Changchun Kuancheng Boiler Air‑Vent Valve Factory (formerly Jilin Zhongquan Industrial Co., Ltd.)

To express our gratitude and reward our customers for their long‑term support for the Zhongquan brand air‑vent valves, our company successfully developed two models of micro automatic air‑vent valves in 2012 (P21X‑1.5LW, P21X‑1.5JW, P21X‑0.9W). Adopting a new technical design with spring‑assisted sealing and a lever‑opening mechanism, the product delivers improved sealing performance and operational stability. It is the preferred choice for installation in floor heating, air‑conditioning, heating systems and large‑capacity vessels.

When you intend to purchase a reliable, high‑quality full‑auto air‑vent valve, please choose the genuine Zhongquan brand and trademark!