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The JB INDUSTRIES qc-s4a-134a is an automotive quick adapter designed to retrofit existing SAE flare fittings for R-134A refrigerant service. The adapter features a QC x Male ACME Thread end style with a nominal size of 1/4 x 1/2 inches, allowing mobile A/C technicians to connect R-134A service equipment to vehicles that were originally equipped with older SAE flare-style ports. It is manufactured domestically at JB Industries' facility in Aurora, Illinois. When the gasket requires replacement, use the P509 gasket as the correct service part.
This adapter is intended for automotive air conditioning service work involving R-134A refrigerant. It is commonly used by mobile A/C technicians and automotive service professionals performing system evacuation, charging, and pressure testing on passenger vehicles and light trucks. The quick-connect design speeds up hose attachment and removal during high-volume service operations, reducing downtime between vehicle repairs.
Designed for use with R-134A refrigerant service equipment. Retrofits existing SAE flare fittings commonly found on automotive A/C systems requiring R-134A service connections.
This fitting is installed by qualified automotive A/C technicians or HVAC/R service professionals holding the appropriate refrigerant handling certifications. Before connecting or disconnecting refrigerant service fittings, ensure the system pressure is within a safe working range and follow all applicable EPA Section 608 or Section 609 refrigerant handling requirements. Inspect and replace the P509 gasket if it shows wear, cracking, or deformation to prevent refrigerant leaks at the connection point. Do not overtighten the ACME thread connection; hand-tighten and verify with a leak check before proceeding with service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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