
DeZURIK
3---36" PEF 100% Port Eccentric Plug Valves
April 2015
Page 17
D10453
Reassembly
See Figure 3 for parts identification.
1. Push a new bearing (A2) into the body (A1), then lubricate the bearing as described in the
"Lubrication"
section.
2. For
24” - 36” valves
, place a new o-ring (A16) in the groove of the journal cover (A17). Fasten
the journal cover to the body (A1) with screws (A18).
3. Place a Teflon thrust washer (A4) on the top and bottom shoulder of the plug shaft (A3).
4. Place the plug (A3) into the body (A1) so the lower journal slides into the bearing (A2). Turn the
plug so it is almost closed.
5. If necessary, push a new bearing (A7) into the bonnet (A6), then lubricate the bearing. See
"Lubrication"
section.
6. For
3” – 20” valves
, place an o-ring (A5) in the bonnet (A6).
For
24” - 36” valves
, place an o-ring (A5) into the o-ring groove of the body (A1).
7. Place bonnet (A6) on body (A1), align witness marks, then fasten bonnet in place with screws
(A8).
This valve is a pressure vessel and has been supplied with a WARNING TAG from
the factory.
Secure WARNING TAG (A14) to bonnet (A6) with one of the bonnet screws (A8) at
the location noted during disassembly.
8. Turn the plug (A3) to the closed position. See
"Actuator Stop Adjustments"
section.
9. For valves with low friction packing, lubricate the new packing (A9), then install it one ring at a
time. See Figure 4.
Note:
3 - 8” valves use a friction cone (A21) with a wrenching nut or hand lever actuator, and standard
packing. Before installing the gland (A11), set the friction cone on top of the packing (A9). Do not
lubricate the outside of the friction cone or the inside of the gland. (See Figure 5.)
10. Slide the gland (A11) down the plug shaft (A3) and over the studs (A12). If the valve has a
friction cone (A21), bring the gland nuts (A13) under the gland up finger tight.
11. Adjust gland nuts (A13).
3 – 8" L
EVER AND
N
UT
O
PERATED
V
ALVES
O
NLY
:
Turn packing gland nuts (A13) onto the studs (A12) until they contact the gland (A11). It will be
necessary to adjust the gland nuts after the valve is pressurized; see the
"Packing Adjustment"
section.
Note:
This is a preliminary adjustment, it will be necessary to adjust the gland nuts (A13) after the valve is
pressurized. See
"Packing Adjustment"
section.