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The company attaches importance to product quality and unremittingly carries out R & D, enjoying the reputation of "excellent quality" in the world. Because of this, we insist on providing customers with meticulous service with first-class quality products and good delivery capacity.

Product

Needle Valves without rotating stem (NR Series)

HANGONG NR series of non rotating stem needle valve, in the application of dangerous gas environment, with other needle valve unparalleled safety, through the clasp to enhance and reduce the stem, so that the valve stem vertical movement in the valve chamber. The maximum working pressure is 3000psi, and the three way valve has been widely used in gas sampling. At the same time, it can connect burst piece to become an insurance of pipeline safety. Product features
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HANGONG NR series of non rotating stem needle valve, in the application of dangerous gas environment, with other needle valve unparalleled safety, through the clasp to enhance and reduce the stem, so that the valve stem vertical movement in the valve chamber. The maximum working pressure is 3000psi, and the three way valve has been widely used in gas sampling. At the same time, it can connect burst piece to become an insurance of pipeline safety.
Product features
Ø  Full open position safety sealing back seat
Ø  Non rotating stem provides repeatable switch
Ø  Brake threads separate from the system fluid to extend the thread life
Ø  O ring seal of valve stem need not be adjusted
Ø  Selectable right angle type, straight through type and three pass type
Ø  Tantalum and niobium alloy technology can be provided
Ø  Reliable stem retraction controls flow stability

Specification size

parameterSpecifications
NameNeedle valve without rotating stem
Connection formEnd connection, internal thread end connection, external thread end connection and thread end connection
Rated pressure2000psi（138bar） CWP
working temperaturePEEK valve stem ：-29℃~93℃
PCTFE valve stem ：-54℃~93℃
caliber1/8 in~1/2 in (British)      3mm~12mm (Metric)
body materialStainless steel 316, brass, tantalum alloy, niobium alloy, alloy 400
sealing materialPEEK；PCTFE



HANGONG Needle valve.pdf