Diversitech QTM-2 Piercing Valve

The Diversitech QTM-2 MAC Line Piercing Valve is a professional-grade solution for establishing secondary access ports on 1/2" and 5/8" OD HVAC tubing. Engineered for efficiency, this uniport piercing valve integrates the piercing and servicing operations into a single connection point, minimizing potential leak paths. The internal mechanism features a spring-loaded needle that automatically back-seats once the charging hose is disconnected, ensuring the line remains free of restriction and effectively sealed. Built to withstand high-pressure environments, it is rated for up to 300 PSI and 300°F. The assembly is secured via two socket-head screws and utilizes refrigerant-resistant O-rings for long-term compatibility with common refrigerants like R-410A. The included wing cap serves as a dual-purpose tool for manual piercing and acting as a secondary precautionary seal after the service is complete. This self-piercing tap valve is a staple for technicians requiring reliable, temporary, or permanent access to larger refrigeration lines without the need for brazing.

• Uniport Design: Simplifies the workflow by allowing piercing and servicing through a single high-side or low-side connection.
• Automatic Back-Seating: The internal needle retracts automatically to prevent flow restriction and ensure a primary leak-proof seal.
• Resilient Sealing: High-grade O-rings are specifically designed to resist degradation from modern refrigerants and oils.
• Manual Installation: The wing cap design allows for tool-free piercing, while the included hex wrench secures the valve body to the tubing.
• Secondary Protection: The wing cap acts as an additional air-tight seal once the needle depressor is removed.

What tubing sizes is the QTM-2 compatible with?
This specific model is designed for 1/2 inch and 5/8 inch outside diameter (OD) copper or aluminum tubing.

Can the QTM-2 be used on R-410A systems?
Yes, the valve is rated for pressures up to 300 PSI and features refrigerant-resistant seals compatible with R-410A and other standard HFC/HCFC refrigerants.

Does this valve require constant monitoring after installation?
While designed with a spring-loaded back-seating needle and a secondary sealing cap for a leak-proof finish, many technicians use these for diagnostic access and then install permanent access fittings if long-term monitoring is required.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.