SX-40V | Expansion Tank Extrol SX Hydronic 20 Gallon 100 Pounds per Square Inch Gauge 1" FNPT SX-40V Non-ASME for Closed Hydronic Heating Radiant and Chilled Water Systems | Amtrol Part Number_ST-25V They are ideal for a

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SX-40V | Expansion Tank Extrol SX Hydronic 20 Gallon 100 Pounds per Square Inch Gauge 1" FNPT SX-40V Non-ASME for Closed Hydronic Heating Radiant and Chilled Water Systems | Amtrol Part Number_ST-25V They are ideal for aThe Amtrol SX 40V Expansion Tank is a non ASME Extrol tank designed for closed hydronic heating, radiant, and chilled water systems. It has a 20 gallon capacity and is rated for 100 pounds per square inch gauge (psig) of pressure. The tank is made of steel and has a 1 13 16 inch stand to connection and a 1 inch NPTF steel system connection. The SX 40V has a 12 psig factory precharge and a projection welded air valve. The Amtrol SX 40V Expansion Tank