Print…

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, 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, creating a quality product that will remain independent for years with no need for replacement.


30  results were found

Refine Results Sort by
SearchResultCount:"30"

Sort Results

List View Easy View

Rate These Search Results

Product Image-46600-040

VWR® Non-Return Valves

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.

Certificates


Product Image-76399-160

Avantor® Hichrom, Back Pressure Regulator

Catalog Number: (76399-160)
Supplier: HICHROM LIMITED
Description: Back pressure regulator
Product Image-71000-282

Connectors, with PTFE Plug Valve, Ace Glass Incorporated

Supplier: Ace Glass
Description: Polypropylene connectors, two-way or three-way, with PTFE valve and serrated tubulations

Product available on GSA Advantage® Small Business Enterprise

Product Image-10099-054

PTFE Stopcock Valve, Two Way, Ace Glass Incorporated

Supplier: Ace Glass
Description: This PTFE valve is used with NPT fittings.

Small Business Enterprise

Product Image-89077-464

Eight-Way Tubing Connector Valve, Ace Glass Incorporated

Catalog Number: (89077-464)
Supplier: Ace Glass
Description: This eight-way tubing connector valve is used for applications where multiple channels are necessary for distributing reagents, solvents, or buffers t...

Product available on GSA Advantage® Small Business Enterprise


Product Image-89097-278

Two-Way Tubing Connector Valve, Ace Glass Incorporated

Catalog Number: (89097-278)
Supplier: Ace Glass
Description: Similar to the Variable Bore Tubing Connector (89077-438), except this Two-Way Tubing Connector Valve features a single Tefzel control valve rated at ...

Product available on GSA Advantage® Small Business Enterprise


Product Image-89077-462

Three-Way Tubing Connector Valve, Ace Glass Incorporated

Catalog Number: (89077-462)
Supplier: Ace Glass
Description: This three-way tubing connector valve is used for applications where stream switching, reagent switching, sample removal, or sample injection is desir...

Product available on GSA Advantage® Small Business Enterprise


Product Image-77100-282

OPTI-MAX® Replacement Check Valves

Supplier: Optimize
Description: Each ball and seat set is individually matched to ensure a lock-and-key fit. This guarantees three bubbles/minute or less in the industry standard nit...

Product Image-10058-920

Ball Valve, Swagelok® Shut-Off Gas Valve, Restek

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

Product Image-10853-752

Prime/Purge Valve Repair Kit for Prime/Purge Valve, Restek

Catalog Number: (10853-752)
Supplier: Restek
Description: Prime/Purge Valve Repair Kit for Prime/Purge Valve, Includes: soft seal (2), PTFE O-ring (2), 7/32 hex key
Product Image-53500-796

Upchurch Scientific® Inline Cartridge Check Valves, IDEX Health and Science

Supplier: Upchurch Scientific
Description: Upchurch Scientific® cartridge-style Inline Check Valves are designed to limit flow in one direction

Image Unavailable-21511-232

Shut-Off Valves, Upchurch Scientific®

Catalog Number: (21511-232)
Supplier: Upchurch Scientific
Description: Stop a flow stream quickly with these shut-off valves. The bodies are manufactured from either PEEK or ETFE and both versions feature a PCTFE rotor, m...
Product Image-97055-072

Upchurch Scientific® Nonmetallic ¹/₄-28 Inline Check Valves, IDEX Health & Science

Supplier: Upchurch Scientific
Description: Upchurch Scientific® Nonmetallic 1/4-28 Inline Check Valves provide excellent backflow protection for sensitive equipment along with outstanding chemi...

Product Image-21511-532

Upchurch Scientific® Pressure Relief Valves, IDEX Health & Science

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

Product Image-10853-426

Outlet Check Valve for PerkinElmer HPLC Systems, Restek

Catalog Number: (10853-426)
Supplier: Restek
Description: Outlet Check Valve for PE 200, 4, 250, 400, 410, 620, Similar to PE# 02540197
Product Image-10854-526

Ball Valve, 2-Way, Straight, Parker, Restek

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

Inquire for Price
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.
You must log in to order restricted items. We request that you provide the required business documentation to purchase this product for the first time.

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

  • issued document with your organization's Federal Tax ID Number
  • Government issued document with your organization's Resale Tax ID Number
  • Any other Government ID that includes the business name and address


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 currently unavailable but limited stock may be available in our extended warehouse network. Please call 1-800-932-5000 and a VWR Customer Service Representative will help you.
1 - 16 of 30
no targeter for Bottom