Circle Valve Technologies Inc.
307 Derstine Ave, Suite 204
Lansdale, PA 19446

Toll Free:800-645-6733
Phone: 267-933-6300
Fax: 267-933-6305
Email: [email protected]
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The PR-1 Series is a versatile pressure reducing regulator designed to fulfill a wide range of needs in instrumentation sample systems and other applications such as semiconductor processing gases. Many features of the PR-1 make it ideal for a wide range of applications controlling pressures at low to moderate flows in gas or liquid service. 316L body material is used to facilitate welded connections. Stainless steel caps and adjusting screws prevent atmospheric corrosion and maintain appearance. Enhanced internal body surface finish of better than 25 Ra plus electropolishing allows easier cleaning and potentially less particle contamination in the flow stream.

Five different seat materials, three alternate orifice sizes and seven pressure control ranges with stainless diaphragms offer the user a wide spectrum of capabilities for pressure control with inlet pressures up to 6000 psig and standard operating temperatures up to 500º F (260º C).

Features & Specifications
  • Gas or liquid service
  • 316L stainless steel, Inconel®, Teflon®, and Tefzel® (or optional main seat material choice) only in flow stream
  • Electropolished 316L body with better than 25 Ra diaphragm cavity surface finish
  • Stainless steel cap with SS adjusting screw
  • Inlet pressures of up to 6000 psi
  • Adjustable outlet pressure ranges of 0 - 10, 0 - 25, 0 - 50, 0 - 100, 0 - 250, 0 - 500 and 0 - 750 psig
  • Operating temperatures of - 40º F up to +500º F (-40º C up to +260º C)
  • 20 micron filters
  • Bubble-tight shutoff under most conditions
  • Cv flow coefficients 0.025, 0.06, 0.20, and 0.50 (0.06 standard)
Unit of Measure

Specifications

Body Material

 N/A 316L Stainless Steel

Seat Material

 N/A Polyimide (metal knob)

Max. Operating Pressure

 N/A 6000 psig

Operating Temperature

 N/A -40 to 260 ºC-40 to 500 ºF

Outlet Range

 N/A 0 to 25 psig

Flow Coefficient (Cv)

 N/A 0.025

Process Port Type

 N/A 1/4" FNPT standard (1/4" FNPT gauge ports)

Port Configuration

 N/A Standard

Diaphragm Type

 N/A Standard diaphragm

Diaphragm Facing Material

 N/A Teflon®

Diaphragm Backing Material

 N/A Stainless Steel

Cap Assembly

 N/A Tamper-proof, stainless steel

Surface Finish of Diaphragm Cavity

 N/A < 25 Ra, Standard

Weight

 N/A 1.9 lbs

Options

N/A

  • Wetted materials of construction: Monel®, Hastelloy®, and titanium
  • Diaphragm attached poppet
  • Special fittings
  • Diaphragm assist spring for vacuum purging
  • Panel mount (1 3/8" mounting hole)
  • Relief valves
  • Special diaphragm assembly for water service
  • SS inlet pressure gauges
  • SS outlet pressure gauges
  • Base-mounting brackets
  • Captured vent
  • Self-relieving