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Instantly add the 201/202/205 Small Pressure Relief Device and 50,000+ more product series to your store or catalog  
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Qualitrol Small Pressure Relief Device, 201/202/205

201/202/205 Small Pressure Relief Device

Brand: Qualitrol Company
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Mechanical over pressure protection device provides pressure relief on transformers during over pressure conditions, automatically resealing once pressure has fallen. 

Available with a stainless steel pull ring to allow for manual operation.

Optional port protection with cover for inhibiting matter from entering the valve body.
Features
  • Standard models have a one-piece brass housing with stainless steel spring, pull ring and Viton O-ring seal
  • Rugged design provides trouble-free over pressure protection
  • All brass and stainless steel external construction
  • Compact, low profile reduces damage risk
  • Weather-resistant Viton O-rings withstand decades of service
  • Stainless steel pull ring permits safe manual bleeding of pressure
  • Meets or exceeds industry standards
  • 10 psig valves comply with American National Standards (ANSI) C57.12.20.2007
  • Highly flexible designs for many applications
  • Compatible with hole fittings
  • Many sizes of valves allow for a number of installation options including retrofitting older equipment
  • Identification on valve makes ordering, installing or referencing hassle-free
  • Flow rates available from 35 to 200 SCSM
  • Designs accommodate a range of operating pressures (3.5 to 35 psi)
  • Design prevents entry of contaminants
  • Unique configuration inhibits entry of contaminants
  • Covers are standard on most valves
  • Sunlight, oil and ozone resistant polypropylene or PVC cap on indicator models

Specifications

Brand

Bug Shield Material

  • Stainless Steel

Flow Rate

  • 200 scfm at psig: 15 (kPa: 103.4, bar: 1.034) Min. with psi: 10 (kPa: 68.95, bar: 0.6895) Operating Pressure - 205 Series
  • 35 scfm at psig: 15 (kPa: 103.4, bar: 1.034) Min. with psi: 10 (kPa: 68.95, bar: 0.6895) Operating Pressure - 201 Series
  • 50 scfm at psig: 15 (kPa: 103.4, bar: 1.034) Min. with psi: 10 (kPa: 68.95, bar: 0.6895) Operating Pressure - 202 Series

Hardware Material

  • Stainless Steel

Hex Size

  • 1” - 201 Series
  • 1-1/16” - 201 Series
  • 1-1/4” - 202 Series
  • 1-3/4” - 205 Series
  • 1-7/8” - 205 Series
  • 3/4” - 202 Series
  • 7/8” - 202 Series

Indicator Material

  • Polypropylene - 202, 205 Series
  • PVC - 202, 205 Series

Mounting

  • 1/4”-18 NPT - 201, 202 Series
  • 1-1/4 to 11-1/2” NPT - 205 Series
  • ISO 228/1-G 1” A - 205 Series

O-Ring Material

  • Viton

Operating Pressure

  • psig: 2.9 to 11.6 (kPa: 20 to 80, bar: 0.2 to 0.8) - 205 Series
  • psig: 3.5 to 10 (kPa: 24.13 to 68.95, bar: 0.2413 to 0.6895) - 202 Series
  • psig: 3.5 to 35 (kPa: 24.13 to 241.3, bar: 0.2413 to 2.413) - 201 Series

Ring Material

  • Stainless Steel

Spring Material

  • Stainless Steel

Standard Operating Temperature

  • -29° to 105° C (-20° to 220° F)

Valve Body

  • Brass
  • Stainless Steel

Documentation

Data Sheets

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