Iron Body Stainless Cap
Expansion Relief Valve

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1/2 Inch NPT Ductile Iron 50 PSI Expansion Relief Valve With Stainless Cap

1/2 Inch NPT Ductile Iron 50 PSI Expansion Relief Valve With Stainless Cap

Allows excess pressure caused by thermal expansion of the liquid to return to the AST tank.

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1/2 Inch NPT Ductile Iron 25 PSI Expansion Relief Valve With Stainless Steel Cap  Spring  And Ball

1/2 Inch NPT Ductile Iron 25 PSI Expansion Relief Valve With Stainless Steel Cap Spring And Ball

Allows excess pressure caused by thermal expansion of the liquid to return to the AST tank.

Quick Info
1/2 Inch NPT Ductile Iron 40 PSI Expansion Relief Valve With Stainless Steel Cap  Spring  And Ball

1/2 Inch NPT Ductile Iron 40 PSI Expansion Relief Valve With Stainless Steel Cap Spring And Ball

Allows excess pressure caused by thermal expansion of the liquid to return to the AST tank.

Quick Info
1/2 Inch NPT Ductile Iron 100 PSI Expansion Relief Valve With Stainless Steel Cap  Spring  And Ball

1/2 Inch NPT Ductile Iron 100 PSI Expansion Relief Valve With Stainless Steel Cap Spring And Ball

Allows excess pressure caused by thermal expansion of the liquid to return to the AST tank.

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