Hey dude,
The rules are:
1. An approved vacuum breaker shall be installed on a loop extending at least twelve (12") inches vertically above at least one sprinkler head in each zone and twelve (12") inches above the surrounding ground.
2. The main control valve shall be installed so that it will operate when the various sections are out of service. An electrically controlled valve shall be used.
3. A weep hole shall be located in the distribution piping to reduce pressure in the line so that the vacuum breaker will open at least once each day. The weep hole shall be provided with satisfactory free drainage, be free of obstruction and be located at least twelve (12") inches below the vacuum breaker. A 1/16" brass tap may serve as the weep hole.
4. A double check valve assembly listed as acceptable by the New York State Department of Health shall be installed between the main valve and the vacuum breaker.
Hey dude,
The rules are:
1. An approved vacuum breaker shall be installed on a loop extending at least twelve (12") inches vertically above at least one sprinkler head in each zone and twelve (12") inches above the surrounding ground.
2. The main control valve shall be installed so that it will operate when the various sections are out of service. An electrically controlled valve shall be used.
3. A weep hole shall be located in the distribution piping to reduce pressure in the line so that the vacuum breaker will open at least once each day. The weep hole shall be provided with satisfactory free drainage, be free of obstruction and be located at least twelve (12") inches below the vacuum breaker. A 1/16" brass tap may serve as the weep hole.
4. A double check valve assembly listed as acceptable by the New York State Department of Health shall be installed between the main valve and the vacuum breaker.
Posted by: kalli at November 27, 2007 5:05 AM in response to Sprinkler Test- HPD? FDNY? Plumber??