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HN49U Series Union Bonnet Needle Valve

Brand: Hex Valve
Does not ship to OH, United States
The HN49U is a severe service union-bonnet needle valve that features a one-piece forged body and grafoil packing, all designed to handle the extreme conditions of high pressure and high temperature services such as those in super-heated steam power plant services. 

With a multitude of configurations available, you will find a model to meet your varying needs. 

The HN49U is produced in 6 mm and 10 mm orifice sizes, and can be provided with tube socket weld or 4.5 mm butt-weld end connections. 

To withstand the extreme temperatures this valve is designed for, the HN49U can be specified in either 316H or F91 materials.
Features
  • Construction: One-piece forged body design. Accidental valve disassembly prevented by union body construction. Packing able to be adjusted in the open position. 
  • Packing Materials: Grafoil packing standard to handle temperatures up to 1200°F (648,9°C). 
  • Ratings: 10,000 psig @ 100°F (689,5 bar @ 37,8°C); 3,500 psig @ 1200°F (241,3 bar @ 648,9°C)
  • Backseated Bonnets with Packing Below the Stem Threads: 
  • Standard Option: Panel mounting standard on all HN49U valves. 
  • Stem Design: Non-Rotating Ball Tip Stem provides for repeatable, leak-tight shutoff. Because the ball stops rotating when it contacts the seat, further torque turns the stem, but not the ball tip, protecting the stem tip from damage.
The HN49U is a severe service union-bonnet needle valve that features a one-piece forged body and grafoil packing, all designed to handle the extreme conditions of high pressure and high temperature services such as those in super-heated steam power plant services. 

With a multitude of configurations available, you will find a model to meet your varying needs. 

The HN49U is produced in 6 mm and 10 mm orifice sizes, and can be provided with tube socket weld or 4.5 mm butt-weld end connections. 

To withstand the extreme temperatures this valve is designed for, the HN49U can be specified in either 316H or F91 materials.
Features
  • Construction: One-piece forged body design. Accidental valve disassembly prevented by union body construction. Packing able to be adjusted in the open position. 
  • Packing Materials: Grafoil packing standard to handle temperatures up to 1200°F (648,9°C). 
  • Ratings: 10,000 psig @ 100°F (689,5 bar @ 37,8°C); 3,500 psig @ 1200°F (241,3 bar @ 648,9°C)
  • Backseated Bonnets with Packing Below the Stem Threads: 
  • Standard Option: Panel mounting standard on all HN49U valves. 
  • Stem Design: Non-Rotating Ball Tip Stem provides for repeatable, leak-tight shutoff. Because the ball stops rotating when it contacts the seat, further torque turns the stem, but not the ball tip, protecting the stem tip from damage.
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Specifications

Brand

Enclosure, Body Material

  • 316H Stainless Steel
  • Steel (F91)

Orifice Size

  • 0.236”
  • 0.394” (10 mm)

Packing Material

  • Grafoil [0° to 648.9° C (32° to 648.9° F)]

Pressure Rating

  • psig: 10,000 (kPa: 68,950, bar: 689.5) at 37.8° C (100° F)
  • psig: 3,500 (kPa: 24,132, bar: 241.3) at 648.9° C (1,200° F)

Welded Inlet

  • 3/4” Tube Socket Weld End

Welded Outlet

  • 3/4” Tube Socket Weld End
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