Stopcocks and Valves

Zur bestmöglichen Nutzung von Kanistern bietet CHEMSOLUTE® praktische Auslaufhähne.

• Auslaufgeschwindigkeit der Auslaufhähne: breiter Auslauss ca. 5 l/min, schmaler Auslass ca. 1,5 l/min

Maximum safety for HPLC solvent supply. The integrated air valve (B) blocks hazardous vapours and cleans the inflowing air (M) from dust and dirt particles.

• Protection against escaping solvent vapours
• Solvents (L) und and mixtures remain clean and stable
• No twisted tubing, easy container exchange
• No air intake in to the HPLC system
• Reproducible analytical results through stable mobile phase
• Use the supplied blind plugs to tighten connections which are temporarily inactive or not in use

• Air valve (B) with PTFE filter (G) and Luer-Lock adapter (A)
• Valve membrane (H) optimized for analytical and preparative flow rates
• Improved PFA fittings (C)
• Body (D / I) made of medical grade PTFE, food safe, FDA conform
• Screw cap (F) made of PPS, autoclavable / sterilisable up to 200 °C
• PTFE and PPS with excellent chemical resistance and flammability classification V-0 (UL-94)
• Insertion label (E) for individual inscription
• Improved FKM seal (J) for stable fit on any bottle
• Improved ergonomics and construction (K)

• Luer Lock adapter
• PTFE Filter
• Valve membrane blocks vapours and opens at negative pressure
• It is recommended to replace the valve every 6 months
• With change indicator and labelling field for timely change

Acc. to DIN 12541-1 and in addition to DIN standard, with PTFE plug and screwthread retaining device, one straight bore, leakage rate acc. to DIN 12540-1.

Lid with integrated ventilation openings and service life indicator. The filling of activated carbon is protected by two porous membranes made of PE. This allows an unobstructed flow of exhaust air, solvents are adsorbed by the activated carbon and only filtered air streams out.

Acc to DIN 12541-1 and in addition to DIN standard. With solid glass plug and retaining device. Straight bore. Leakage rate acc. to DIN 12540-1.

For the safe withdrawal of solvents. Screw caps, with freely movable insert made of PTFE, with PFA fittings for capillaries and an air valve. For maximum efficiency, we recommend that the vent is changed every 6 months.
Scope of suppy:
Safety Cap, air valve, change indicator, PFA fittings, PFA blind plug, labelling field

Red/yellow. With connecting thread UNF ¼" 28G. Filter membrane made of PTFE/PP with a porosity of 1 µm and integrated non-return valve made of silicone. With service life indicator.

• Acc. to DIN 12554 and in addition to DIN standard
• Leakage rate to DIN 12540-1
• With solid glass plug or PTFE plug and screwthread retaining device

Screw cap for thread GL 45 made of PPS, freely turnable distributor body made of PTFE with female threads: UNF ¼" 28 G for connecting capillary tubing (O. D. 1.6, 2.3 or 3.2 mm) or NPT 1/8" for a hose connector for flexible tubing with I.D. 6.4 or 9 mm, GL 14 for connecting a b.safe exhaust filter (not included).

Scope of supply:
Connections: UNF ¼"" 28G, NPT 1/8"", GL 14, Fittings, hose connector, blind fittings

For 250 µl RN needle syringes and larger. Port diameter 1.5 mm, Inert Gas Sampling Valve 1 mm.

Straight valves with spindle (PTFE) and integrated fine thread enable very fine adjustment of the valve opening.

• Media only come into contact with Duran^® glass and PTFE
• Unscrewing protection prevents absolute unscrewing of the valve pin

According to ISO 9002.DOT39 and EN12205.
Control valve not included, please order separately.

Three-way stopcocks (Czako) acc. to DIN 12563. Angled bore 120°, with solid glass or PTFE plug. Leakage rate to DIN 12540-1.

2-way- or 3-way stopcock system for infusion therapy and monitoring, for all current pressure infusion systems.

• Stopcock 180° or 360° turnable
• Luer-Lock port
• PVC and latex free

With embossed directional arrow or printed in black.

• Conical spouts
• Resistant to compression max. 4 bar
• Operating temperature 0 to 40 °C
• With PP valve ball, on request also with ball made of stainless steel or PTFE

For Bürkle pumps and discharge stopcocks.

For StopCock spigots and ball valves.

• Valve lever made of PP
• With integrated hose nozzles
• Good chemical resistance

Butterfly design. Housing made of stainless steel with fluoroelastomer seal. Two Buna-N rings act as rotary shaft seals. Helium leak-tested. Leak rate 1 x 10^-6 mbar x l/s. Excellent throughput.

Made of DURAN^® tubing. Smooth PTFE plug spindle, with retention device to avoid accidental dismantling. PP screw cap and retention device. Operating temperature -20°C to 150°C. Needle-valve stopcocks can be used for accurate dispensing and fit perfectly to glass apparatus.

Made of DURAN^® tubing. With conical joint and PTFE stopcock.

When laboratory ground devices are used under vacuum or/and slight overpressure, the use of this combined overpressure safety valve can be recommended. These valves act as immediately closing safety valve under vacuum and they allow under overpressure the visual control of the bubble formation in the blocking liquid. The real sealing is effected by a special designed spherical ground joint (cup and ball) on which an adjustable spring power acts. It is supported by a free to chose blocking liquid which should be higher viscous for vacuum operations. The sealed climbing tube at the spherical ground cup serves as a guide and prevents that the liquid climbs back into the apparatus.

For burette Economy.

Stopcock with facetted tip, with solid NS plug, PTFE plug or PTFE spindle, material: borosilicate glass 3.3.

With PTFE key and screwthread retaining device. With two oblique bores. Leakage rate acc. to DIN 12540-1.

With straight side arms or parallel side arms and hollow NS glass plug.
Leakage rate acc. to DIN 12540-1.

One-way, acc. to DIN 12545 / DIN 12554 and in addition to DIN standard, with right-angled side arm and hollow glass plug. Leakage rate to DIN 12540-1.