24
( )
21
( )
12
( )
17
( )
* 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.
/
8
7
/
32
15
/
16
13
/
4
1
1
1 N.m
≈
10 kg.cm
" " indicates which models contain which parts
Part & No. JA3/JAF3 JA5/JAF5
JA7
Remove with a wrench
Pinch the insides together
and remove from body
During Disassembly
During Reassembly
Disassembly/Reassembly
(to reassemble, follow procedures in reverse)
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
—
(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
Remove by lifting straight
up and out while turning
Turn gently while inserting, make sure the top
of the screen does not stick up out of the body
Use fingers to remove from
the valve seat holder nut
Use fingers to tighten loosely
Pinch the insides together
and remove from the valve
seat holder (Fig. A)
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
Be careful not to lose
Remove from needle
—
Be careful not to damage
the O-ring as it is made
of rubber
Remove without bending
Coat with heat resistant
grease**; replace with a
new O-ring if warped or
damaged; fit securely into
the groove in the needle
Be careful not to damage
the rubber valve seat
Replace with a new valve seat if sealing
surfaces are warped or damaged
Be careful not to damage
the O-ring as it is made of
rubber
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
Push out from inside the body
toward the valve seat holder nut
Pushing it in until it contacts the
stopper inside
—
—
—
—
—
—
—
Replace with a new gasket if damaged
Remove with a socket
wrench
Consult the table of tightening torques and
tighten to the proper torque (see below)
Remove, being careful not
to scratch the polished surface
Insert, being careful not to scratch or
misshape
Remove by lifting up and out Make sure thet correct side is facing up
Remove without bending
Place on the ledge inside the body,
making sure the rounded side is on top
Remove by lifting up and
out
Place on the screen holder without tilting
*Detach / Reassemble only when the needle is replaced
**Use silicone grease (for heat resistant grease)
Tightening Torque (T) and Distance Across Flats (D)
Fig. A
Valve Seat
Holder
Snap Ring
Pinch the insides
together and remove
/
32
21
/
16
15
/
32
15
/
16
13
/
32
21
/
32
15
/
32
15
/
32
13
1
(T) N.m
(lbf.ft)
(D) mm
(in)
Model
JA3/JAF3
50
(37)
50
(37)
30*
(22*)
35**
(26**)
32
( )
21
( )
12
( )
22
( )
JA5/JAF5
80
(59)
80
(59)
30*
(22*)
35**
(26**)
36
( )
12
( )
12
( )
17
( )
JA7
70
(51)
120
(88)
30*
(22*)
30*
(22*)
Cover Bolt (13)
(T) N.m
(lbf.ft)
(D) mm
(in)
Valve Seat Holder Nut (8)
(T) N.m
(lbf.ft)
(D) mm
(in)
Balancing Line Plug (23)
(T) N.m
(lbf.ft)
(D) mm
(in)
Drain Plug (9)
