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.
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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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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Plug valves, Parker Balston® shut-off gas valve
Supplier: Restek
These shut-off plug valves work well in any application which requiring throttling or on/off operations.
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Valves and rupture disk tees for sample cylinders
Supplier: Restek
These valves and tees are made from stainless steel or are Sulfinert®-treated.
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Check valves for Shimadzu HPLC systems
Supplier: Restek
Replacement parts for Shimadzu HPLC systems.
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Valves for HPLC
Supplier: Restek
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.
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Needle valve for burettes, lateral, with plug
Supplier: witeg Labortechnik
Needle valve for burettes, lateral with PTFE plug, 0 - 2,5 mm bore
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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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Toggle gas valves, Parker Balston®
Supplier: Restek
These shut-off toggle gas valves are ideal for applications in which instant on/off gas control is necessary.
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Metering gas valves, Parker Balston®
Supplier: Restek
These metering gas valves reduce pressure between sample cylinder and GC injector.
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Valves and loops, Sulfinert® treated
Supplier: Restek
Sulfinert® treated gas sample loops are ideal for samples containing low concentrations of sulphur and other active compounds.
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Ball valve, Parker Balston® shut-off gas valve
Supplier: Restek
Ball valves have a floating ball to assist sealing and to reduce operating torque, and dual seats to provide leak-tight bidirectional sealing. They are rated to 1500 psig at 21 °C and have a maximum temperature of about 177 °C.
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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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Valves for solvent extractors for ASE® 100/200/300 systems
Supplier: Restek
Valves for ASE® 100/200/300 systems.
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Check valves, ASI
Supplier: Restek
Outlet cartridge, sapphire and ruby ball and seat
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Back pressure regulators
Supplier: Restek
Backpressure regulators can improve detector performance by preventing bubble formation in the detector flow cell. They also are useful in post-column reaction lines and between detectors and fraction collectors in preparatory work. Regulators are superior to more specific alternative solutions like small bore tubing, in which pressure varies with flow rate.