Instruction No EF 5000 E
01/2004
13
D.
Coat the upper guide bushing (21) spacer tube
(20) and the shaft splines (plug side) with
recommended lubricant.
E.
Insert the spacer tube (20) over the lubricated
part of the shaft.
F.
Place upper guide bushing (21) on the shaft (19).
G.
Place plug (4) in body so it rests on the seat.
H.
Insert the shaft sub-assembly into the body (1)
and engage plug (4) and lower guide
bushing (22).
Note: The shaft (19) should be inserted into the
plug so that when the plug is seated, the slot at
the outer end of the shaft is perpendicular to the
flow through the valve.
In case of 35000 SB, separable bonnet version,
follow the operations described from O to W.
I.
Install the packing box ring (23), bevel side out,
over the shaft (19) and into the valve bonnet
being sure that the hole in the ring is aligned with
the threaded port in the bonnet.
J.
Apply a suitable lubricant to the threads of the
safety pin (16) and screw into the body neck and
tighten.
K.
Install packing (17) insuring that the skive cut of
each piece of packing is offset approximately
120° from that of the adjacent piece of packing.
Note: Sizes 1" thru 3" use 7 pieces of packing;
sizes 4" thru 12" use 6 pieces of packing.
L.
Install packing follower (15) rounded, bevel side
out.
M.
Proceed to section 10.6 on seat ring alignment.
For O to W for separable bonnet design only:
N.
If necessary, install the studs (103) in the
bonnet (102).
O.
Install the stop ring (100).
P.
Place the gasket (101) in the groove of the bonnet.
The old gasket (101) must not be re-used.
Q.
Place the bonnet with the studs on the body and
screw the nuts (104).
R.
Tight the nuts (104) according the table figure 11.
Note: It is important to tighten the nuts step by
step, during the tightening the bonnet flange
must keep the shaft axis aligned.
S.
Install packing (17) insuring that the skive cut of
each piece of packing is offset approximately
120° from that of the adjacent piece of packing.
Note: Sizes 1" through 3" use 7 pieces of
packing; sizes 4" through 12" use 6 pieces of
packing.
T.
Install packing follower (15) rounded, bevel side
out.
U.
Proceed to section 10.6 on seat ring alignment.
10.6 SEAT RING ALIGNMENT
Aligning the seat ring (2) and plug (4) is required
whenever the seat ring or plug have been replaced
or disassembled. Proceed as follows:
A.
Place valve on flat surface with retainer (3) and
seat ring (2) facing up.
Note: The casting marks (=) indicate the seat
ring end of the body.
B.
Remove the retainer ring (3) and the seat
ring (2).
C.
Apply a thin coat of sealant to the seat ring
shoulder that engages the body and replace seat
ring (2).
D.
Apply a small amount of thread lubricant to the
seat ring retainer threads and install seat ring
retainer (3) and hand tighten only.
E.
Replace lever (34) on valve shaft (19) and
tighten lever capscrew (49).
F.
Using the lever (34) manually close the plug with
sufficient force to allow seat ring and plug to
align.
When a recessed groove exits in the spacer
tube (20), this spacer tube (20) must be placed
on the shaft (19) so that the shaft shoulder or
retaining ring fits into the recessed groove on
one end of the spacer tube (20).
Caution: the pin is safety part which cannot
be replaced by a plug, use only Masoneilan
supplied safety pins.
Pin must engage hole in packing box ring
(23). Test by manually pulling on the shaft to
verify engagement.
Torque m.N
Torque lb.ft
DN 25 (1")
DN 40 (1" ½)
DN 50 (2")
30
22
DN 80 (3")
75
55
DN 100 (4")
75
55
DN 150 (6")
145
107
Figure 11
Caution: Do not tighten the seat ring retainer
to torque specification at this time.
