Zubehör und Ventile von VICI Valco

Valco Injectors and Valves for GC	Valco Injectors and Valves for HPLC
For over 30 years Valco valves have been the industry standard in gas chromatography. Models are available with 3, 4, 6, 8, 10, 12, or 14 ports, with 1/32", 1/16", 1/8", or 1/4" fittings, and with bore sizes from 0.25 mm (.010") to 4 mm (.156"). In addition, Valco valves offer the widest range of rotor and body materials of any valve available, with alloys and polymer composites capable of meeting virtually any system requirement. All models can be ordered in manual, pneumatic, or electrically actuated versions.	A pioneer and industry leader in products for HPLC,Valco continues to offer the market's most diverse line in terms of options for number of ports,fitting sizes, materials of construction, and actuation. 3, 4, 6, 8,10,12 port versions are offered, with 1/32", 1 /16", or 1/8" fittings. As with the GC line, Valco valves offer the widest range of rotor and body materials of any valves available, with alloys and polymer composites capable of meeting virtually any system requirement. All models can be ordered in manual, pneumatic, or electrically actuated versions.
Valco Multiposition Valves	Diaphragm Valves for GC
One inherent benefit of the Valco conical rotary design is that it allows multiple planes of ports, facilitating a variety of unique multiposition configurations useful for stream selection, column selection, ortrapping. Versions are available for GC and HPLC applications, with 1/16", 1/8", or 1/4" fittings,with bore sizes from 0.40 to 4.0 mm (.016" to.156"). Multiposition valves are available for up to 16 streams (34 ports),with all ofValcöstrademark flexibility in terms of actuation and material options.	A diaphragm valve consists of plungers and ports arranged in a circular pattern, with the plungers controlled bythe reciprocating action of two air actuated pistons. Extremely long lifetime (typically 1,000,000 cycles at ambient temperature; approximately 500,000 cycles at elevated temperatures), very short actuation time (10 milliseconds), minimum internal dead volume, and reliability have made this type of valve very successful in process gas chromatographyfor both sample injection and column switching. Our miniature version features 1/16" or 1/32" zero dead volume fittings, and is the first to offer a 10 port configuration in addition to the 6 port and internal sample 4 port models.
Cheminert Injectors for Nanovolume® HPLC	Cheminert Injectors and Valves for HPLC
New 5,000 psi nanovolume® injectors feature a uniform 100 micron flowpath and port-to-port volume of less than 25 nl. Specially designed fittings accommodate fused silica capillary, 1/32" PEEK, or Valco electroformed nickel tubing. Recent developments also include 10,000 and 20,000 psi nanovolume® injectors and 10,000 psi microbore injectors and switching valves which utilize a patented feedback sealing system to maximize pressure rating and lifetime.	The standard line of Cheminert flat plate valves for HPLC includes 4,6, 8, and 10 port versions plus a through-the-handle front-loading injector and a rearloading injector with a stationary centered injection port designed for use with autosamplers. Also available is a submicroliter injector with injection volume as small as to.01 microliters. Valves feature 1/16" zero dead volume fittings with bore sizes from 0.15 mm (.006") to 0.75 mm (.030"). Most models are available in manual, air, or electrically actuated versions.
Cheminert Injectors and Valves for Low Pressure Applications Cheminert's flat plate two position design offers 4, 6, 8, or 10 port configurations. The design features a choice of Valco 1/16" zero dead volume fittings or 1/4-28 Cheminert internal fittings for 1/16" or 1/8" OD tubing. New to the line is the Model C42, with 1/2-20 fittings and .180" ports. All models are available in manual, air, or electrically actuated versions.	Cheminert Multiposition Valves The rotary flat plate design allows 4, 6, 8, 10, 14, 20, 24, or 26 position stream selection valves, in high pressure and low pressure models. A variety of configurations are available with bore sizes from 0.25 mm (.010") for HPLC column selectors up to 4.6 mm (.180") for applications requiring minimal restriction across the valve. Metal or all-polymeric valves can be ordered, with models available in manual, pneumatic, or electrically actuated versions.
Anwendungsbeispiele für Säulenschaltungen	Anwendungsbeispiele für Multipositionsventile