{"product_id":"taco-cx42-125-11-gallon-diaphragm-expansion-tank","title":"Taco CX42-125 11 Gallon Diaphragm Expansion Tank","description":"\u003cp\u003eEfficiently manage thermal expansion and protect your hydronic heating system components with the \u003cstrong\u003eTaco CX42-125\u003c\/strong\u003e diaphragm expansion tank. This 11-gallon model is engineered to absorb excess pressure caused by fluid temperature fluctuations, preventing relief valve discharge and potential system damage. By integrating the \u003cstrong\u003eCX42-125\u003c\/strong\u003e into your setup, you ensure consistent pressure regulation, which is essential for the longevity and reliable operation of residential and commercial heating circuits.\u003c\/p\u003e\u003cp\u003eThis expansion tank utilizes a heavy-duty internal diaphragm to create a permanent, impenetrable barrier between the system water and the air cushion. This specialized design prevents the absorption of air into the system fluid, effectively mitigating corrosion, oxygen-related issues, and trapped air noise. The robust steel construction ensures the tank handles constant cyclical stresses while maintaining its pre-charged pressure integrity.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Separation:\u003c\/strong\u003e High-grade diaphragm construction maintains a strict air-water boundary for long-term system health.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Stability:\u003c\/strong\u003e Effectively manages fluid expansion during thermal cycles to reduce mechanical strain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion Prevention:\u003c\/strong\u003e Eliminates air-to-water contact to protect boiler components and piping from internal oxidation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for closed-loop hydronic heating systems, radiant floor heating, and baseboard circulation networks requiring 11-gallon capacity volume support.\u003c\/p\u003e","brand":"Taco","offers":[{"title":"Default Title","offer_id":43136492503134,"sku":"CX42-125","price":2538.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/CX42_125_image_87902d2a-dde7-4661-8096-0316708e4a40.png?v=1786138780","url":"https:\/\/nationalboilersupply.com\/products\/taco-cx42-125-11-gallon-diaphragm-expansion-tank","provider":"National Boiler Supply","version":"1.0","type":"link"}