You searched for: Non Return Valves

Supplier: VWR International

This polypropylene non-return valve protects tubing and vacuum systems from back flow when pressure falls in the system.

Supplier: HICHROM LIMITED

Supplier: Ace Glass

Polypropylene connectors, two-way or three-way, with PTFE valve and serrated tubulations

Supplier: Ace Glass

This universal tubing connector body includes an integral linear valve designed to provide flow control while connecting large O.D tubing to small O.D tubing.

Supplier: Ace Glass

Similar to the Variable Bore Tubing Connector (89077-438), except this Two-Way Tubing Connector Valve features a single Tefzel control valve rated at 500psi

Supplier: Ace Glass

This eight-way tubing connector valve is used for applications where multiple channels are necessary for distributing reagents, solvents, or buffers to chromatography columns

Supplier: Ace Glass

This PTFE valve is used with NPT fittings.

Supplier: Ace Glass

This three-way tubing connector valve is used for applications where stream switching, reagent switching, sample removal, or sample injection is desirable

Supplier: Restek

Supplier: Restek

Supplier: Restek

PerformancePLUS Check Valve Housing, for HPLC Systems, Model No: 1515, 1525, 510, 515, 525, 600, 610

Supplier: Restek

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

Supplier: Restek

PerformancePLUS Check Valve Cartridge, for HPLC Systems, Model Number: 1515, 1525, 2690, 2695, 2795, 510, 515, 600, 610

Supplier: Restek

Supplier: Optimize

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

Supplier: Upchurch Scientific

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

Supplier: Upchurch Scientific

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, making them highly resistant to chemicals. The blue colorant used in some valve configurations has proven not to leach out with common HPLC solvents.

Supplier: Restek

Prime/Purge Valve Repair Kit for Prime/Purge Valve, Includes: soft seal (2), PTFE O-ring (2), 7/32 hex key

Supplier: DWK Life Sciences (KIMBLE)

One-Way valves are designed for use in making connections between the tubing and the end fittings of CHROMAFLEX® columns.

Supplier: Upchurch Scientific

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

Supplier: Restek

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

Supplier: Restek

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

Supplier: Upchurch Scientific

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

Supplier: Restek

Inlet Check Valve for HPLC Systems, Model Number: Int. 4000, 1, 10, 2, 200 Series, 250, 3, 3B, 4, 400, 410, 620, Series 200 Micropump

Supplier: Restek

Supplier: Upchurch Scientific

Connect standard 1/4-28 Inline Check Valves to any 1/4-28 flat-bottom port to limit flow to one direction

Supplier: Restek

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

Supplier: Upchurch Scientific

Upchurch Scientific® Nonmetallic 1/4-28 Inline Check Valves provide excellent backflow protection for sensitive equipment along with outstanding chemical resistance guaranteed by the PEEK™ polymer and perfluoroelastomer construction

Supplier: Upchurch Scientific

The ³/₁₆" ruby ball will quickly open and depressurize the reservoir before the mobile phase can rise up the tubing.

Supplier: Chemglass

These drain valves are suitable for filter reactors having volumes from 0 - 14 l.