Flowserve T4E Durco Lined Plug Valve IOM - Manual (Page 11)

T4E - PFA lined Plug Valve
Ahaus GmbH
von-Braun-Straße 19a
D-48683 Ahaus
Postfach 1162 D-48661 Ahaus
Telefon: +49(0) 2561-686-100
Fax: +49(0) 2561-686-200
Register: 18
Page: 11
Date: 03.2004
Revision: 02.2007
Technical Manual
Assembly instructions T4E
The general installation and maintenance instructions must be observed.
1. Plug Subassembly:
1.1 Assemble PFA diaphragm (040) over the plug stem (020) with the aid of dia-
phragm guide.
1.2 Place metal diaphragm (050) (optional) and thrust gland (060) over the plug stem
and slide it down to the PFA diaphragm.
1.3 Remove the guide.
1.4 Place the grounding spring (070) over the plug stem and slide it down to the thrust
gland.
2. Top Cap Subassembly:
2.1 Adjusting the hexagon bolts (090) so the bottom of the thrust gland is flush with
the bottom face of the top cap (080).
2.2 Assembly the stop (110) using the hexagon bolts (120).
3. Apply a thin, even film of silicone to the entire outside surface of the plug.
4. Place the pre-assembled plug into the body. The plug ports shall be lined up in the open
position.
5. Slide the pre-assembled top cap over the
plug stem down until it rests on the thrust
gland.
6. Apply Loctite to the top cap fasteners. Place
the four bolts (100) and tighten them using
the criss-cross method according the recom-
mended torques.
7. Loosen the adjuster bolts
(¼-½ turn) and rotate the plug three times to
make it move upward.
8. Retighten the adjuster bolts according
to the recommended torques.
9. Open and close the valve a couple
of times to make sure the stops
lines the plug ports properly with the
runs in the body.
10. Slide the stop collar (130) over
the stem afterwards place
the stop collar retainer
(140).
11. Place the wrench (150)
and fasten it by using the
washer (180) and the bolt
(190).
12. All valves shall be seat
tested in both flow direc-
tions.