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Model 525 Slow Opening Blow Off Valve

Class 300
ANSI B 16.34
650 psi Working Steam Pressure @ 500 º F
750 psi @ 100 º F
100% Pressure Tested
Maximum Boiler Blow-Off Pressure 480 psi
Threaded Ends
High Temp. Powder Coating for Corrosion Reistance
CRN OCO7135.2, 24, 25, 26
CRN OEO2171.7, 79, 70, 78, 7AY, 7T, 7N

The United Brass slow opening boiler blow off valve has been designed for the rugged service of boiler treatment and scale. The cast steel knife gate valve conforms to Class 300 of ANSI B16.34 and features a stainless steel seat and disc hardened to Rockwell 60. ASME Boiler and Pressure Vessel Code Sections 1 PG-42.1.12 and Power Piping Code ASME B 31.1 Table 126.1 reference steel valves to ANSI B16.34. The sliding disc provides a cleaning action that keeps the seating area clear of scale and debris.
Model 525 Slow Opening Blow Off Valve


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  1. Model 525 1" Slow
    Opening Blow Off Valve

    Model 525 1" Slow Opening Blow Off Valve
    B-Total Length 12.30 in
    Quantity per Carton 1
    C-Length 9.50 in
    Valve Type Gate


  2. Model 525 11/4" Slow
    Opening Blow Off Valve

    Model 525 11/4" Slow Opening Blow Off Valve
    B-Total Length 12.30 in
    Quantity per Carton 1
    C-Length 9.50 in
    Ship Weight 26.0 lbs
    Valve Type Gate


  3. Model 525 11/2" Slow
    Opening Blow Off Valve

    Model 525 11/2" Slow Opening Blow Off Valve
    Quantity per Carton 1
    Ship Weight 40.0 lbs
    Valve Type Gate


  4. Model 525 2" Slow
    Opening Blow Off Valve

    Model 525 2" Slow Opening Blow Off Valve
    Quantity per Carton 1
    Ship Weight 68.0 lbs
    Valve Type Gate


4 Item(s)

per page

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