Residual pressure valve is to maintain a certain indoor static pressure, positive pressure to achieve air-conditioned rooms and free energy provided automatic control equipment residual pressure valve with damper, it is a way to open the air volume and pressure regulator valve price, according to the quiet pressure to adjust the opening degrees, with a heavy hammer position to balance pressure. Air flow through the residual pressure valve is generally between 100-1200m3 / h, the pressure is maintained at between 5-40Pa. Overview of residual pressure valve (YA type) in order to conform our ventilation, the atmosphere of urgency the necessary engineering modulating excess pressure valve manufacturer company to achieve a positive pressure air-conditioned room no energy automatic control by the Ministry of Electronics Industry Institute of eleventh plan based on oceanic Similar product plans, my company to develop, produce residual pressure valve to make up for the gaps in the automatic control of the interior pressure of the project. The product has a closed precision, crashed sensitive, convenient modulating, appearance is elegant, does not consume energy and other benefits. Hammer-type residual pressure valve, Xi'an residual pressure valve, air-conditioning is provided by the Texas Shenglong Shenglong ventilation and air conditioning plant. Texas Shenglong ventilation and air conditioning plant (www.fengguan666.com) (www.dzsltfkt.com) strong, credible, Shandong Texas fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shenglong into the brilliant air conditioning and you work for a better future!