Leser 526 API - Section 9.7: Determination and Installation of the Lift Stopper; 9.7.1 Lift Stopper with Ring;Sleeve

LESER Global Standard
Assembly instructions for type 526 API
LGS 4104
Page 25/45
disclosure cat.:
II
proofread:
SSt
published date:
06/14/18
effect. date:
05/18
author:
Nieh
released by:
KUW
replaces:
initial
status:
Published
resp. depart.:
IE
date of release:
06/14/18
revision No.:
2
doc. type:
LGS
change rep. No.:
NA
retention period:
10
protected
9.7 Determination and installation of the lift stopper
9.7.1 Lift stopper with ring/sleeve
9.7.1.1 Procedure for small valves without bellows (up to approx. DN 65 / 2 1/2").
Illustration
Description
Aids / Tools
Figure 9.7.1.1-1
Take the extent to which the stroke has to
be limited from the work order. Insert the
spindle/disc assembly without the spring
and spring plate. Put on the bonnet and
tighten the nuts.
Make the adjusting screw and spindle
flush.
Figure 9.7.1.1-2
Clamp the body on the outlet in the vice.
Lift the disc with a screwdriver through
the inlet as far as it will go.
Screwdriver
Clamping block
Figure 9.7.1.1-3
Measure the spindle overlap in an opened
state. Deduct the requested stroke from
this measurement and have a lift stopper
made.
Sliding Vernier
calliper