SELCOM Elevator Components, SELCOM Elevator Parts Realever Enterprise Limited , https://www.cnelevator-parts.com
Valve performance and testing
The particularity of the valve requires its reliable quality and excellent performance. Evaluation of valve performance and performance testing, should pay attention to what time: 1. The valve opens and closes flexibly and lightly under the working water pressure, and detects the opening torque with a torque wrench under the working water pressure. 2. Valve closed tight, at 1.1 times the working pressure does not leak or leak in line with 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. Requirements of 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. Valve over-flow ability to be stronger, especially the butterfly valve, butterfly flow resistance is smaller, 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 test pressure requirements of the pipeline. The particularity of the valve requires its reliable quality and excellent performance. Evaluation of valve performance and performance testing, should pay attention to what time: 1. The valve opens and closes flexibly and lightly under the working water pressure, and detects the opening torque with a torque wrench under the working water pressure. 2. Valve closed tight, at 1.1 times the working pressure does not leak or leak in line with 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. Requirements of 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. Valve over-flow ability to be stronger, especially the butterfly valve, butterfly flow resistance is smaller, 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 test pressure requirements of the pipeline.