{"product_id":"unico-txv-3t-454-txv-kit-3-ton-r454b-chatleff","title":"Unico txv-3t-454 Txv Kit 3 Ton R454B Chatleff","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe UNICO txv-3t-454 is a thermostatic expansion valve kit designed for use with R454B refrigerant systems rated at 3 tons. The kit includes Chatleff connections, which are the standard fitting type required for A2L-compatible refrigerant circuits. Licensed HVAC technicians install this valve as part of the metering device assembly in a split or air handler system. The TXV regulates refrigerant flow into the evaporator coil, maintaining proper superheat and protecting the compressor from liquid flood-back. This kit format simplifies field installation by supplying the valve and connection hardware together.\u003c\/p\u003e\n\u003cp\u003eThis valve kit is intended for residential and light-commercial cooling systems operating on R454B, a lower-GWP A2L refrigerant now common in newer equipment. It is sized for 3-ton capacity systems and is suited for use with Unico high-velocity air handler systems or compatible equipment that calls for Chatleff-style TXV connections. Install scenarios typically include new equipment commissioning or refrigerant-circuit component replacement during a system upgrade from legacy refrigerants.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eRated for 3-ton system capacity\u003c\/li\u003e\n  \u003cli\u003eConfigured for R454B refrigerant, an A2L lower-GWP replacement refrigerant\u003c\/li\u003e\n  \u003cli\u003eChatleff connections included for A2L-compatible circuit fittings\u003c\/li\u003e\n  \u003cli\u003eKit format supplies valve and connection hardware together for field installation\u003c\/li\u003e\n  \u003cli\u003eFunctions as the metering device to regulate refrigerant flow and maintain proper superheat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with 3-ton R454B refrigerant systems requiring Chatleff-style TXV connections, consistent with Unico high-velocity system applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation must be performed by an EPA Section 608-certified HVAC technician familiar with A2L refrigerant handling requirements. Recover all refrigerant and de-energize the system before removing the existing metering device. Follow equipment manufacturer torque and brazing specifications for Chatleff fittings, and verify superheat after recharge to confirm proper valve operation. Consult local codes and ASHRAE 15 guidelines for A2L refrigerant safety requirements in the installation space.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRefrigerant Type\u003c\/strong\u003e: R454B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem Capacity\u003c\/strong\u003e: 3 tons\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: Chatleff\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValve Type\u003c\/strong\u003e: Thermostatic Expansion Valve (TXV)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: UNICO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: txv-3t-454\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"UNICO","offers":[{"title":"Default Title","offer_id":51467419025714,"sku":"TXV-3T-454","price":158.86,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/313946463.webp?v=1783904018","url":"https:\/\/voomisupply.com\/products\/unico-txv-3t-454-txv-kit-3-ton-r454b-chatleff","provider":"Voomi Supply","version":"1.0","type":"link"}