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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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Image Unavailable-SGEA1236091

Micro control valves

Beskrivelse: 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.
Artikkenummer: SGEA1236091
UOM: 1 * 1 Items
Produsent: Trajan Scientific and Medical
Product Image-HICHHI-128

Avantor® Hichrom PEEKsil™, Back Pressure Regulator

Beskrivelse: Avantor® Hichrom, Back pressure regulator, Trykk: 5,17 bar
Artikkenummer: HICHHI-128
UOM: 1 * 1 Items
Produsent: Avantor
Product Image-BOHLE680-27

Non return valves, BOLA

Beskrivelse: These non return valves are made from PTFE, with nuts made from glass fibre reinforced PTFE for connecting tubing or tubes.
Artikkenummer: BOHLE680-27
UOM: 1 * 1 Items
Produsent: Bohlender
Product Image-118-0137

Thermostatic mixing valve for eye showers

Beskrivelse: Thermostatic mixing valve for eye showers designed for delivering tepid water (20 to 25 °C).
Artikkenummer: 118-0137
UOM: 1 * 1 Items
Produsent: BROEN-LAB
Product Image-NALG6120-0010

Vacuum check valve and positive connector, Nalgene®

Beskrivelse: These vacuum check valves with positive connector are designed to prevent back pressure with aspirator-type vacuum pumps.
Artikkenummer: NALG6120-0010
UOM: 1 * 6 Items
Produsent: Thermo Fisher Scientific

Environmentally Preferable


Product Image-229-3331

Tilbakeslagsventil

Beskrivelse: PP, gjennomskinnelig. Motvirker trykktap og tilbakestrøm. Maksimalt driftstrykk 2 bar, minste driftstrykk 0,07 bar ved romtemperatur (20 °C).
Artikkenummer: 229-3331
UOM: 1 * 10 Items
Produsent: KARTELL
Product Image-229-3311

Ventiler uten tilbakestrøm

Beskrivelse: HDPE, transparent. Prevents backflow. With FKM valve disc not suitable for pressure applications.
Artikkenummer: 229-3311
UOM: 1 * 1 Items
Produsent: Brand
Product Image-VITL78593

Non return valves

Beskrivelse: These non return valves are made from HDPE.
Artikkenummer: VITL78593
UOM: 1 * 10 Items
Produsent: VITLAB
Product Image-BELAH197160000

Non-return valves, SP Bel-Art

Beskrivelse: PP valve, translucent with neoprene valve disk. Stops reverse flow of liquid when pressure is interrupted.
Artikkenummer: BELAH197160000
UOM: 1 * 6 Items
Produsent: Bel-Art Products, a Part of SP
Product Image-BURK8540-0012

Non return valve, PP

Beskrivelse: Valve made of PP and POM, seal made of EPDM, springs made of stainless steel 1.4401.
Artikkenummer: BURK8540-0012
UOM: 1 * 1 Items
Produsent: BURKLE
Product Image-229-0136

Non return valves

Beskrivelse: Translucent PP retaining valves with embossed directional arrow or printed in black. With tapered ends. Various uses.
Artikkenummer: 229-0136
UOM: 1 * 1 Items
Produsent: BURKLE
Product Image-271-5143

Air valve anti-return

Beskrivelse: Air valve anti-return, cone size 14/23 NS, with sidearm, Borsilikatglass 3.3
Artikkenummer: 271-5143
UOM: 1 * 1 Items
Produsent: QVF LABORTECHNIK
Image Unavailable-JOURJR-BPR3

Baktrykkregulator

Beskrivelse: Denne regulatoren monteres på detektorens avløpsledning og forhindrer at det dannes bobler i flytcellen under avgassing. Den har et justerbart baktrykk på mellom 0 og 20,5 bar (300 psi) uten å måtte kobles fra systemet. Andre størrelser er tilgjengelige.
Artikkenummer: JOURJR-BPR3
UOM: 1 * 1 Items
Produsent: VICI JOUR RESEARCH
Product Image-229-3591

Non-return valve

Beskrivelse: DURAN®, borosilicate glass, clear. Prevent pressure loss or backflow. Simple design, cannot be dismantled.
Artikkenummer: 229-3591
UOM: 1 * 1 Items
Produsent: Lenz Laborglas GmbH & CO.KG
Product Image-554-3059

Inline cartridge check valves, Upchurch Scientific®

Beskrivelse: 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.
Artikkenummer: 554-3059
UOM: 1 * 1 Items
Produsent: UPCHURCH SCIENTIFIC
Product Image-REST26401

Valves for HPLC

Beskrivelse: These valves have low internal volumes and are rated to 15000 psi. They feature a two-piece stem assembly in which the rotating upper shank is coupled through a ball joint to a static lower stem.
Artikkenummer: REST26401
UOM: 1 * 1 Items
Produsent: Restek
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