SPX Flow APV DELTA RG4 Bedienungsanleitung Seite 25

APV
APV_RG4_ATEX_UK-0_032018.indd
25
Modulating Valve
DELTA RG4-ATEX
Instruction Manual: UK-0
11. Service Instructions
11.4. Assembly of the valve and installation of new parts
Attention!
To ensure a trouble-free assembly and a high service life of all wear
parts (seals, guides, etc.), all parts must be slightly greased.
Sharp-edged tools (screwdrivers or similar tools) must not be used
for the installation to avoid damage to the parts and provide their
faultless function.
1. Place housing seal (8) onto the valve seat (27) and insert seat into
housing (1).
2. Insert flange seals (3, 3.1) into the housing flange (1) and into the
flange (5) and install the housing (1) in the line system by means of
screws and nuts (4, 6, 7).
Attention!
22
3. Insert seat seal (26) into valve shaft (25)
(see item 12.).
21
Attention!
12
4. Insert shaft seal (10), seat seal (11) into the housing cover (9).
Insert bushing (12) into the yoke (13). Place housing seal (8) on the
10
housing cover (9).
5. Tighten cover (9) with the valve yoke (13) by hand.
6. Insert valve shaft into the valve yoke. Screw the counternut (21)
and the coupling (22) on the thread of the valve shaft (25) only now,
as otherwise, the shaft seal (10, 11) would be destroyed by the
hexagon of the coupling and the counternut.
Observe adjusting dimension!
11
Connect the valve shaft and actuator rod of the diaphragm actuator
by means of the coupling.
7. Push valve insert into the housing and fasten it at the housing
flange by means of the hexagon nuts (15).
8. Firmly tighten coupling and hexagon nuts (14).
9. Connect electric and pneumatic supply lines and re-initiate the
positioner.
Provide for proper alignment of housing and line
flanges!
To prevent air from being trapped in the groove,
use suitable tool to vent the groove.
UK
20