Flowserve EV 30 - Manual (Page 21)

21
Attention
Note that the bayonet base cap is spring loaded.
– Spring force when spring is mounted:
140 N
– Length of unloaded spring : 157 mm
Vent Valve: Exchanging Gasket
– continued –
6. Unscrew nut , using a hexagon socket spanner for holding the cheese head
bolt .
7. Remove retaining plate and gasket from valve disc .
8. Insert new gasket in valve disc . Attach retaining plate and spring disk
to valve disc using cheese head bolts and nuts. Torque required for
tightening: 30 Nm.
9. Put spring onto spring disk and press bayonet base cap against the spring
until the pins engage in the corresponding J-shaped slots of the bayonet socket
pipe . Then rotate the bayonet base cap clockwise until its pins are seated
firmly in the slots.
10. Attach operating rod and driving pin to the vent valve.
11. Put a new gasket on the vent valve and fix it to the gas balance pipe with four
socket-head cap screws, torque required for tightening: 50 Nm.
12. Mount gas balance pipe with vent valve to the valve mounting flange or pipe
socket of the tank.
13. Attach connecting rod to bottom valve.
G
3
G
5
G
6
G
7
G
8
G
9
G
10
G
10
G
8
G
7
G
3
G
5
G
4
G
2
Required spare parts:
Designation Material Ref. no.
Gasket FPM 008372
Gasket PTFE 008860
Gasket Centellen 048597
Please state the reference number when ordering these parts at GESTRA.