Water Supply Control Valve; Grooved Couplings - Viking ESFR Technical Data Manual

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The Viking Corporation, 210 N Industrial Park Road, Hastings MI 49058
Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-945-4495 Email: techsvcs@vikingcorp.com

1. Water Supply Control Valve

A listed indicating valve shall be installed on the upstream side of the deluge valve. The valve
shall not close in less than 5 seconds when operated at maximum possible speed from the fully
opened position. Valves shall conform to the requirements of NFPA 13 (8.16.1.1.2 2007 ed.):
8.16.1.1.2* Supervision.
8.16.1.1.2.1 Valves on connections to water supplies, sectional control and isolation valves, and
other valves in supply pipes to sprinklers and other fixed water-based fire suppression systems
shall be supervised by one of the following methods:
1) Central station, proprietary, or remote station signaling service
2) Local signaling service that will cause the sounding of an audible signal at a constantly at-
tended point
3) Valves locked in the correct position
4) Valves located within fenced enclosures under the control of the owner, sealed in the open
position, and inspected weekly as part of an approved procedure

2. Grooved Couplings

In order to prevent leaks and preserve the antifreeze solution, it is imperative that grooved pipe
ends are smooth, round, and free of burrs, flat spots, and weld seam imperfections. Also, pipes
should be capped to prevent contaminant during shipping, storage, etc. Verify that any gasket
materials used in couplings, etc. are compatible with the antifreeze solution. Refer to the anti-
freeze solution technical data page.
Where grooved couplings are used in the system, "flush seal" gasket, low temperature EPDM
rubber and lube are required. Gaskets: grade "E" EPDM, NSF-61 Certified, -40 °F to 230 °F (ser-
vice temperature range) (-40 °F to 110 °F) recommended for water service, diluted acids, alkalys
solutions, oil-free air and many chemical services. GRUVLOK Xtrema Lubricant is required for
freezer applications. In order to pervent leaks and preserve the antifreeze solution, the grooved
pipe ends must be smooth, round, and free of burrs.
TECHNICAL DATA
ESFR PRE-PRIMED SINGLE
INTERLOCK PREACTION
COLD STORAGE SYSTEM
Figure 19 - Water
Supply Control Valve
March 7, 2008