Direct acting valve direct-acting valve is opened under the direct action of the working medium, which rely on the role of the working medium pressure against the biasing mechanism is applied to the valve flap mechanical load, the valve open. This safety valve has a simple structure, quick action, good reliability advantages. But because relying on structural load Weifang cast steel valves, the load size is limited and can not be used for high-pressure, large diameter occasions. Opening pressure adjustment: ① before valve factory, one by one should adjust its opening pressure to the setting value of user requirements. If the user make steel valve spring working pressure level categories, press in general should be adjusted lower limit of pressure stage factory. ② user before the safety valve is installed on the protected equipment or before installation, you must re-adjusted at the installation site, in order to ensure that the setting pressure relief valve to meet the requirements. 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. specializing in the production valve manufacturers, welcomed the new and old customers to order our products! Shandong Everbright valve (Figure) | cast steel valves Price | cast steel valves provided by the Shandong Everbright Ltd. 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!