Qualitrol 201/202/205 Small Pressure Relief Device

 

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 psi 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

Options

  • Available dual sealing submersible design made entirely from stainless steel for special applications
  • Operating pressure and relief flow rate
  • Visual indicator style
  • Tank connection and sealing systems
  • Completely Stainless Steel option

Group Created with Sketch. Applications

For over pressure protection on transformers, load tap changers and other related liquid-filled electrical apparatus.

Basic
Qualitrol 201, 202, 205 Small Pressure Relief Devices

Qualitrol 201/202/205 Small Pressure Relief Device

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

Learn More
Advanced
Qualitrol Large Pressure Relief Device LPRD

Qualitrol LPRD/208/213/216 Large Pressure Relief Device

Stainless steel operating valve, fasteners, and hardware

Flange and ring are made from aluminum with a chromate conversion coating with exposed aluminum components receiving an additional epoxy paint coat

Switches can be specified to operate as latching or momentary, SPDT or DPDT, high DC, or low current gold contact type, and with connector, terminal box, or flying lead style connections

Learn More
Total

Qualitrol XPRD Extra Large Pressure Relief Device

Corrosion resistant stainless steel directional shield, hardware, and operating valve

50% more tank protection during over pressure events

Larger diameter throat and discharge outlet for increased flow

Learn More