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Nominal
Valve Size
Available K-factors*
gpm/psi1/2 (L/min/bar1/2)Inlet Connection Outlet Connection
1”2.8 (40), 4.2 (60), 5.6 (80)NPT, ISO7-1 Threaded
NPT, ISO7-1 Threaded1 1/4”2.8 (40), 4.2 (60), 5.6 (80), 8.0 (115), 11.2 (160)NPT, ISO7-1 Threaded
C606 Grooved2”2.8 (40), 4.2 (60), 5.6 (80), 8.0 (115), 11.2 (160), 16.8 (240)
Table A
Product Description
The Reliable Model TD Test and Drain Valve is a single-handle,
tri-position ball valve allowing both testing of the waterflow alarm
and draining of a wet-pipe fire protection system. The valves
are cULus Listed and FM Approved. The Model TD Valve has a
pressure rating of 300 psi (20.7 bar), and is factory tested at 600
psi (41.1 bar).
Model TD Test and Drain Valves have a restricted orifice with
the available K-factors listed in Table A. Nominal valve sizes are
1”, 1-1/4”, and 2” with either NPT or ISO7-1 female threaded
connections. 1-1/4” and 2” versions are also available with ANSI/
AWWA C606 grooved inlet connections. Table C identifies the
materials used in the Model TD valve.
The Model TD valve is available with an optional relief valve kit.
The relief valve kit includes a Reliable Model A relief valve along
with a hose and all fittings needed to connect the relief valve to
the Model TD valve. The Model A relief valve is UL Listed and FM
Approved for use on fire protection systems. The Model A relief
valve is available with a nominal pressure rating of 175 psi (12
bar), 185 psi (13 bar), 210 psi (14 bar), 260 psi (18 bar), or 310
psi (21 bar). See Reliable Technical Bulletin 257 for additional
information on the Model A relief valve. An optional locking
handle kit is available for use with customer supplied padlocks.
Installation
Connect the “IN” port of the Model TD valve to the wet-pipe
sprinkler system. Connect the “OUT” port to a properly sized
drain. The optional relief valve kit is installed as shown in the
photographs in this bulletin after removing the plugs in the cap
and body of the Model TD valve. The relief valve is commonly
installed after hydrostatic testing.
*Note: Valve K-factor must be equal to or less than the K-factor of the smallest K-factor sprinkler installed on the sprinkler system. For sprinkler systems
where the smallest K-factor sprinkler on the system is greater than the largest available valve K-factor, use any valve K-factor that will provide a min. flow
of 10 gpm (38 lpm) as required to operate a UL Listed Waterflow Switch.
Model TD Test & Drain Valve 1” with optional relief valve kit;
threaded inlet
Operation
To run a test, rotate the handle counter-clockwise until the “Test”
position is aligned with the ball detent. Note that rotating the valve
to the “test” position is intended to operate the sprinkler system’s
waterflow alarm. To drain, rotate the handle further until the “Drain”
position is aligned with the ball detent. Return the handle to the
“Off” position when all testing and draining functions have been
completed.
cULus Listed, FM Approved
Model TD Test and Drain Valve
300 psi (20.7 bar) pressure rated
Bulletin 618 April 2021
Model TD Test & Drain Valve 2” with optional relief valve kit;
grooved inlet
Maintenance
Reliable Model TD valve should be inspected and the sprinkler
system maintained in accordance with NFPA 25, as well as the
requirements of any Authorities Having Jurisdiction.
Guarantee
For the Reliable Automatic Sprinkler Co., Inc. guarantee,
terms, and conditions, visit www.reliablesprinkler.com.
Ordering Information
Specify the following when ordering:
Model TD Test and Drain Valve
Valve Size (1”, 1-1/4”, 2”)
K-factor (See Table A)
Inlet/Outlet Connection (Thd x Thd [all sizes], Gr x Thd
[1-1/4” & 2” sizes only])
Threads (NPT, ISO7-1)
Optional Accessories:
Relief Valve Kit [175 psi (12 bar), 185 psi (13 bar), 210 psi
(14 bar), 260 psi (18 bar), or 310 psi (21 bar)]
Locking Handle Kit
1” & 1-1/4” Valve size P/N 6990021646
2” Valve size P/N 6990021647
Figure 1
Materials Table C
Component Material
Body Brass alloy
Stem seal Nitrile
End cap seal Nitrile
Stem washer PTFE
Nest PTFE
Stem Brass alloy
Ball Chrome plated brass alloy
End cap Brass alloy
Spring detent Stainless steel
Ball detent Stainless steel
Plate washer Delrin
Function plate Brass alloy
Handle Plated carbon steel
Nut, handle Stainless steel
Sight glass seal EPDM
Sight glass Glass
Sight glass gasket PTFE
Sight glass retainer Brass alloy
Pipe plug Brass alloy
P/N 9999970528Model TD Test and Drain Valve with optional relief valve kit & locking handle kit
Table B
Valve Size A B BB C D E F G
Model TD Test and
Drain 1” Valve
3-3/8”
(86mm)
1-11/16”
(43mm)N/A 5-1/2”
(140mm)
2-9/16”
(65mm)
1-7/16”
(37mm)
5-1/4”
(133mm)
1-3/4”
(44mm)
Model TD Test and
Drain 1-¼” Valve
3-3/8”
(86mm)
1-15/16”
(49mm)
2-5/16”
(59mm)
5-1/2”
(140mm)
2-5/8”
(67mm)
1-7/16”
(37mm)
5-1/4”
(133mm)
1-3/4”
(44mm)
Model TD Test and
Drain 2” Valve
4-1/16”
(103mm)
2-7/8”
(73mm)
2-7/8”
(73mm)
7-5/8”
(194mm)
3-1/2”
(89mm)
1-15/16”
(49mm)
6-3/4”
(171mm)
1-3/4”
(44mm)
Component Dimensions (refer to Figure 1)
Bulletin 618
April 2021
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