JB / T2766-1992 PN16.0 ~ 32.0MPa pipes, fittings, valves ends dimension JB / T2769-2008 PN16.0 ~ 32.0MPa threaded flange JB / T2770-1992 PN16.0 ~ 32.0MPa connector nut JB / T2771- 1992 PN16.0 ~ 32.0MPa joint JB / T2772-2008 PN16.0 ~ 32.0MPa blind JB / T2773-1992 PN16.0 ~ 32.0MPa stud JB / T2774-1992 PN16.0 ~ 32.0MPa order end double stud and screw size electric drive valve is commonly used valve-driven approach, often referred to this drive means in the form of drive means for the valve actuators valve manufacturers, valve actuators characteristics are as follows: 1) open and close rapidly, can greatly shorten the time required for opening and closing valves; 2) can greatly reduce the labor intensity of cast iron valve operator, especially for high-pressure, large-diameter valve; 3) suitable for installation in can not be manually operated or inaccessible location and pressure valves, easy to implement remotely operated, and the installation height is unlimited; 4) in favor of the automation of the entire system; 5) Power than air and liquid source readily available, its cable laying and maintenance is much simpler than compressed air and hydraulic lines. Marine valve | valve out of Hong Kong (Online) | valve provided by the Dongguan Science and Technology Co., Ltd., the Hong Kong valve. Valve Co., Ltd., Dongguan Ming Kong (www.gdmgfm.com) is Dongguan, butterfly leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Ming Kong valve leadership with the staff warmly welcome all inquiries negotiations to create a better valve out of Hong Kong in the future.