{"title":"Amtrol","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 15px; color: #333333; line-height: 1.6;\"\u003e\n\u003cp\u003e\u003cspan\u003eCommercial ASME-rated expansion tanks, thermal expansion elements, and hydronic pressure vessels from Amtrol. Engineered to absorb system shock and control closed-loop system pressures.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"extrol-ax15","title":"Amtrol AX-15V Extrol Commercial ASME Hydronic Expansion Tank (7.8 Gallon)","description":"\u003cp\u003eThe Amtrol Extrol AX-15V is a commercial-grade, ASME-certified diaphragm expansion tank designed to control pressure fluctuations in closed, non-potable hydronic heating and chilled water systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eEngineered for Commercial Reliability\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eASME Rated:\u003c\/strong\u003e Built and certified to meet all ASME Section VIII, Division 1 code standards for commercial mechanical room compliance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Construction:\u003c\/strong\u003e Features a high-strength shell made of ASME-approved steel, finished with a rugged red oxide primer coating.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustry-Thickest Diaphragm:\u003c\/strong\u003e Utilizes a specialized, fixed ultra-thick Butyl\/EPDM diaphragm securely clamped into the vessel walls to prevent air-to-water migration and system waterlogging.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Amtrol","offers":[{"title":"Default Title","offer_id":42839826923614,"sku":"EXTROL-AX15","price":1450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Amtrol_Extrol_AX-15V_Primary_Front_View.jpg?v=1780782595"},{"product_id":"amtrol-ax-30","title":"Amtrol Extrol AX-30 Commercial ASME Expansion Tank","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 15px; color: #333333; line-height: 1.6;\"\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eAmtrol Extrol AX-30 Commercial ASME Expansion Tank (AX-30)\u003c\/strong\u003e is a high-performance system component engineered to deliver premium fluid distribution efficiency and reliability. Built with a heavy-duty deep-drawn steel housing, this unit provides exceptional durability and outstanding resistance to demanding system environments. Its low-maintenance, high-performance architecture makes it an ideal solution for controlling pressure changes in closed commercial hydronic heating and cooling configurations.\n  \u003c\/p\u003e\n  \u003cp style=\"margin-top: 15px;\"\u003e\n    Constructed and certified per ASME Section VIII, Division 1 code standards, the AX-30 features a premium deep-drawn dome engineering design that offers double the physical strength of traditional head-and-shell designs while minimizing systemic weld points. The internal architecture features a heavy-duty, fixed butyl diaphragm that permanently separates the system fluid from the pre-charged air chamber, preventing waterlogging and maintaining structural system balance. Outfitted with a heavy-gauge steel shell and factory-finished with a rugged red-oxide primer layer, this inline commercial expansion tank ensures continuous thermal expansion protection and rigid building code compliance.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amtrol","offers":[{"title":"Default Title","offer_id":42913134772318,"sku":"1070","price":1750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Amtrol_Extrol_AX-30_Commercial_ASME_Expansion_Tank_heavy-duty_commercial_hydronic_system_component..jpg?v=1782011408"},{"product_id":"amtrol-st-12c","title":"Amtrol Therm-X-Trol ST-12C Commercial Thermal Expansion Tank","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 15px; color: #333333; line-height: 1.6;\"\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eAmtrol Therm-X-Trol ST-12C Commercial Thermal Expansion Tank (ST-12C-DD)\u003c\/strong\u003e is a high-performance system component engineered to deliver premium fluid distribution efficiency and reliability. Built with a heavy-duty deep-drawn steel housing, this unit provides exceptional durability and outstanding resistance to demanding system environments. Its low-maintenance, high-performance architecture makes it an ideal solution for controlling dangerous pressure buildup in closed commercial potable hot water loops.\n  \u003c\/p\u003e\n  \u003cp style=\"margin-top: 15px;\"\u003e\n    Constructed and certified per ASME Section VIII, Division 1 code standards, the ST-12C features a premium deep-drawn dome engineering design that offers double the physical strength of traditional head-and-shell designs while utilizing half the welds. The internal architecture features an antimicrobial polypropylene liner coupled alongside an advanced heavy-duty butyl diaphragm to continuously neutralize system bacteria such as Legionella, Staphylococcus, and E. coli. Outfitted with a patented internal Turbulator™ to circulate incoming fluid and completely eliminate raw sediment accumulation, this inline commercial expansion tank ensures continuous thermal expansion protection and rigid building code compliance.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amtrol","offers":[{"title":"Default Title","offer_id":42913135034462,"sku":"1080","price":1800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Amtrol_Therm-X-Trol_ST-12C_Commercial_Thermal_Expansion_Tank_heavy-duty_commercial_hydronic_system_component..jpg?v=1782010943"}],"url":"https:\/\/nationalboilersupply.com\/collections\/amtrol.oembed","provider":"National Boiler Supply","version":"1.0","type":"link"}