Screwed Bonnet Needle Valves, NB Series

Feature a cold-drawn bar stock body with high working pressures

NB Series Screwed Bonnet Needle Valves feature a cold-drawn bar stock body and support pressures up to 6,000 psig (414 bar). The two-piece stem design includes cold-rolled upper stem threads and a hardened lower stem for strength and smooth operation. The upper stem thread lubricant is isolated from system media. The non-rotating lower stem moves linearly up and down instead of rotating, minimizing packing abrasion and reducing friction between the seat and tip. A safety back-seating seal is provided in the fully open position. Available in various connection types, sizes, and handle colors. The handle is securely fastened with double lock-pins.

Features

Cold drawn bar as body
Upper stem thread lubricant isolated from system media
Safety back seating seal in fully open position
Panel mounting available
Steady and durable fastening of the handle by double lock-pins
Handles of different colors available
Linear instead of rotary motion of the rising, non-rotating stem minimizes packing abrasion and reduces the friction between the seat and the tip
Two piece stem design: Upper stem threads cold rolled and lower stem hardened for high strength and smooth operation

View Screwed Bonnet Needle Valves, NB Series

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