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FIG 78DI

1/2” Expansion Relief Valve - 25, 40, or 100 PSI

Designed for use on aboveground storage tank piping systems. Allows excess pressure caused by thermal expansion of the liquid to return to the tank.

Product Features

Standard Features

Not for use with leak detection systems

One way flow

Approximate settings available; 25, 40 or 100 PSI


Construction Details

  • Body: Ductile iron
  • Cap: Stainless steel
  • Spring: Stainless steel
  • Ball: Stainless steel

Product Ordering Instructions

Figure Suffix Size Description Weight (lbs)
078DI 0100 AV .5” Expansion Relief Valve (25 PSI Setting) 0.75
078DI 0200 AV .5” Expansion Relief Valve (40 PSI Setting) 0.75
078DI 0300 AV .5” Expansion Relief Valve (100 PSI Setting) 0.75
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