Locate this valve’s drain cap and open the valve to drain the last of the water left between the irrigation system and the backflow device. If you plan to hire professionals to perform a blow ...

7. After you are done blowing out the sprinkler system, turn all the ball valves and petcocks to a 45-degree position so they are half open and half closed. This will allow any remaining water to ...

The main drain of an automatic sprinkler system is actually the water flow control valve. It's important to test the functioning of this value at least once per year to ensure proper water flow ...

Automatic Draining: Some sprinkler systems will allow you to forgo the process of manual drainage; instead, they’ll automatically drain the water after you shut off the main valve.

Close them again once finished. Automatic Draining Some sprinkler systems can automatically drain, which is very useful. All you need to do is turn on the sprinklers while the water is shut off.

AGF Manufacturing announced the PURGENVENT Air Venting Valves designed to remove excess air from sprinkler pipes for the new NFPA 13 venting requirements. Malvern, PA – July, 2017 – AGF ...

AGF revolutionized the fire sprinkler industry with the Model 1000 TESTanDRAIN® single valve inspector’s test which eliminated the time and space consuming traditional loop assembly.