Specifications

36.
Using Reliable P/N 6881603000 Seat Wrench for
2” (50mm), 2½” (65mm), 76mm and 3” (80mm)
valve sizes, Reliable P/N 6881604000 for 4”
(100mm) valve size, Reliable P/N 6881606000
for the 6” (150mm) and 165mm valve sizes or
Reliable P/N 6881608000 Seat Wrench for 8”
(200mm) valve size, remove the seat by un-
screwing. This will loosen the seat-clapper-
mounting ring subassembly. Reach into the
valve and grasp the seat and remove it from the
valve. Then remove the clapper-mounting ring
subassembly from the valve. Visually examine all
components of the seat-clapper-mounting ring
subassembly replacing any component that ap-
pears damaged. New O-rings (#23 & #24, Fig.
13 and #2, Fig. 13 (8” (200mm) valve size only))
should always be used for reassembly.
For Valve Sizes: 4” (100mm), 165mm, 6”
(150mm) with Drop-In Seat Confi guration
only, Refer to Fig. 8 and Fig. 14:
At the rear of the valve, disconnect the water
column drain trim section starting with the el-
bow connector (#21, Fig. 8). Then remove the
¼” globe valve (#32, Fig. 8), followed by the
¾”x¼” reducing bushing (#53, Fig. 8). Remove
the retaining ring (hand hole cover side) from
the clapper hinge pin (#14, Fig. 14) and push
this pin through the condensate drain port and
remove the clapper subassembly. Remove the
four retaining screws (#24, Fig. 14) holding the
seal faceplate assembly (#5, Fig. 14). Inspect
the clapper (#3, Fig. 14) visually before installing.
Apply a small amount of silicone based lubricant
to the four retaining screws. Install a new seal
faceplate assembly. Torque the retaining screws
to approximately 40 inch-pounds and reassem-
ble. If the seat (#2, Fig. 14) is damaged or it is
suspected that the leakage is through the lower
o-ring (#11, Fig. 14), the seat-clapper subassem-
bly is easily removed as a unit as follows:
Using a 5/16” Allen wrench, remove the two 3/8”
NPT pipe plugs (#19, (not shown) Fig. 14) locat-
ed on the side chamber side of the Model DDX
deluge valve. The seat-clapper subassembly is
retained by two locking pins (#17, (not shown)
Fig. 14). The centers of these pins have a ¼”-20
threaded hole. Remove the two locking pins by
engaging them with a ¼”-20 screw and pulling
them out (the two locking pins are not externally
threaded, so turning them with the attached ¼”-
20 screw or threaded rod is not recommended. A
proven method is to use ¼”-20 threaded rod with
a locknut on the unassembled end. Grab hold of
the locknut with a pliers or vise-grips and tap the
pliers or vise-grips in the direction away from the
Deluge Valve. Doing so should pull the locking
pins out of the Deluge Valve. With the clapper
(#3, Fig. 14) in the closed position (not latched),
dislodge the clapper-seat subassembly from the
valve body by inserting two slotted screwdrivers
under the lever and clapper mounting ears and
pry up until the clapper-seat subassembly is free
from its bore. Reach into the valve and grasp
the clapper-seat subassembly from the sides.
Making sure the clapper is in the closed position
(see Fig. 1), lift up and rotate the clapper-seat
sub assembly clockwise 90 degrees so that the
lever side of the assembly is facing up towards
the outlet of the deluge valve. Next, rotate the
clapper-seat sub assembly 90 degrees about
the centerline of the valve so that the clapper is
facing the hand hole opening and the lever is still
facing the outlet of the deluge valve. Then rotate
the clapper-seat sub assembly 90 degrees, so
that the clapper is now facing the outlet of the
deluge valve and the lever is now facing the
back of the valve. Pull the clapper-seat sub as-
sembly out through the hand hole opening by the
hinge pin side. Rotating the seat-clapper subas-
sembly up as it is being removed will help it slide
out more easily since the lever will prohibit it from
sliding straight out. Visually examine all compo-
nents of the clapper-seat subassembly replacing
any component that appears damaged. New o-
rings (#11, Fig. 14) should always be used for
reassembly.
Reassembly:
For Valve Sizes: 2” (50mm), 2½” (65mm),
76mm, 3” (80mm), 8” (200mm) and 4”
(100mm), 6” (150mm) & 165mm with Screw-In
Seat Confi guration only, Refer to Fig. 13:
Clean the bore of the valve body. Lubricate the
bore with O-ring grease. Lubricate and install the
O-rings (#23 & #24, Fig. 13) onto the seat. Lubri-
cate and install the mounting ring o-ring (#2, Fig.
13) into the body (8” (200mm) valve size only). In-
sert the clapper-mounting ring subassembly into
the handhold opening of the Deluge Valve using
caution to not damage or dislodge the mounting
ring o-ring (#2, Fig. 13)(8” (200mm) valve size
only). Align the mounting ring so that the Lever
(#15, Fig. 13) is near the pushrod (#25, Fig. 13)
and the mounting ring (#5, Fig. 13) “ears” are be-
tween the tabs of the valve body (#1, Fig. 13). In-
sert the seat (#29, Fig. 13) into the valve body (#1,
Fig. 13) and through the clapper-mounting ring
subassembly. Start to tread the seat (#29, Fig.
13) into the body by hand, then tighten the seat
(#29, Fig. 12) with Reliable P/N 6881603000 Seat
Wrench for 2” (50mm), 2½” (65mm), 76mm and
3” (80mm) valve sizes, Reliable P/N 6881604000
Seat Wrench for 4” (100mm) valve size, Reliable
P/N 688106000 Seat Wrench for 6” (150mm and
165mm valve sizes or Reliable P/N 6881608000
Seat Wrench for 8” (200mm) valve size until it
bottoms out on the mounting ring (#5, Fig. 13).
Verify that the seat-clapper-mounting ring subas-
sembly is in the fully down position between the