NB Series Needle Valves

Features

• Maximum working pressures: Stainless steel 6000 psig (414 bar)
• Working temperature: PTFE:-65 °F to 450 °F (-54°C to 232 •C)  PEEK: -65 °F to 600 °F (-54°C to 315°C)
• Leak-tight performance testing for every valve wth nitrogen at the maximum working pressure

Grafoil Packing Information

Grafoilis a high temperature packing material that requires a load on the material to generate a seal.In air, Grafoil maximum temperature is 973 °F (523°C) in steam, Grafoil goes up to t he maximum temperature of 1,200 °F (648°C ). Grafoil packing is not for use with pneumat ic actuating valves.

Valve Ratings With Nai-Lok End Connections

Valve ratings may be limited to the maximum working pressure of connective pipe and tubing. For valve rating with NAI-LOK tube fitting end connections, refer to NAI-LOK catalog providing suggested working pressures in various tubing OD, wall thicknesses, and materials.

Valve Ratings With Optional PEEK Packing

SS316 and C276 valve with PEEK packing is limited to maximum 600 ‘F (315 ‘C) rating ; Alloy 400 valve with PEEK packing is limited to maximum 500 °F (260 •C) rating.