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Numerous common methods are used to brace Fire Sprinkler Pipe. A few <br /> acceptable methods include: use of a standard band hanger by positioning <br /> the threaded support rod to 1/16-inch above the pipe(however, it is important <br /> that the rod does not contact the pipe), a wrap around U-hanger, a special <br /> escutcheon which prevents upward movement of the sprinkler through the <br /> ceiling or bend hangers with Surge Restraints to provide surge protection for <br /> the system. <br /> Pipe hangers are available that are tested and UL Listed for fire sprinkler <br /> service. These hangers comply with NFPA 13 requirements for use with <br /> CPUC fire sprinkler piping systems. The following illustrations depict several <br /> ofthese. <br /> Sand Hanger - designed to support CPVC piping systems when used in <br /> conjunction with a hanging steel threaded rod that is suspended from a ceiling <br /> or other flat, horizontal surface. The threaded rod must be leveled properly <br /> before installing the hanger and restraint. <br /> 1116" <br /> Surge Restraint - when installed with the Sand Hanger, as shown below, <br /> provides surge protection for the system. <br /> One Hole rap-Around Strap designed to support CPUC piping systems <br /> only when the hanger tab is in the vertical position, and the screw-type <br /> fastener is in the horizontal position.The one-hole strap can be used as a pipe <br /> restrainer when the hanger tab is in the downward position, but it cannot be <br /> used as a hanger to hold any weight of the system. In addition, the one-hole <br /> strap can be used as a piping system guide when the system lies on top of the <br /> beam, and the beam supports the system's weight.The one-hole strap is not <br /> intended to support the CPUC piping system from under a ceiling or any other <br /> flat, horizontal surface. For this application, install two-hole strap. <br /> Guide <br /> Hanger <br /> Page 40 a 2010 Spears'Manufacturing Company FG-3-1010 <br />