HP 723 High Purity - Brass Barstock Regulator

Model HP723

Model HP723 ultra high-purity line regulator for gas purity levels up to grade 5.0.


Model HP723 is a stainless steel diaphragm single-stage pipeline regulator for pipeline and other applications up to 3000 psig inlet pressure. Model HP723 is available in both brass barstock and chrome-plated brass barstock (HP723C) with various delivery pressures, inlet fittings, accessories and other options for a customized regulator to meet specific requirements.


  • 1-11/16"- 316L stainless steel diaphragm eliminates contamination from diffusion or out-gassing
  • One-piece encapsulated seat design with 10 micron sintered internal filter to protect the PTFE Teflon® seat from particulate contamination
  • 2” stainless steel dual scale gauge (psi/bar)
  • Ergonomic ABS plastic knob for improved grip
  • Brass models have brass barstock body, bonnet and fittings; Chrome-plated brass models have chrome-plated brass barstock body, bonnet and fittings for years of dependable service
  • Maximum inlet 3000 psig
  • Designed to 1 x 10-9 cc/sec inboard helium leak rate to maintain gas purity levels
  • Equipped with an external relief valve
  • Front or back panel mountable

Typical Applications

  • High-purity gas, research sample system gas and process analyzer gases applications
  • Gas chromatography
  • EPA protocol gases
  • Laser gas systems
  • Emission monitoring systems


Warning -

Cancer and Reproductive Harm -