Mastercool 83894 R1234yf Manual Coupler Kit

Forged Brass. Precision Engineered. Built to Protect Every Connection. Mastercool’s R1234yf Manual Coupler Kit starts with a single forged brass body — no welded seam, no joint, no weak point. Every dimension, from the seal gland to the hex, is engineered to spec rather than left to chance, giving technicians a coupler that seals right, fits right, and protects the service port on every connection.

• One-Piece Forged Brass Body: No Welded Seam Like a Two-Piece Machined Body — Just Solid, Forged Brass Holding Its Shape and Seal Integrity Through Years of Daily Use
• Recovers Trapped Refrigerant: Recovers Refrigerant Trapped Between the Coupler and Fitting Instead of Venting It, Reducing Refrigerant Loss and Lowering Costs – Especially with Higher-Priced R1234yf
• Meets SAE J639 & J2888: Full Compliance with R1234yf Service Equipment Standards
• Extended Disconnect Protection Sleeve: Prevents the Coupler From Being Removed Before the Valve Core Is Fully Closed, Eliminating Accidental Refrigerant Loss Through an Open Port
• Patented Spring-Loaded Depressor: Manufactured to Reach the Maximum Valve Core Depth Specified by SAE Guidelines, Ensuring Reliable, Consistent Engagement Across Standard Service Ports
• Precision-Machined 18mm Hex: Machined to a True 18mm After Forging, So a Standard Wrench Seats Perfectly Every Time — No Rounded Corners, No Slipping
• Nickel-Plated Brass: Protects the Body From Corrosion and Discoloration Through Years of Shop Use
• All-Metal Construction: No Plastic Components, Built to Hold Up to Drops, Impacts and Daily Wear