Specifications

1. Install ½” nipple (#37, Fig. 5 or #39, Fig. 6) in tapped
opening marked “TEST.” Note: If interference occurs
between the supply gauge and the control valve,
the 1/4” plug (#54, Fig. 5 or #54, Fig. 6) in the open-
ing marked “SUPPLY” may be swapped with: the
1/4” nipple (#35, Fig. 5), angle valve (#10, Fig. 5) and
gauge (#69, Fig. 5) for the 2” (50mm), 2-1/2” (65mm),
76mm and 3” (80mm) valve sizes; 1/4” nipple (#34,
Fig. 6), 1/4” elbow (#25, Fig. 6), 1/4” nipple (#35,
Fig. 6), 3-way valve (#66, Fig. 6) and the gauge (#68,
Fig. 6) for the 4” (100mm), 165mm and 6” (150mm)
valve sizes; 1/4” nipple (#35, Fig. 6), 3-way valve
(#66, Fig. 6) and the gauge (#68, Fig. 6) for the 8”
(200mm) valve size, in the trim installed in the open-
ing marked “TEST”.
2. Install ½” nipple (#40, Fig. 5 or #36, Fig. 6) in tapped
opening marked “ALARM” and connect balance of this
trim line.
3. Install ¼” plug (#54, Fig. 5 or #54, Fig. 6) in tapped open-
ing marked “SUPPLY.” Note: If interference occurs be-
tween the supply gauge and the control valve, the
1/4” plug (#54, Fig. 5 or #54, Fig. 6) in the opening
marked “SUPPLY” may be swapped with: the 1/4”
nipple (#35, Fig. 5), angle valve (#10, Fig. 5) and
gauge (#69, Fig. 5) for the 2” (50mm), 2-1/2” (65mm),
76mm and 3” (80mm) valve sizes; 1/4” nipple (#34,
Fig. 6), 1/4” elbow (#25, Fig. 6), 1/4” nipple (#35, Fig.
6), 3-way valve (#66, Fig. 6) and the gauge (#68, Fig.
6) for the 4” (100mm), 165mm and 6” (150mm) valve
sizes; 1/4” nipple (#35, Fig. 6), 3-way valve (#66, Fig.
6) and the gauge (#68, Fig. 6) for the 8” (200mm) valve
size, in the trim installed in the opening marked.
4. Install ½” nipple (#36, Fig. 5 or #36, Fig. 6) in tapped
opening marked “OUT” and connect balance of this
trim line.
5. Install ¼” inline check valve (#16, Fig. 5 or #15, Fig. 6)
in tapped opening marked “IN” and connect balance of
this trim line. Supply line must be connected to the inlet
of the control valve for each Deluge Valve as shown.
Caution: Over tightening check valve can cause a re-
striction in flow that may prevent the valve from “setting
up”.
6. Install 1¼” Nipple (#46, Fig. 5) or 2” nipple (#46, Fig. 6)
in tapped drain opening and connect balance of this
trim line.
7. Install ¾” x ¼” reducing bushing (#50, Fig. 5 or #50, Fig.
6) in the lower-most tapped opening at the rear of the
Deluge Valve and connect the balance of this trim line.
8. Install ¾” nipple (#42, Fig. 5 or #41, Fig. 6) in the upper-
most tapped opening at the rear of the Deluge Valve
and connect the balance of this trim line.
Dry Pilot Line Single Interlock Preaction Trim
Dry pilot line single interlock preaction trim is used in water
sensitive areas which are subject to freezing conditions or to
obtain installed sprinkler heights and pipe lengths greater
than allowed for wet pilot line trim.
Dry pilot operation uses a pilot line of closed sprinklers
(Model F1-FTR) containing air under pressure located in the
area to be protected. This pressurized line is connected to a
Model LP Dry Pilot Line Actuator. The dry pilot line actuator
functions very much like a miniature dry pipe valve. In ar-
eas where moisture-laden air could cause freezing or other
problems in the dry pilot line, the use of a cylinder of dry
compressed gas such as nitrogen is suggested. Approved
gas handling regulators and connections are then recom-
mended. When one of the closed sprinklers on the dry pilot
line actuates, the air pressure is reduced, thus opening the
Model LP Dry Pilot Line Actuator, which releases the Deluge
Valve. NFPA 72 or the Authority Having Jurisdiction should
be consulted for spacing and elevation requirements of the
pilot line sprinklers.
The Dry Pilot Line Trim, shown in Figures 7 and 8, includes
gauges to read the air and water pressure, a low air pres-
sure switch, a pressure relief valve, a Model LP Dry Pilot Line
Actuator, and connections for the dry pilot line of detectors.
Dry Pilot Line Trim installation on Model DDX Deluge Valves
uses eight tapped openings for trim connections. Each
opening and its function are indicated on Fig. 7 and Fig. 8.
Using Fig. 7 and Fig. 8 as reference, the recommended trim
installation is as follows:
1. Install ½” nipple (#39, Fig. 7 or #41, Fig. 8) in tapped open-
ing marked “TEST”. Note: If interference occurs between
the supply gauge and the control valve, the 1/4” plug
(#58, Fig. 7 or #58, Fig. 8) in the opening marked “SUP-
PLY” may be swapped with: the 1/4” nipple (#37, Fig. 7),
angle valve (#11, Fig. 7) and gauge (#73, Fig. 7) for the
2” (50mm), 2-1/2” (65mm), 76mm and 3” (80mm) valve
sizes; 1/4” nipple (#36, Fig. 8), 1/4” elbow (#27, Fig. 8),
1/4” nipple (#37, Fig. 8), 3-way valve (#70, Fig. 8) and
the gauge (#72, Fig. 8) for the 4” (100mm), 165mm and
6” (150mm) valve sizes; 1/4” nipple (#37, Fig. 8), 3-way
valve (#70, Fig. 8) and the gauge (#72, Fig. 8) for the 8”
(200mm) valve size, in the trim installed in the opening
marked “TEST”.
2. Install ½” nipple (#42, Fig. 7 or #38, Fig. 8) in tapped open-
ing marked “ALARM” and connect balance of this trim line.
3. Install ¼” plug (#58, Fig. 7 or #58, Fig. 8) in tapped opening
marked “SUPPLY.” Note: If interference occurs between
the supply gauge and the control valve, the 1/4” plug
(#58, Fig. 7 or #58, Fig. 8) in the opening marked “SUP-
PLY” may be swapped with: the 1/4” nipple (#37, Fig. 7),
angle valve (#11, Fig. 7) and gauge (#73, Fig. 7) for the
2” (50mm), 2-1/2” (65mm), 76mm and 3” (80mm) valve
sizes; 1/4” nipple (#36, Fig. 8), 1/4” elbow (#27, Fig. 8),
1/4” nipple (#37, Fig. 8), 3-way valve (#70, Fig. 8) and
the gauge (#72, Fig. 8) for the 4” (100mm), 165mm and
6” (150mm) valve sizes; 1/4” nipple (#37, Fig. 8), 3-way
valve (#70, Fig. 8) and the gauge (#72, Fig. 8) for the 8”
(200mm) valve size, in the trim installed in the opening
marked “TEST”.
4. Install ½” nipple (#38, Fig. 7 or #38, Fig. 8) in tapped open-
ing marked “OUT” and connect balance of this trim line.
5. Install ¼” inline check valve (#17, Fig. 7 or #16, Fig. 8) in
tapped opening marked “IN” and connect balance of this
trim line. Caution: Over tightening check valve can cause
a restriction in flow that may prevent the valve from “setting
up”.
27.