Issue: A dry pipe valve is not fully sealing when it is seated and is leaking.
Does the clapper need to be replaced, or is the gasket on the valve worn out?
Solution: Most likely, there is no issue with any of the parts of the valve, including the gasket.
The gasket needs to have a good "pucker" to sit properly in the valve seat. Over time the pucker on the gasket will relax, and the valve may have issues fully sealing. To fix this, simply tighten the screws on the underside of the clapper that hold the gasket in place. The gasket should pucker (pull away from the clapper) about an 8th of an inch. This should fix most seating issues.
If issues persist, contact Globe for further instructions.
Issue: Issue: Old Globe O-ring sprinklers are installed in a system.
Is it okay to leave these sprinklers in the system?
Solution: If the sprinkler is a model "J" dry sprinkler, or if the sprinkler shows visible signs of leaking or corrosion, it should be replaced. Contact Globe for further instructions.
Issue: Issue: Can residential sprinklers be installed in ceilings with slopes greater than 2 and 12?
Can residential sprinklers be installed under beams up to 14 inches down from the ceiling?
Solution: Yes they can as long as the room is not greater than 600 sq.ft. in area and the maximum ceiling height is not greater than 24 Ft. in height.
See the Globe residential sprinkler installation guide or NFPA 13D, 2013 Edition, Section 10.2.1 for more details.
Issue: Issue: The data sheet for a sprinkler that is being used does not have specific design criteria designating spacing or density needed for the sprinkler to properly function.
Where can this information be found?
Solution: When a data sheet does not have design information, this means the information can be found in NFPA 13, 13R, or 13D in the appropriate section for which that sprinkler is being installed.
For further information on design and discharge criteria, contact Globe.