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Disassembly/Reassembly (to reassemble, follow procedures in reverse)
Part & No. JA3/JAF3 JA5/JAF5 JA7
Balancing
Line Plug 23
(When connecting
the line for the
first time)
Snap Ring 27
Screen 12
Screen Holder
Retainer 26
Screen Holder
25
Float 3
Guard Bushing
19
Valve Seat
Holder Nut 8
Holder Nut Gasket 4
Valve Seat
Holder 20
Valve Seat
Holder
O-Ring* 5
Snap Ring 21
(for Valve Seat
Holder Nut)
Washer 22
Valve Seat 6
Split Pin* 17
Plunger* 18
Coil Spring* 16
Needle* 14
Needle
O-Ring* 15
*Detach / Reassemble only when the needle is replaced
**Use silicone grease (for heat resistant grease)
" " indicates which models contain which parts
Tightening Torque (T) and Distance Across Flats (D)
(T) N . m
Model
(lbf . ft)
JA3/JAF3
JA5/JAF5
JA7
* Torque values with sealing tape wrapped 3 ~ 3.5 turns around the threads.
** Option for JA3/ JAF3, JA5/ JAF5
If drawings or other special documentation were supplied for the product, any torque given there
takes precedence over values shown here.
Disassembly
Remove with a wrench
Pinch the insides together
and remove from body
Remove by lifting straight
up and out while turning
Remove by lifting up and out Make sure thet correct side is facing up
Remove by lifting up and
out
Remove without bending Place on the ledge inside the body,
Remove, being careful not
to scratch the polished surface
Use fingers to remove from
the valve seat holder nut
Remove with a socket
wrench
Push out from inside the body
toward the valve seat holder nut
Be careful not to damage
the O-ring as it is made of
rubber
Pinch the insides together
and remove from the valve
seat holder (Fig. A)
Be careful not to damage
the rubber valve seat
Be careful not to lose
Remove from needle
Remove without bending
Be careful not to damage
the O-ring as it is made
of rubber
Cover Bolt (13)
Valve Seat Holder Nut (8)
(T) N . m
(D) mm
(lbf . ft)
(in)
50
17
50
/
(37)
(
21
)
(37)
32
80
22
80
/
7
(59)
(
)
(59)
8
70
17
120
/
21
(51)
(
)
(88)
32
(Connect the pressure-balancing line)
When the pressure-balancing line is not
necessary, wrap threads with sealing tape,
consult the table of tightening torques and
tighten to the proper torque (see below)
Insert securely into the snap ring
groove in the body
Turn gently while inserting, make sure the top
of the screen does not stick up out of the body
Place on the screen holder without tilting
making sure the rounded side is on top
Insert, being careful not to scratch or
misshape
Use fingers to tighten loosely
Consult the table of tightening torques and
tighten to the proper torque (see below)
—
Replace with a new gasket if damaged
Pushing it in until it contacts the
stopper inside
Coat with heat resistant grease**; replace with a
new O-ring if warped or damaged; fit securely
into the groove in the valve seat holder
Insert securely into groove up against the
washer be sure that the break in the snap
ring lines up with the slot in the groove
—
Replace with a new valve seat if sealing
surfaces are warped or damaged
—
Coat with heat resistant
grease**; replace with a
new O-ring if warped or
damaged; fit securely into
the groove in the needle
Balancing Line Plug (23)
(T) N . m
(D) mm
(lbf . ft)
(in)
24
30*
/
(
15
)
(22*)
16
32
30*
/
1
(
1
)
(22*)
4
36
30*
/
13
(
)
(22*)
1
32
̶ 11 ̶
Reassembly
—
Fig. A
—
—
Valve Seat
—
Holder
—
Snap Ring
Pinch the insides
together and remove
Drain Plug (9)
(T) N . m
(D) mm
(D) mm
(lbf . ft)
(in)
12
35**
/
15
(
)
(26**)
(
13
32
12
35**
/
15
(
)
(26**)
(
32
12
30*
/
15
15
(
)
(22*)
(
32
〜 〜
1 N . m
10 kg . cm
(in)
21
/
)
16
21
/
13
)
16
12
/
)
32
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