High-Elastic Vent Valve Rubber Cap for Reliable Lead-Acid Battery Protection

Automatically opens at the set pressure and reseals tightly, protecting your equipment from overpressure damage.

The flexible rubber lip seals completely at normal pressure and releases only when needed, preventing unwanted leakage and backflow.

Instead of risking equipment breakdown, the valve vents excess pressure automatically and closes again, keeping your system running safely.

Resistant to aging and ozone, the valve keeps its elastic rebound far longer than ordinary rubber parts, cutting downtime and spare-part costs.

With excellent elastic rebound and low compression set, the valve maintains stable opening pressure after millions of cycles.

Available in silicone or EPDM to suit hot, cold, water or oil conditions, matching demanding operating environments.

Sizes, hardness, colors and opening pressure are customizable per your drawing, so the valve drops straight into your product.