Union Bonnet Needle Valves,NV5 Series





描述

Every valve we produce undergoes rigorous testing to ensure it complies with our quality standards.
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Union Bonnet Needle Valves,NV5 Series
NV5 Series union bonnet needle valves feature integrated forged bodies. The standard NV5 Series has a maximum working pressure of 6000 psig, while the high-pressure NV5H Series reaches up to 10000 psig.With a combined bonnet structure, the valves prevent accidental disassembly. They possess back-sealing function at fully open position. A wide selection of packing materials, port types and sizes is available.
Features
One-piece forged body
Roll-formed stem threads and hardened sealing surface of valve plug for extended service life
Accidental valve disassembly disabled by union bonnet construction
Stem threads above packing prevent lubricant contact with process media
Safety back seating seals in fully open position
Two-piece stem design. The valve plug only moves up and down during operation, reducing packing wear per stroke
Panel mounting available
Steady and durable fastening of the handle by double lock-pins
Every valve leak tested with nitrogen or compressed air at the maximum allowable working pressure or with water at 1.1 times the maximum allowable pressure
A variety of packing materials are available to meet different operating temperature ranges:PTFE packing:-65℉ to 450℉ (-54℃ to 232℃)、PEEK packing: -65℉ to 500℉ (-54℃ to 260℃)、Graphite packing: -65℉ to 1200℉ (-54℃ to 649℃)
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