NB Series: Working pressure up to 6000 psig

◎ Cold drawn bar as body
◎ Two-piece stem design: Upper stem threads cold rolled, and lower stem hardened for high strength and smooth operation
◎ Upper stem thread lubricant isolated from system media
◎ Linear instead of rotary motion of the rising, non-rotating stem minimizes packing abrasion and reduces the friction between the seat and the tip
◎ 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
◎ Every valve leak tested with Nitrogen or compressed air at the maximum allowable working pressure
◎ Working pressure up to:
Stainless steel: 6000 psig (414 bar)
Alloy C-276: 6000 psig (414 bar)
Alloy 400: 5000 psig (345 bar)
Titanium: 3500 psig (241 bar)
Brass: 3000 psig (207 bar)
◎ Working temperature:
PTFE: -65°F to 450°F(-54°C to 232°C)
PEEK:-65°Fto 500℉(-54°Cto 260°C)
Graphite:-65’F to 1200°F(-54’C to 649°C)

1. Graphs are based on graphite packing.
2. Temperature rating is limited to 200°F (93°C) max. with PCTFE stem tip (soft tip).
3. Contact us for curve graph of other materials.