GC Internal sample injectors W and UW Type Valco internal sample injectors are designed for injecting samples that are too small for conventional loop injection. Since the internal sample "loop" is actually an engraved slot on the rotor sized to contain the specified amount of sample, available sample sizes range from .06 µl to 2 µl, depending on the valve model.

Application

Click on the schematic   to view an application

Specifications / Product numbers

A complete valve product number includes information about the specific valve, actuator, and mounting hardware. Locate the valve with desired specifications in the chart below and select it to continue to the next step in arriving at the correct product number.
Jump to the valve selection chart.

Actuation

Valves can be actuated manually or automated with pneumatic or electric actuators. Read more about actuators.

Standoffs

GC valves usually require a standoff - an extension between the valve and actuator which allows the valve to be mounted in the heated zone while the actuator or handle remains outside at ambient temperature. Standoffs are available in lengths of 2", 3" 4", and 6".

Options

Valve selection chart

For specific product numbers, select a valve specification below.

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Specs	Fittings	Port size	Sample size
175°C max  1000 psi liq  Nitronic 60 valve body   Valcon E rotor	1/32"  (W type)	0.25 mm  (.010")	.06 µl	Select
			.1 µl	Select
			.2 µl	Select
			.5 µl	Select
	1/16"  (W type)	0.40 mm  (.016")	.06 µl	Select
			.1 µl	Select
			.2 µl	Select
			.5 µl	Select
	1/16"  (UW type)	0.75 mm  (.030")	.2 µl	Select
			.5 µl	Select
			1 µl	Select
			2 µl	Select
	1/8"  (UW type)	0.75 mm  (.030")	.2 µl	Select
			.5 µl	Select
			1 µl	Select
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