Valves
A variety of valves that can, depending on the product, be used to regulate pressure levels of liquid and gas in flow systems. These valves can be used for making connections between different lengths of tubing and connection points. Liquid and vacuum seals. A plethora of scenarios exist in which these valves can be used, each with a unique purpose and design for maximum safety and efficiency when in use, especially when pressure is of great concern.
Sampling valves
Supplier: Merck
The sampling valves are used for sterile sampling of water or other final products in the pharmaceutical industry.
Expand 7 Items
Precision sampling valves for vials, Mininert®
Supplier: Restek
Mininert® valves are very convenient for repetitive sampling and limit content exposure to the silicon septum. The crimp-top valve for 20 mm ID glassware slides into the neck of the vial.
Expand 8 Items
Spare needle valve
Supplier: witeg Labortechnik
Spare needle valve, PTFE, red for high vacuum stopcocks WITAFLO, 3 mm hole
Expand 1 Items
Non return valves
Supplier: SEMADENI
These non return valves are made from PP.
Expand 1 Items
Inline check valves, standard 1/4-28, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
These standard inline check valves are made from gold plated stainless steel.
Expand 4 Items
Two Position Valve, 6 Port
Supplier: KNAUER
2-position valve with 6 port, 1/16".
Expand 1 Items
Micro valves for LC and GC
Supplier: VICI JOUR RESEARCH
These micro valves for LC and GC has a unique design of the fitting detail which allows a leak-free seal with no potential for rotor damage from overtightening.
Expand 1 Items
Ball Valve for Storage Bottles
Supplier: SEMADENI
½” universal valve made from PP, resistant to acids, alkalis and solvents.
Expand 1 Items
Sigma-Aldrich® HPLC injector, Rheodyne 7725/7725i
Supplier: Merck
The Rheodyne Model 7725 injector allows you to inject 1 μl to 5 ml samples with accuracy and precision.
Expand 1 Items
Inline cartridge check valves, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
Inline cartridge check valves are designed to limit flow in one direction and deliver a low cracking pressure. Ideal placement for these valves would be on the effluent side of the column to prevent post-column derivatisation agents from flowing back and poisoning the column if the HPLC mobile phase pump were to shut down.
Expand 3 Items
Ball valves
Supplier: SEMADENI
Three way ball valve with PP body and PTFE tips with total length of 65 mm.
Expand 1 Items
Ultra-low volume back pressure regulators (BPR), Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
These ultra-low volume back pressure regulators (BPRs) are developed to minimise swept volume, which is especially important for multi-detector applications.
Expand 3 Items
Pressure relief valves, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
Pressure relief valves are ideal for preventing system over-pressurisation. These products protect system components by diverting fluid flow automatically when inline pressure exceeds the set limit.
Expand 3 Items
Shut-off valves, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
Stop a flow stream quickly with these shut-off valves. The bodies are manufactured from either PEEK or ETFE. 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.
Expand 4 Items
Medium pressure 4-port switching valves, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
Upchurch Scientific®, V-101T 3-way flow-switching valve, bulkhead version, 1/16" OD tubing, 1,0 mm thru-hole, 9,7 µl swept volume
Expand 4 Items
Micro-metering valves, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
For fine control of fluid flow rates, these valves can reduce outgoing flow. These needle valves are perfect for use with peristaltic pump fluid transfer applications, mass spectrometry and fraction collection. They can also be used to regulate gas flow in helium sparging lines and as a flow-dependent variable back pressure regulator.