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Bulletin 426 Rev. A <br /> co <br /> ® Model MP LL <br /> bi CD <br /> (Multi-Purpose) N <br /> 1 " Residential Riser <br /> D <br /> Specifically Listed and Certified <br /> for Providing Water - Flow Alarm <br /> on Multipurpose Residential Fire <br /> Sprinkler Systems that serve <br /> both Domestic Water and Fire <br /> Protection. <br /> Features <br /> 1. Designed to alarm on single fire sprinkler operation and <br /> not during normal household water usage. <br /> 2. Potable-water safe to NSF/ANSI Standard 61 ANNEX G. <br /> 3. Water-flow Detector is preset to operate at 12 gpm ± 1 <br /> gpm(45.4 Lpm ±3.8 Lpm), and is factory installed with <br /> a weather—proof metal cover. <br /> 4. Dedicated cULus Listed water-flow detector assures <br /> optimum sensitivity while the adjustable delay device <br /> minimizes false alarms caused by pressure surges or <br /> short periods of water usage above 12 gpm. Fig. 1 <br /> 5. Switch can be wired for 24 VDC or 125/250 VAC operation. <br /> 6. Stainless steel 1" (25mm) manifold with NPT or Metric <br /> Inlet and Outlet Threads. B <br /> 7. Factory assembled and tested. <br /> 8. Rated working pressure not to exceed 175 psi. <br /> r <br /> 9. UL Listed Assembly. <br /> 10. When the Model MP LL Riser is utilized in sprinkler sys- <br /> tems with sprinklers having K-factors less than 4.4,there <br /> must be a minimun of 15 psi of operating pressure at the (o C <br /> system's most remote sprinkler. <br /> Listings & Approvals A o <br /> 1. Listed by Underwriters Laboratories Inc. (cULus) <br /> 2. NSF-61 Certified to NSF/ANSI Standard 61 ANNEX G <br /> (Less than 0.25% Lead content). <br /> Product Description r <br /> The Multi-Purpose-Riser comes factory assembled with <br /> the necessary accessories for a cost effective, complete 426FG02 <br /> riser assembly. <br /> Cast-on lettering identifies manifold size and flow direc- Fig. 2 <br /> tion. This Riser can be used safely where domestic water Technical Data: <br /> and fire protection water are combined. <br /> The water flow detector range, preset to 12 gpm ± 1 Description Multi Purpose Dimensions <br /> Riser Trim <br /> Manifold ns <br /> gpm, is designed to protect the system from false trip- Size: inch (mm) weight* <br /> ping when multiple household fixtures are in use. When A B c D Lbs k <br /> the Model MP Riser is utilized in sprinkler systems with <br /> sprinklers having K-factors less than 4.4, there must be �'�(25mm) 11 (280) 10(254) 9.5(241) (70) 5.7(2.1) <br /> a minimun of 15 psi of operating pressure at the system's Support Bracket Kit(optional)-1 lb(0.45 kg) <br /> most remote sprinkler. <br /> Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523 <br />