HP 701 High Purity Chrome Plated Brass Regulator

Model HP701EN-125-660 Regulator


High-purity electroless nickel-plated regulator


Model 701EN is a single-stage regulator with an electroless nickel plated brass body for primary pressure control of corrosive and acid forming gases or gas mixtures. Harris strongly recommends the use of a 316 SS cross purge assembly for highly corrosive and acid forming gases. The use of a cross purge will eliminate moisture that will result in acid corrosion inside the regulator. Typical applications include hydrogen chloride, hydrogen bromide, hydrogen sulfide, boron trichloride, dichlorosilane and chlorine.


  • 2" 316L stainless steel diaphragm eliminates contamination from diffusion or outgassing
  • One-piece encapsulated seat design with 10 micron sintered internal filter to protect the PTFE Teflon® seat from particulate contamination
  • Designed to 1.0 x 10-8 cc/sec helium leak rate to maintain gas purity
  • Electroless nickel-plated brass body, bonnet and fittings
  • 2” 316 stainless steel gauges (psi/bar)
  • Conforms to CGA E-4 standard for gas pressure regulators


Warning -

Cancer and Reproductive Harm -


What's Included

  • One Model HP701EN Regulator

Warranty Information

  • 90 Days