Maintenance
GPS 40-150
Type 111/114
Nm ft. lb.
DN 40-50 =
80
60
DN 65-80 =
120
89
DN100
=
140
103
DN125
=
170
125
DN150
=
170
125
Fig. 5a
ENGLISH
REPLACEMENT OF SEALING ELEMENTS
DISASSEMBLING OF GPS
Evacuate the pipe system in which the val-
ve is installed. Switch off the pilot current
and the hot gas supply. Remove the bolts
(30). Remove the valve top (actuator).
REPLACEMENT OF TEFLON RINGS IN
THE SEAT (15) AND (16)
Remove the nut (32), the valve cone (7)
and (8), and remove the bushing (9).
Replace the Teflon rings (15) and (16) and
assemble the parts in reverse order.
REPLACEMENT OF SEALING RINGS (17)
AND (18)
A. Remove the cap (13) and the lock ring
(34). Unscrew the spindle (11) clockwise
till it is disengaged from the thread.
B. Remove the bolts (28), the top cover
(4), the pilot block (60), the spring (10),
the cylinder pipe (5) and the pilot con-
nections (68).
No 2516+311 Sheet: 2/2 Rev. 0
Fig. 5b
Nm ft. lb.
DN 40-50 =
100
74
DN 65-80 =
130
96
DN100
=
170
125
DN125
=
170
125
DN150
=
170
125
Fig. 6
C. Loosen the lock screw (26), remove the
nut (14), the piston (3), and the valve
spindle (6). - NB: Handle the valve spindle
very carefully, as any damage (e.g. scratc-
hes and marks) to the spindle may cause
valve leakage.
D. Remove the sealing rings (17) and (18).
At renovation of the valve Danvalve
recommends replacement of all sealing
elements. The spare parts set for the GPS
valves includes all sealing elements.
E. Mount the O-ring (19) and then the
sealing ring (17) as shown in fig 6. Impor-
tant: Fold the sealing ring as shown. Be
certain that there are no sharp folds and
do not use tools to mount the sealing
ring.
F. Mount the O-ring (20) and then the sea-
ling ring (18) as shown in fig 7. In order
not to damage the ring use 2 plastic strips
to pull the ring to the right place.
G. Mount the O-rings (66) on nipples for
the pilot connection. Mount the nipples
(68) with the gaskets (67), tighten 30-35
Nm.
Type 112
236
Fig. 7
Fig. 8
Reassemble the actuator in reverse order:
C-B-A.
NB. Turn the piston (3) as shown on fig. 5a.
MANUAL OPENING
In case of power loss the GPS valve will
close (NC). The valves without forced clos-
ing device can be opened by hand, if the
cap is removed and the spindle is turned
anti-clockwise. To close the valve, turn the
spindle clockwise.The spindle must be
screwed to the lowest possible position
during normal operation (fig. 8).
DANSK
UDSKIFTNING AF TÆTNINGSELEMEN-
TER ADSKILLELSE AF GPS
Rørsystemet, hvori ventilen er monteret,
evakueres. Styrestrøm og varmgastilførsel
afbrydes. Fjern boltene (30). Ventiltoppen
fjernes.
