Instrument Valves > Block and Bleed Valves > Hex Valve HB50 HB51

 

Hex Valve HB50 and HB51 Block and Bleed Valves

With a gauge or transmitter threaded into its outlet, the Hex Valve HB50 will allow pressure to be bled or blocked for easy instrument removal. The discharge tube lets the technician direct the high pressure fluid away from himself before changing the instrument.

The HB50 and HB51 combine two functions in one valve to save space. They can be threaded into a primary block valve, like the Hex HG46 for secondary block and bleed functions on multiple instrument applications. HB50 is a fully packed and backseated block valve with a bleed valve, discharge tube, and stem stop. The HB51 uses a bleed screw instead of a bleed valve.

Key Specifications

  • Available in carbon steel or stainless steel constructions
  • Integral metal seat with TFE or Graphite packing; Soft seat optional on HB50 models
  • Non-rotating tip eliminates seat galling and provides bubble-tight shutoff
  • Packing below the thread prevents lubricant washout and corrosion

Specifications, Manuals, and Supporting Literature

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Model Selection Guide

Use this table to find the right model for your application.  Don't see the option you need? Call a Lesman sales specialist at 800-953-7626

Inlet Outlet Seat Packing Catalog Number
Carbon Steel
Catalog Number
Stainless Steel
HB50: Fully packed and backseated block valve with bleed valve, discharge tube, and stem stop
1/2" NPTM 1/2" NPTF Integral TFE HB501S3131412 HB501U3131412
1/2" NPTM 1/2" NPTF Integral Graphite HB501S3131413 HB501U3131413
1/2" NPTF 1/2" NPTF Integral TFE HB501S3331412 HB501U3331412
1/2" NPTF 1/2" NPTF Integral Graphite HB501S3331413 HB501U3331413
1/2" NPTM 1/2" NPTF TFE (Soft) TFE HB502S3131262 HB502U3131262
3/4" NPTM 1/2" NPTF Integral TFE HB501S4131412 HB501U4131412
3/4" NPTM 1/2" NPTF Integral Graphite HB501S4131413 HB501U4131413
3/4" NPTM 1/2" NPTF TFE (Soft) TFE HB502S4131262 HB502U4131262
HB51: Fully packed and backseated block valve with bleed screw
1/2" NPTM 1/2" NPTF Integral TFE HB511S3131412 HB511U3131412
1/2" NPTM 1/2" NPTF Integral Graphite HB511S3131413 HB511U3131413
3/4" NPTM 1/2" NPTF Integral TFE HB511S4131412 HB511U4131412
3/4" NPTM 1/2" NPTF Integral Graphite - HB511U4131413

Videos

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