400 Series Standard Needle Valves with Hard Seat
100% helium leak tested to 1 x 10-4 ml/s for guaranteed performance and reliability. Blow-out proof stem provides a secondary stem seal in the full open position. FKM o-ring seal and PTFE back-up ring below the stem threads protect from corrosion and galling. PTFE or Graphite packing optional (certain NPT sizes only).
Type | : | Needle Valve |
Orifice Diameter | : | 0.187 in |
Valve Type | : | Male-Female Angle |