Amtrol AX-240V AX EXTROL ASME Expansion Tank, 131.7 Gallon (117-281) Amtrol AX EXTROL AX-240V ASME Expansion Tank Features: • Proven diaphragm design since 1954 • Designed and constructed per ASME Section VIII, Division 1 standards • Factory pre-charged to 12 psig • Maximum working pressure is 125 psig • Maximum operating temperature is 240ºF Amtrol AX EXTROL AX-240V ASME Expansion Tank Specifications: • Tank Volume (Gallons) - 132 • Max. Accept. Gallons - 46 • A Height (Inches) - 53-1/2 • B Diameter (Inches) - 49-5/8 • System Conn. (NPT) - 1 * This product is non-returnable * Additional charge for residential delivery"