As the global demand for sustainable energy grows, renewable energy systems such as solar and wind power are being deployed in increasingly diverse and challenging environments. In these systems, maintaining performance, safety, and longevity is paramount. One of the often-overlooked yet critical components ensuring these systems operate reliably is the Waterproof Vent Plug—a small but powerful device designed to provide both effective pressure equalization and superior waterproofing.

Waterproof Explosion-Proof Valves are specialized industrial components designed to operate safely in hazardous environments where both water ingress and explosive atmospheres are present. These valves combine robust construction with advanced safety features to prevent ignition sources while maintaining reliable performance in wet conditions.

An Explosion-Proof Vent Valve (EPVV) is a specialized safety device designed to prevent catastrophic failures in pressurized systems by safely releasing excess pressure while containing potential explosions. These valves are engineered with robust materials and precise mechanisms to withstand extreme conditions, typically rated for pressures up to 10 bar (145 psi) and temperatures ranging from -40°C to +150°C (-40°F to 302°F).

In this article, we explore the three major methods of producing waterproof breathable membranes, highlight their key differences, and offer guidance for selecting reliable materials—especially in high-demand applications.

An Aluminum Breather Valve is a specialized mechanical device designed to regulate pressure and prevent contamination in enclosed systems such as gearboxes, hydraulic reservoirs, and industrial machinery. Constructed from high-grade aluminum alloys (e.g., 6061-T6 with tensile strength of 45,000 psi), these valves feature precision-engineered components to ensure reliable performance under varying operational conditions.

To address this issue, PUW has developed a new Explosion-Proof Breather Valve for Power Batteries in Electric Buses, designed to prevent pressure buildup during thermal runaway, rapidly vent gas, and balance the internal and external pressure of the enclosure.

As the adoption of new energy vehicles rapidly increases in China, safety concerns surrounding battery systems are becoming more prominent. In situations such as overcharging or collisions, power lithium batteries can easily emit smoke, catch fire, or even explode—most of which are triggered by a phenomenon known as thermal runaway.

Therefore, installing PUW explosion-proof pressure relief vent valves during battery production is essential to release excessive internal pressure and ensure the safety of the battery system.

After PUW entered the automotive field in 2013, it has been committed to the research and development, production and sales of protective products in the field of auto parts. PUW entered the field of automotive 3-electric protection (battery, electric drive, electronic control), and formally developed it in 2014 The battery explosion-proof valve has quickly become a leader in automobile battery protection, and has successively provided services for SAIC, Geely, BYD, Dongfeng Electric, Wanxiang, BAK, CATL, BAIC, etc.

Based on 10 years of research and development experience in the field of waterproof and breathable, PUW relies on the professional laboratory of Waterproof and Breathable Engineering and Technology Research Center and the professional R&D, manufacturing and service team to provide professional waterproof, breathable and explosion-proof products and solutions for the customers of new energy vehicles.

Car battery safety has been a hot topic in China. At present, PUW's R & D and design of explosion-proof valves, designed for automotive battery packs, battery boxes and other explosion-proof waterproof breathable products, successfully solved the problem of automotive battery explosion. It has been widely used in pure electric cars, hybrid cars, new energy hybrid cars, hybrid cars and other batteries to promote the rapid development of automotive batteries.