253

Safety Relief Valves

Description: 

For solar systems.
 
Working temp range: -20° - 360°F
Normal pressure:  150 psi
Opening over pressure:  10%
Closing differential:  20%
Discharge capacity:  171,000 Btu
 
Connections:
    - Inlet, ½" female
    - Discharge, ¾" female

Approval:  TÜV certified to TRD-721-SV100 7.7
 
Meets:  ANSI Z21.22 Standard
 
TÜV Rheinland is an approved U.S. Nationally Recognized Testing Laboratory (NRTL) Certification Body for Pressure Equipment.  Meets ANSI Z21.22 "Relief Valves for Hot Water Supply Systems."

 

Downloads

Certifications: 

  • TUV

Drawings: 

code description weight
(lbs)
253042 factory set to 35 psi 0.3
253043 factory set to 45 psi 0.3
253044 factory set to 60 psi 0.3
253046 factory set to 90 psi 0.3
253048 factory set to 120 psi 0.3
253040 factory set to 150 psi 0.3