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NB Series Screwed Bonnet Needle Valve
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. Safety back seating seals in fully open position. Available in various connection types, sizes, and handle colors. The handle is securely fastened with double lock-pins.
Screwed Bonnet Needle Valves NB Series
Bonnet Needle Valve Screwed NB Series
- Working pressure up to 6000 psig
- Two piece stem design: Upper stem threads cold rolled and lower stem hardened for high strength and smooth operation
- Cold drawn bar as body
- 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
- NB Series Needle Valves are standard without panel mounting, add Y to the ordering number for panel mounting.
Features
- 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°F to 500°F (-54°C to 260°C)
Graphite: -65°F to 1200°F (-54°C to 649°C)
When the connection type of valves is FITOK double ferrule tube fitting,the working pressures of the valves are related to the wall thickness of tubing applied. For specific working pressure of the valves.
≅ Please click the page on below to view the data sheet for 6P Series Pipe Fittings
