wholesale wet alarm check valveProduct DescriptionThe Alarm Check Valves are designed expressly for use in wet pipe systems. The valve will open and allow p...
Smoke Detector -Independent use: Is a high-sensitivity photoelectric smoke detector for fast detection of slow, smoldering Smoke&Fire when Danger&am...
1/2 inch 57 degree standard response k5.6 pendent fire sprinkler1. Brief introduction:Glass bulb fire sprinklers, which is the key part of automatic sprinkler ...