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Micro control valves
Supplier: Trajan Scientific and Medical
Micro control valves provide precision metering and on-off control of gas flows. They are designed specifically for chromatography applications and used at elevated temperatures from high vacuum to medium pressure.
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Avantor® Hichrom PEEKsil™, Back Pressure Regulator
Supplier: HICHROM
Avantor® Hichrom, Back pressure regulator, Pressure: 5,17 bar
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Non return valves, BOLA
Supplier: Bohlender
These non return valves are made from PTFE, with nuts made from glass fibre reinforced PTFE for connecting tubing or tubes.
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Thermostatic mixing valve for eye showers
Supplier: BROEN
Thermostatic mixing valve for eye showers designed for delivering tepid water (20 to 25 °C).
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Vacuum check valve and positive connector, Nalgene®
Supplier: Thermo Fisher Scientific
These vacuum check valves with positive connector are designed to prevent back pressure with aspirator-type vacuum pumps.
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Non-return valves
Supplier: KARTELL
PP, translucent. Prevent pressure loss and backflow. Maximum working pressure 2 bar and minimum working pressure 0,07 bar at room temperature (20 °C).
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Non-return valve
Supplier: BRAND
HDPE, transparent. Prevents backflow. With FKM valve disc not suitable for pressure applications.
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Non return valves
Supplier: VITLAB
These non return valves are made from HDPE.
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Non-return valves, SP Bel-Art
Supplier: Bel-Art Products, a Part of SP
PP valve, translucent with neoprene valve disk. Stops reverse flow of liquid when pressure is interrupted.
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Non return valves
Supplier: BURKLE
Translucent PP retaining valves with embossed directional arrow or printed in black. With tapered ends. Various uses.
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Non return valve, PP
Supplier: BURKLE
Valve made of PP and POM, seal made of EPDM, springs made of stainless steel 1.4401.
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Back pressure regulator
Supplier: VICI JOUR RESEARCH
This regulator installs on the detector drain line and prevents bubble formation in the flow cell during outgassing. It has an adjustable back pressure from 0 to 20 bar (15 to 300 psi) without disconnecting from the system. Other sizes available.
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Non-return valve
Supplier: LENZ LABORGLAS
DURAN®, borosilicate glass, clear. Prevent pressure loss or backflow. Simple design, cannot be dismantled.
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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.
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Inline check valves, standard 1/4-28, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
These standard inline check valves are made from gold plated stainless steel.
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Non return valves
Supplier: SEMADENI
These non return valves are made from PP.
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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.
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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.
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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.
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Air valve anti-return
Supplier: QVF LABORTECHNIK
Air valve anti-return, cone size 14/23 NS, with sidearm, Borosilicate glass 3.3
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Inline check valves, quick-stop luer, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
The Quick-Stop Luer check valve assembly is specifically designed to provide inline Luer connect/disconnect convenience while avoiding spills. It is made from biocompatible PEEK with gold-plated stainless steel spring.
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Non return valves, Azlon®
Supplier: DWK LIFE SCIENCES
Designed for use in vacuum lines and fluid handling systems.
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Back pressure regulators, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
Back pressure regulator assemblies are designed to create incremental back pressures ranging from 5 to 1000 psi (0,3 to 69 bar). These biocompatible and stainless steel back pressure regulator assemblies are available complete with a replaceable, factory pre-set cartridge (except the 5 and 20 psi (0,3 to 1,4 bar versions).
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Inline check valves, non-metallic ¹/₄-28 and 10-32, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
These biocompatible PEEK and perfluoroelastomer inline check valves are designed for applications where low flow path volume is critical, such as delivery to lab-on-a-chip, single-cell analysis and micro- or nano-LC post-column derivatisation.