Maintenance – Flowserve EV 30 User Manual

Page 19

See Fig. 2, 4, 6

1. Loosen connecting rod (linked with and ) from bottom valve.

2. Unscrew fixing bolts of bayonet base cap . Pull bayonet base cap out of the

bayonet socket pipe .

3. Use manual operating mechanism to open the bottom valve.

4. Fix valve disc by inserting a pin

∅

5 mm into the hole .

5. Use manual operating mechanism to close the bottom valve. The valve disc is

kept in the open position by virtue of the fixing pin.

6. Remove valve disc with guide and spring from bayonet socket pipe.

7. Check adjustment setting 23

0.5 mm at tappet of the operating mechanism

(see Fig. 2) and, if necessary, adjust the tappet as described in the section
“Installation”.

8. Undo the three hexagon-head screws fastening the mounting base to the

valve disc . Remove the mounting base and gasket .

9. Put new gasket into the valve disc, place mounting base onto the valve disc

and fasten the three hexagon-head screws; torque required for tightening:
18 Nm.

10. Put valve disc with guide and spring into the bayonet socket pipe and guide

into the bayonet base cap.

11. Push hand lever in the opening position.

For installation and maintenance work use tools commonly used by fitters and
mechanics.

Maintenance

Tools

Bottom Valve: Replacing Gasket

Attention

Before carrying out any maintenance work inside the tank make sure that
the latter is accessible and sufficiently aearated.

After servicing check the adjustments as specified in the section
“Installation”.

Attention

Make sure that the tappet extends into the recess in the valve disc.

We recommend to replace the gaskets of the bottom valve and the vent valve after
every tank inspection.