Technical data

TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services 877-384-5464 Fax: [phone] Email: [e-mail]
PREACTION SPRINKLER
SYSTEM
Page 54
February, 2010
Figure 36
Water Control Valves
Section 7.3.1.2 of NFPA 13
† requires the automatic water control valve to be provided with hydraulic,
pneumatic, or mechanical manual means for operation that is independent of detection devices and of the
sprinklers (Figure 36).
Valve Rooms and Protection Against Freezing
The deluge valve, system water control valves and supply pipes must be protected against freezing. A
heated enclosure may be required. NFPA 13 section 7.3.1.8.2† requires valve rooms to be lighted and
heated with a permanent heat source, such as a baseboard or unit heater. Note: Heat tape is not permitted
to be used in lieu of heated valve enclosures to protect deluge valves and supply pipe against freezing.
Pressure Gauges
NFPA 13† requires listed pressure gauges to be installed below the deluge valve and on the air supply to
deluge valves. Refer to NFPA 13 section 8.17.3† for additional information on gauges.