi (103,421 kPa).

Supplier: Upchurch Scientific
Description: Prevent system over-pressurization with Upchurch Scientific® Pressure Relief Valves

Supplier: Upchurch Scientific
Description: Upchurch Scientific® Ultra-Low Volume Back Pressure Regulators (BPRs) were developed to minimize swept volume, which is especially important for multi...

Supplier: Restek
Description: Parker's fittings are ideal for installing new equipment, modifying existing instrumentation, or replacing worn connections.

Catalog Number: (10853-426)
Supplier: Restek
Description: Outlet Check Valve for PE 200, 4, 250, 400, 410, 620, Similar to PE# 02540197


Catalog Number: (10853-686)
Supplier: Restek
Description: PerformancePLUS Check Valve Housing, for HPLC Systems, Model No: 1515, 1525, 510, 515, 525, 600, 610


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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 1-800-932-5000.
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 1-800-932-5000.
To process your orders without delay, please provide the required business documentation to purchase this product.

To order chemicals, medical devices, or other restricted products please provide ID that includes your business name & shipping address via email CMD_NA@vwr.com or fax 484.881.5997 referencing your VWR account number. Acceptable forms of ID are:

  • State issued document with your organization's Federal Tax ID Number
  • State issued document with your organization's Resale Tax ID Number
  • City or County issued Business License
  • State Department of Health Services License
  • Any other ID issued by the State that includes the business name & address

* ATTN: California Customers may require additional documentation as part of the CA Health & Safety Code. Products that fall under this regulation will be placed on a mandatory 21-day hold after documentation is received. VWR will not lift restrictions for residential shipping addresses.

-Additional Documentation May be needed to purchase this item. A VWR representative will contact you if needed.
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 1-800-932-5000.
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