Union Bonnet Needle Valves, NU and NUH Series

Feature a one-piece forged body

NU and NUH Series Union Bonnet Needle Valves feature a one-piece forged body with a working pressure of up to 10,000 psig. The union bonnet design prevents accidental disassembly. 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

One-piece forged body
Accidental valve disassembly disabled by union bonnet construction
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 movement of the rising, non-rotatingstem minimizes packing abrasionand reduces the friction between the seat and the tip
Every valve leak tested with nitrogen or compressed air (NU Series) at the maximum allowable working pressure or with water (NUH Series) at 1.1 times the maximum allowable pressure

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