Valco Combo Valves

A new generation needle and shut-off valve provides screwdriver-adjustable control and positive shut-off without damage to the needle. It is ideal for providing hydrogen and air to an FID, since the flow setting is not changed by turning the valve on and off. It can also be used to supply make-up or combustion gas in a wide variety of applications.

The valve body materials are anodized aluminum or stainless steel, with Viton O-ring seals. Maximum temperature is 100°C, and maximum inlet pressure is 100 psig. All are supplied with Valco 1/16" ZDV fittings.

The standard knob is silver-colored and .62" long. Colored knobs for gas identification are available separately, in two lengths.

Max. flow* Body material Product No.
10 ml/min Aluminum CNV1A10S1
Stainless CNV1S10S1
50 ml/min Aluminum CNV1A50S1
Stainless CNV1S50S1
150 ml/min Aluminum CNV1A150S1
Stainless CNV1S150S1
250 ml/min Aluminum CNV1A250S1
Stainless CNV1S250S1
500 ml/min Aluminum CNV1A500S1
Stainless CNV1S500S1

* At 40 psi He or N2

Optional colored knobs

Color Length Product No.
Green Standard (.62") CNVEKG
Long (1.25") CNVEKLG
Red Standard (.62") CNVEKR
Long (1.25") CNVEKLR
Blue Standard (.62") CNVEKU
Long (1.25") CNVEKLU
Silver Standard (.62") CNVEKS
Long (1.25") CNVEKLS
Black Standard (.62") CNVEKB
Long (1.25") CNVEKLB

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