Production of central air-conditioning products at the end of a lot of manufacturers, then there will be a product quality standards, qualified products need to have three permits, three certificates, including manufacturer's certificate, the fire safety organs of the product sales license and the National Fire Building Materials Quality Supervision and Inspection Center Of the product inspection report. So what is the quality requirements of the fire damper?
1, Temperature sensor performance test
For the fire valve, smoke valve temperature sensor, respectively, by constant temperature water bath, oil bath of the specified temperature, through the action and action test to test whether it can be required to accurately shut down the temperature.
2, Close the reliability test
In the test bench to close the operation 250 times, the specimen should be able to open from the flexible and reliable location, the parts should be no obvious wear and tear, deformation and affect the sealing performance of the damage. In order to test the reliability of the closure.
3, Salt spray test
The test specimen in the salt spray box spray spray test, the specimen should be able to reliably close from the open position, in order to check the valve in the actual project in the anti-corrosion ability.
4, Air leakage test
Before and after the valve in the specified pressure conditions, the specimen unit area of the air leakage is not greater than 700Nm3 / (h • m2), in order to check the valve closed after the closed performance.
5, Fire test
Through the fire test, according to the specified time within the closing capacity and the amount of air leakage per unit area of two indicators to determine the fire resistance of the valve.
