{"product_id":"diversitech-qtm-1-mac-line-piercing-valve-1-4-5-16-3-8-inch","title":"Diversitech qtm-1 Mac Line Piercing Valve 1\/4 5\/16 3\/8 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe DIVERSITECH qtm-1 is a MAC line piercing valve designed for refrigerant line access on HVAC systems. It provides a single connection point for both piercing and servicing small-diameter copper tubing. A spring-loaded needle automatically back-seats after the service hose is removed, leaving the line free of restriction and forming a leak-proof seal. Two socket-head screws secure the valve body to the tubing. Compatible with 1\/4 inch, 5\/16 inch, and 3\/8 inch OD tube sizes, this tool is a standard service item for HVAC technicians working on residential and light-commercial refrigeration circuits.\u003c\/p\u003e\n\u003cp\u003eThe qtm-1 is suited for use on both ducted and ductless HVAC systems where access to a refrigerant line is required without permanently altering the line set. Typical applications include checking system charge, adding refrigerant, or evacuating a circuit on equipment that lacks a standard Schrader service port. The valve is installed directly onto existing copper tubing in the field, making it useful for service calls where original access ports are absent or damaged.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSingle connection point handles both line piercing and refrigerant service\u003c\/li\u003e\n  \u003cli\u003eSpring-loaded needle automatically back-seats after hose removal, eliminating line restriction\u003c\/li\u003e\n  \u003cli\u003eTwo socket-head screws provide secure attachment to OD tubing without soldering\u003c\/li\u003e\n  \u003cli\u003eNeedle depressor is discarded after use; wing cap provides an additional precautionary seal\u003c\/li\u003e\n  \u003cli\u003eCompatible with three common OD tube sizes: 1\/4 inch, 5\/16 inch, and 3\/8 inch\u003c\/li\u003e\n  \u003cli\u003eSuitable for both ducted and ductless system applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use on copper refrigerant tubing with 1\/4 inch, 5\/16 inch, or 3\/8 inch OD on both ducted and ductless HVAC systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a licensed HVAC technician. Recover or isolate system refrigerant as required by EPA Section 608 regulations before piercing any pressurized line. Secure the valve body firmly onto the tubing using the two socket-head screws with an appropriate hex key before engaging the piercing needle. After servicing, confirm the needle has fully back-seated and install the wing cap to complete the seal.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTube Size Compatibility\u003c\/strong\u003e: 1\/4 inch, 5\/16 inch, 3\/8 inch OD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem Type\u003c\/strong\u003e: Ducted and Ductless\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeedle Seal Type\u003c\/strong\u003e: Spring-loaded, auto back-seating\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAttachment Method\u003c\/strong\u003e: Two socket-head screws\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: DIVERSITECH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: qtm-1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DIVERSITECH","offers":[{"title":"Default Title","offer_id":51138477982002,"sku":"QTM-1","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/305533559.png?v=1778257375","url":"https:\/\/voomisupply.com\/products\/diversitech-qtm-1-mac-line-piercing-valve-1-4-5-16-3-8-inch","provider":"Voomi Supply","version":"1.0","type":"link"}