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201/202/205 Small Pressure Relief Device
Brand: Qualitrol CompanyMechanical 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