Flowserve EV 30 User Manual

Page 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.

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.