AMTROL® Therm-X-Trol ST-C ST-12C Thermal Expansion Tank, 6.4 gal Capacity, 3/4 in Connection, MNPT Connection, Steel

Thermal expansion occurs as domestic water is heated. Left unchecked, the resulting pressure increase can cause relief valve discharge and other potentially hazardous conditions. Therm-X-Trol expansion tanks absorb this expanded water, keeping water pressure at a safe level. Amtrol invented the thermal expansion tank to control pressure build-up in closed, potable water systems. This prevents the water heater pressure relief valve from opening, saves energy and eliminates a potential safety hazard.

AMTROL® Therm-X-Trol Thermal Expansion Tank, Series: ST-C, 6.4 gal, 3/4 in, MNPT, Steel, Red Oxide Primer, 200 deg F, 18 in H x 12 in Dia

• Antimicrobial liner neutralizes bacteria on contact
• Turbulator water diffuser
• Deep drawn steel domes for 2X the strength of other tanks
• Thickest diaphragm for extra long life
• Hoop and groove design for added reliability
• Accepts expanded water as system temperature rises and returns hot water to system when demand occurs
• Multiple units can be installed to accommodate larger systems
• Stainless steel system connection
• Heavy-duty butyl NSF/ANSI 61 diaphragm
• Antimicrobial liner protection
• Schrader valve with EPDM seats air valve
• InSight indicator cap
• 0.5 maximum accept factor
• Designed and constructed per ASME code section VIII, division 1
• Fixed diaphragm construction
• Made in USA

• Catalog https://assets.unilogcorp.com/267/ITEM/DOC/Amtrol_ST_80VC_Catalog.pdf
• Instruction/Installation Manual https://assets.unilogcorp.com/267/ITEM/DOC/Amtrol_ST_180VC_Manual.pdf
• Specification Sheet https://assets.unilogcorp.com/267/ITEM/DOC/Amtrol_ST_60VC_Specification_Sheet.pdf