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{short description of image}     MORRISON BROS - EXPANSION RELIEF VALVES
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77 SERIES
1/4" Expansion Relief Valve

  Used on AST piping for relief of excessive pressure due to outside temperature rise. Valve allows product to return back to storage tank. Especially suited for existing pipeline and by-passing a valve that does not have expansion relief. Brass construction. Tube fittings are provided. Copper tubing is not supplied. 40 PSI setting is appropriate.
Figure 77
Figure 77

 

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76DI & 78DI SERIES
1/2" Expansion Relief Valve

  Used on AST piping for relief of excessive pressure. Valve allows product to return back to storage tank. Ductile Iron construction.

Fig. 76DI - for PRECISE settings. Specify 25 or 50 psi. Primarily for use with leak detection systems.

Fig 78DI - 40 PSI=standard pressure setting. 25 and 100 PSI settings are available. Pressure settings are approximate.

Download Product Specification (PDF)
Figure 78DI
Figure 78DI

 


   
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