Needle tunnel waterproof board weld seam air tightness detector detection method

Needle tunnel waterproof board weld seam airtightness tester weld seam airtightness tester DP-SFQM-1

The inspection method is to connect the No. 5 injection needle with the pressure gauge, inflate with an air pump, stop inflating when the pressure is expressed to 0.25 MPa, keep it for 15 minutes, and the pressure drops within 10%, indicating the welding stitching. If the pressure drops too fast, there is leakage, apply soapy water to the weld, and place the center of gravity with the bubble.