Closed high pressure safety valve spring inching inching valve opening height is less than 1/4 the diameter of the flow channel is usually a runner diameter of 1/40 1/20. Action process inching valve is proportional action type, mainly for liquid occasions, sometimes for a small gas emissions occasion. Shandong Everbright Valve Co., Ltd. specializes in producing stainless steel valves valve manufacturer, welcome new and old customers to order our products! Technical terms: Rated displacement: refers to the actual emissions as a safety valve for the reference allowed that part. Equivalent calculation Displacement: refers to the applicable conditions of pressure, temperature, media properties and other conditions are the same nominal displacement, the calculation of the safety valve displacement. Frequency hopping: relief valve flap unusually rapid back and forth movement, in the movement of the valve contacts the valve seat. Flutter: abnormally rapid relief valve flap valve back and forth movement types in the movement do not contact the valve seat. Discharge valve according to the different media the way, the valve can be divided into fully enclosed, semi-enclosed and open, three. 1. fully enclosed valve closed valve when the exhaust valve, gas all through the tailpipe emissions, the media can not leak between the outside, mainly for medium toxic. Container of flammable gas. 2. The semi-enclosed portion of the gas valve semi-closed valve discharged through the exhaust pipe Weifang valve, also part of the leak from a gap between the bonnet and the valve stem, the multi-media as a container for the gas does not pollute the environment . 3. Open valve open valve bonnet is open, the spring chamber and the atmosphere, which will help reduce the temperature of the spring, mainly for the medium is steam, and does not pollute the atmosphere of hot gas container. Shandong Everbright valve (Figure), cast steel valves, Valve Co., Ltd. by Shandong Everbright valve. Shandong Everbright Valve Co., Ltd. (www.sdgdfm.com) is a professional "valve" of the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage to participate in healthy competition in the market, so that the "Everbright" brand has a good reputation. We adhere to the "service first, customer first" principle, so that the valve Everbright won the trust of all the customers in the ball valve, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!