Safety valves, valve Weifang, China Everbright valve (Certified Merchant) Ltd provided by Shandong Everbright valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) is specialized in the "valve" of the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Manager Ma. Valve installation and maintenance should note the following construction, installation points 1), the installation location, height, and export orientation must meet the design requirements, note the direction of media flow valve should be consistent with the direction of the arrow mark, the connection should be firmly tight. 2) visual inspection of the safety valve must be installed before the valve, the valve plate should comply with the provisions of the current national standard GB 12220 "Universal Valve logo." For working pressure greater than 1.0 MPa and the role played off the main pipe valves should be installed before the strength and rigorous performance tests Shandong valve, passing behind the prospective use. Strength test, the test pressure is 1.5 times the nominal A40Y-C spring safety valve, valve manufacturers duration of not less than 5min, the valve housing, packing should be no leakage as qualified. Tightness test, the test pressure for the nominal pressure of 1.1 times; the test duration in line with the requirements of GB 50243 1. All kinds of safety valve should be installed vertically. Standard safety valve associated with the change in the world is very large, and many of them are part of the boiler or pressure vessel belonging to the relevant specifications. Just an overview of some of standards performance requirements, and the variation range of the basic structural details, but did not give specific requirements for size, and other aspects of the throat diameter. Others only with installation and application related. Cross each other in many markets using several standard safety valve is also very common.