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Instantly add the HN49U Series Union Bonnet Needle Valve and 50,000+ more product series to your store or catalog  
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Hex Valve Union Bonnet Needle Valve, HN49U Series

HN49U Series Union Bonnet Needle Valve

Brand: Hex Valve
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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.

1 - 8 of 8 Part Numbers
HN49UA8I1
HN49UA8I1
  • Orifice Size - 0.24" (6 mm)
  • Body Material - 316H Stainless Steel
  • Inlet / Outlet Type - 0.17" (4.5 mm) Wall BWE
HN49UA8IE
HN49UA8IE
  • Orifice Size - 0.24" (6 mm)
  • Body Material - 316H Stainless Steel
  • Inlet / Outlet Type - TSW
HN49UAFI1
HN49UAFI1
  • Orifice Size - 0.24" (6 mm)
  • Body Material - F91 Steel
  • Inlet / Outlet Type - 0.17" (4.5 mm) Wall BWE
HN49UAFIE
HN49UAFIE
  • Orifice Size - 0.24" (6 mm)
  • Body Material - F91 Steel
  • Inlet / Outlet Type - TSW
HN49UB8I1
HN49UB8I1
  • Orifice Size - 0.39" (10 mm)
  • Body Material - 316H Stainless Steel
  • Inlet / Outlet Type - 0.17" (4.5 mm) Wall BWE
HN49UB8IE
HN49UB8IE
  • Orifice Size - 0.39" (10 mm)
  • Body Material - 316H Stainless Steel
  • Inlet / Outlet Type - TSW
HN49UBFI1
HN49UBFI1
  • Orifice Size - 0.39" (10 mm)
  • Body Material - F91 Steel
  • Inlet / Outlet Type - 0.17" (4.5 mm) Wall BWE
HN49UBFIE
HN49UBFIE
  • Orifice Size - 0.39" (10 mm)
  • Body Material - F91 Steel
  • Inlet / Outlet Type - TSW
1 - 8 of 8 Part Numbers

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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

Documentation

Data Sheets

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