The particularity of the valve requires its reliable quality and excellent performance. Evaluation of valve performance and performance testing, we should pay attention to the following points: 1. The valve opening and closing in the working pressure under the pressure flexible, portable, under the working pressure with a torque wrench to detect the opening torque. 2. Close the valve tightly, at 1.1 times the working pressure without leakage or leakage in line with the standard requirements (metal sealed butterfly valve), which requires pressure on both sides of the valve rotation, respectively, testing, and repeatedly opening and closing to achieve the same effect . Requires a variety of caliber, different types of valves should be in the manufacturer and testing qualified units with load hoist the life test. This test also includes the evaluation of the valve shaft sealing effect. 3, the ability to over-flow valve to be strong, especially the butterfly valve, butterfly flow resistance to be small, over-flow effective area to be large. This requires a variety of caliber, different types of valves should be measured flow coefficient. 4. The ability of the valve body to withstand water pressure should be consistent with the pipeline, which is the valve open state, the valve can withstand the pressure test requirements of the pipeline.
Dish Rack,dish drying rack,kitchen dish rack,dish drainer rack,dish rack sink,etc. The materials used are 304 stainless steel, easy to clean, never rust!
China Kichen Rack,Sink Grid,Stainless Mesh Storage Baskets,Kitchen Wire Storage, we offered that you can trust. Welcome to do business with us.
Kichen Rack is made of high quality 304 stainless steel, This kind of material steel luxury, never rust, resist corruption, easily clean, safe, healthy and durable. Prevent rust or chemicals from contaminating food and damaging health
Kitchen Dish Rack,Dish draining Rack,Dish Rack Sink,2 tier Dish Rack
Shenzhen Lanejoy Technology Co.,LTD , https://www.szsmallcompressionspring.com