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Différents types de clapets anti retour peuvent, selon le produit, réguler les niveaux de pression des liquides et des gaz dans les systèmes de débits. Ces vannes permettent des connexions entre des tubes de différentes longueurs et des points de raccordement. Ces clapets peuvent être utilisés pour diverses applications, mais toutes ont été conçus pour assurer une sécurité et une efficacité maximales, en particulier lorsque la pression est très importante.
Safety drum vents
Supplier: JUSTRITE MANUFACTURING
These safety drum vents provide automatic pressure relief for drums between 0,20 bar but less than 0,55 bar. Depending on the model, vacuum relief is either automatic (on horizontally installed vents) or manual (on vertically installed vents).
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Overpressure relief valves, open
Supplier: Welch by Gardner Denver
Small flange valve, open type, made of nickel-plated aluminium.
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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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Valve anti-retour
Supplier: Brand
En PE-HD transparent. Empêchent reflux. Clapets de soupape en FKM déconseillés lors de surpressions.
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Pressure reducing valve for Broen showers
Supplier: BROEN-LAB
Pressure reducing valve 2,0 for Broen showers, 0,5 - 8,5 bar
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Replacement kits for Socorex® syringe
Supplier: Socorex Isba
Replacement kits for the valve assembly are supplied in a dedicated bag with each Socorex® self-refilling syringe.
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Manual, solenoid and motor valves
Supplier: Cytiva
Range of manual and automated valves to meet a variety of performance requirements. They are designed for biocompatibility and years of reliable service, each may be inserted into the flow path without causing unnecessary mixing or sample dilution.
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Syringe Valve Assembly Kit, 2 ml, SOCOREX® DOSYS™
Supplier: DWK Life Sciences
Kit includes 1 spring, 2 balls, 2 washers for valve, and barrel washer.
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Non return valves
Supplier: VITLAB
These non return valves are made from HDPE.
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Back Check Valves
Supplier: BD Medical
DEHP or natural rubber latex are not part of the material formulation.
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Sampling valves
Supplier: Merck
The sampling valves are used for sterile sampling of water or other final products in the pharmaceutical industry.
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Robinet à pointeau de rechange
Supplier: witeg Labortechnik
Spare needle valve, PTFE, red for high vacuum stopcocks WITAFLO, 3 mm hole
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Valves à bille
Supplier: SEMADENI
Housing and ball made of PP, ball seal made of PTFE. These ball valves has a easy running, strong industrial design.
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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.
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Clapets anti-retour
Supplier: Bel-Art Products, a Part of SP
Valve en PP translucide avec disque en néoprène. Arrêt du reflux lorsque la pression s'interrompt.
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Ball valves
Supplier: SEMADENI
Three way ball valve with PP body and PTFE tips with total length of 65 mm.
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Micro-splitter valves, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
Conçue pour séparer et contrôler avec précision un écoulement à faible débit d'une source unique.
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Robinet à pointeau pour bouchon de burettes latérales
Supplier: witeg Labortechnik
Needle valve for burettes, lateral with PTFE plug, 0 - 2,5 mm bore
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Rotary valves with cap connection
Supplier: OMNIFIT
Valves are constructed from PTFE with a PCTFE rotor and have a 1,5 mm bore size. They accept tubing sizes between 0,5 and 4 mm Ext.Ø. and are pressure rated to 50 psi.
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Rotary valves, high pressure
Supplier: OMNIFIT
The high pressure manual rotary valves are made from PTFE with a PCTFE rotor with a bore size of 0,8 mm making them ideal for pressure applications up to 500 psi. They are available in four and five port versions. All ports are 1/4"-28 UNF flat-bottom and will accept any 1/4"-28 UNF male fitting. These valves are mountable using the pre-drilled M3 mounting holes.
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Pressure relief valves
Supplier: VARIAN
Valves made from stainless steel are two-position with six-port. It is manually operated with three-way switching.
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Soupapes de sécurité de surpression et anti-retour
Supplier: QVF LABORTECHNIK
Air valve anti-return, cone size 29/32 NS, with sidearm, Verre borosilicaté 3.3
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Check Valve
Supplier: NEUBERT VOLUME GLASSWAERE
Loose closure with variable weight check valve.
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Robinet de rechange pour bonbonnes
Supplier: SEMADENI
½” universal valve made from PP, resistant to acids, alkalis and solvents.
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Clapets anti-retour en ligne 1/4-28 standard, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
Clapets anti-retour en ligne 1/4-28 standard, acier inoxydable plaqué or
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Non return valves
Supplier: SEMADENI
These non return valves are made from PP.
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Clapets antiretour intégrés pour cartouche, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
Les clapets antiretour intégrés pour cartouche sont conçus pour limiter l'écoulement dans une direction et créer une faible pression de fissuration. Le positionnement idéal de ces clapets se situe sur le côté de l'effluent de la colonne pour empêcher les agents de dérivatisation post-colonne de s'écouler en marche arrière et d'empoisonner la colonne si la pompe de la phase mobile HPLC a été arrêtée.
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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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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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Clapet en ligne Quick-Stop à embout Luer-Lock, Upchurch Scientific®
Supplier: UPCHURCH SCIENTIFIC
L'ensemble clapet anti-retour Luer Quick-Stop est spécialement conçu pour offrir une connexion/déconnexion Luer en ligne pratique tout en évitant les déversements. Il est fabriqué en PEEK biocompatible avec un ressort en acier inoxydable plaqué or.