High pressure cylinder valves, packed needle stem design, for high purity gases - D100

Cylinder Valve with Packed Needle Stem Design for High Purity Gas Applications

Key advantages

Freedom from seizure when used with corrosive gases- gas does not come into contact with the valve operating mechanism.
Positive and effective operation-valve spindle is mechanically linked to the operating hand wheel, which only requires low closing torque.
Long life-valve, all internal parts are replaceable
Adjustable gland packing-in the unlikely event of a leakage occurring past the valve spindle, when opening the valve, rectification is readily achieved by retightening the gland packing nut.
Low internal volume-this is particularly beneficial, when using the valve for hygroscopic, corrosive or high purity gases, where inert gas purging may be necessary before opening after closing the valve.

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Specifications

Connections	According (inter-)national standards and customer’s specifications
Working pressure	200 bar
Nominal flow rate	CV = 0.3
Temperature range	-20 to +65 °c
Body materials	Stainless steel 1.4305 (AISI 303), 1.4435 (AISI 316L), Brass CW617N, ASB CW302G
Leak rate	<1.10-6 m bar L/s
Seat orifice size	3.3 Mm
Marking	π 0029(according to TPED), manufacturing date, 3 stars, valve part number, valve inlet, valve outlet

Dimensional drawings

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