Jhn R134A Self Sealing Valve

The R134a Self-Sealing Valve is an environmentally conscious component found on modern refrigerant cans. Unlike older, piercing-style valves, this spring-loaded mechanism closes automatically when a charging hose is removed. This design prevents the accidental release of leftover refrigerant into the atmosphere, allowing you to use a partial can and safely store the rest for future use. This is a key feature mandated by the EPA to reduce environmental impact.