Page 21 - Dixon Fire 2012_wm

19 Dixon Fire 2012 US: 877.712.6179 Canada: 800.786.9697
Brass Valves & Wyes A
Brass Valves & Wyes
Sprinkler Hose Valve
18-252
Sprinkler Line Tester
Test and Drain Valves
•material: cast brass valve with an aluminum wheel
•U/L listed and FM approved for automatic sprinkler and standpipe systems
•working pressure: 175 PSI (water only)
Inlet
Male NPT
Outlet
Male NH (NST) Part # Powhatan
Part #
Wt.
Lbs.
1" 1½" ASHV1015F 18-252-00002 4.0
Inlet
Female NPT
Port
Orifice Part # Wt.
Lbs.
1"
1¼"
½"
½"
TDV100
TDV125
3.2
3.4
Inlet
Female NPT Part # Wt.
Lbs.
1" SLT10050 1.0
The Test and Drain valve combines the functions of testing and draining the system into one
valve.
•A test connection not less than 1" (25 mm) in diameter, terminating a smooth bore corrosion
resistant orifice, given a flow equivalent to one sprinkler of a type having the smallest orifice
installed on the particular system, shall be provided to test each waterflow alarm device for
each system. The test connection valve shall be readily accessible. The discharge shall be to
the outside, to a drain connection capable of accepting full flow under system pressure or to
another location where water damage will not result.
• All sprinkler pipes and fittings should be installed so that the system may be drained. Three
positions OFF – TEST – DRAIN. These valves have a green indicator which illustrates an
open or closed position from 50 ft distance.
For installing the last sprinkler head on system branch lines, controls water flow for flushing
or testing of the system. When the wet pipe sprinkler system operates, the water flow in the
pipes is at a relatively low velocity. Friction loss increases with the age of the sprinkler piping,
up to 100 percent after 15 years. The accumulation of sediment and foreign objects in sprinkler
systems can be prevented by flushing the supply mains to the systems through the hydrants at
least semiannually. The National Board of Fire Underwriters recommends that sprinkler branch
line flow tests be conducted from the extremities of the branch lines (at the end of the sprinkler
system) to determine obstructions in the lines and to clean them of sediments or foreign
materials that may be carried into the system by the flow of water.
•Brass
•U/L Listed
•1" NPT female inlet
• 1" NPSH male outlet with NPSH cap and chain
• ½" sprinkler head connection
male NPT x male NH
18-252
test and drain valve
sprinkler line tester