The Result of a Combined 50 Years in the Industry
Leaking
- Tighten Bolts. Tighten all bolts gradually and equally by alternating around the flange in a diagonal manner to the recommended torque values listed below. If a water tight seal is not achieved after initial tightening, slightly tighten nuts until leak is sealed. Do not over tighten to the point where there is metal to metal contact between the rotating flange and the pipe flange. Check bolt tightness at least one week after system is started up and periodically thereafter. As any rubber-like material takes a “set” after a period of compression, the bolts may loosen and result in a broken seal. In a hot and cold water system, the bolts should be checked before changing from one medium to another.
RECOMMENDED BOLTING TORQUE (AMS/AMT Series):
Sizes: 1” thru 2” – 45 ft-lb. 2-1/2” thru 8” – 60 ft-lb. 10” thru 20” – 80 ft-lb. - Control Rods. For piping systems that are not anchored, control rods must be used. Control rods are always recommended as a safety precaution (even when system is properly anchored and guided).
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