Mastercool 90365 Red Manual Shut-Off Valve Adapter 1/4" x 3/16" Flare

The Mastercool 90365 is a straight manual shut-off valve adapter designed for automotive air conditioning service and refrigerant containment. This red-coded adapter features 1/4" male flare x 3/16" female flare SAE connections, making it compatible with standard automotive A/C charging hoses and service ports.

Key Features:

• Ball valve design with flexible hose provides precise refrigerant flow control
• Quarter-turn valve handle operation for quick open/close action
• Red color coding for easy high-side identification
• Screws directly onto charging hose end for convenient installation
• Meets SAE, EPA, and UL requirements for refrigerant containment
• Can be operated with one hand during service procedures

This shut-off valve adapter helps technicians comply with EPA regulations requiring shut-off valves within 12 inches of charging hose ends to prevent unnecessary refrigerant venting. The manual ball valve design allows for safer refrigerant handling compared to allowing refrigerant to blow out during A/C service procedures. Compatible with R134a, R12, and other common automotive refrigerants.