Flowserve EV 30 User Manual

Page 17

see Fig. 4

1. Weld support from inside into the tank top, taking spacing specifications

(59

2) into account. The support is not part of the GESTRA consignment. We

recommend using a pipe (168.3 x 4.5 mm) as support.

Vent valve and standpipe (internal gas balance pipe)

Attention

The grooves (145 x 18 mm – cf. Fig. 4) of the support have to be crosswise
to the longitudinal axis of the tank.

Attention

Guide has to be in alignment with the centre line of the bottom valve.

2. Weld valve mounting flange or socket for standpipe according to Fig. 4 a and

4 b into the tank bottom.

3. Weld pipe end with flange for mounting the vent valve to the internal standpipe.

4. Mount vent valve with operating rod onto the flange before fitting the

standpipe in the tank. To do that, put the gasket onto the seating surface of the
flange and then tighten the four cheese-head screws to fix the vent valve firmly in
place. Tightening torque 50 Nm

5. Attach the standpipe with the vent valve to support . Put a gasket onto the valve

mounting flange or tank socket and secure the standpipe with the vent valve by
using bolts.

6. Screw operating rod to vent valve using washers and nuts (see Fig. 4).

Screw lock nut onto operating rod up to the end of thread.
Screw connecting sleeve onto operating rod , taking specified setting
(30

1 mm) into account.

7. Put bayonet base cap onto bayonet socket pipe and insert square connecting

piece into bayonet base cap .

8. The length of the connecting rod (not part of the GESTRA consignment) is found

by adding the linear size Z (distance between connecting sleeve and square
connecting piece ) to the depth of insertion (2 x 15 mm). From this it follows that
the length of the connecting rod = linear size Z + 30 mm.
(Rule of thumb for determining the size of the connecting rod: Inside diameter of
tank minus 650 mm; the exact sizing should be effected when fitting the
connecting rod.)

9. Remove connecting sleeve and square piece .

Cut the connecting rod (

∅

22 mm, made of carbon steel or, in case of austenitic

design, of DIN material 1.4305 or equivalent) to the respective length and weld it
to the connecting sleeve and square piece .
Connecting sleeve and square piece (at weld area) are made of:
Standard design:

Forged steel C 22.8 (DIN no. 1.0460)

Austenitic design:

S. S. type X6CrNiTi 18 10 (DIN no. 1.4541)