According to different media discharge valve mode, the valve can be divided into fully enclosed, semi-enclosed and open, three. 1. closed fully enclosed valve exhaust valve, the gas all through the tailpipe emissions, the media can not leak outside the room, mainly used for toxic media. Containers of flammable gases. 2. The semi-enclosed portion of the gas valve semi-closed valve discharged through the exhaust pipe, also part of the leak from the gap between the bonnet and the valve stem, the medium is used for the container will not pollute the environment gas. 3. Open valve open valve bonnet is open, the spring valve chamber and the atmosphere, which will help to reduce the temperature of the spring, mainly applied to the medium is steam, and atmospheric temperature does not produce pollution the gas container. Safety valve according to the working temperature is generally divided 1. room temperature relief valve is installed only on the temperature in heating, air conditioning or water system's safety valve 110 ℃. 2. High temperature relief valve is a safety valve means specifically used in the solar system and the mold temperature of 180 ℃ temperature systems. Valve Co., Ltd. Shandong Everbright valve manufacturer specializing in the production, welcome new and old customers to order our products! Such non-direct acting valve safety valve can be divided into pilot safety valve, safety valve driving force auxiliary device. Pilot valve is to rely on the media discharged from the pilot valve to drive or control. The pilot valve itself is a direct-acting valve A27H spring inching valve manufacturers sometimes use other forms of valves. Pilot valve suitable for high pressure, large diameter occasions. The main valve pilot valve can also be designed to rely on the work of the media to seal the form, or can be applied much larger than the direct-acting valve mechanical load on the valve, which has a good sealing performance. Meanwhile A27H inching valve spring, it moves very little affected by backpressure. The disadvantage is that it is reliable safety valve with the main valve and pilot valve related action as a direct-acting valve as quickly, reliably, and more complex structure. Everbright valve manufacturer, A27H spring prices inching valve, safety valve provided by Shandong China Everbright Limited valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) located in Weifang City, Shandong Province, Bao Tong Street North Cravens District Makers Industrial Park. Scraps and development in the wave of market economy, the current Everbright valve has a high profile in the ball, and enjoy a good reputation. Everbright valve made of the whole network business alliance certification, marking our service and management level has reached a new height. Everbright valve staff willing to work with all people of insight and common development, for a better future.