10
APV_SI2_UK-6_012019.indd
UK
Safety Valve
DELTA SI2
Instruction manual UK-rev. 6
APV
11. Service Instructions
11.3. Assembly of seat lift actuator
1.
Insert the slightly greased seal rings (15, 29).
2.
Push the piston (13) into the cylinder (12).
3.
Insert the pressure spring (28) and fix the cover (16) with the
retaining ring (17).
4.
Push the complete seat lift cylinder on the valve and tighten the ring
(19) until it stops.
5.
Fix the cover (20) with the screws (25).
11.4. Installation of seals and assembly of valve
1.
Place the guide strap (26) and the o-ring of the sliding ring (35) in
the housing cover (8).
2.
Press the sliding ring (34) into reniform shape and put it into the
groove of the housing cover onto the o-ring (fig. 1).
3.
Slide the housing cover (8) onto the pressure rod (11).
4.
Before mounting the complete valve seat, insert the seat seal (3)
(fig. 2).
5.
Place the seat seal (3) in the cap (4) and press it into the seat (2).
6.
Insert the seal ring (5, 35) into the guide (6).
7.
Screw guide (6) and seat (2) firmly together.
8.
Put the complete valve seat onto the pressure rod (11) and fix it with
the hexagon screws (37) and washers (36).
9.
Install the slightly greased housing seal (7) in the housing cover (8).
Delta SI2-
A
with seat lift cylinder
feedback
support
13
3
5
8 9
7
35
34
26
2
4
6
37,36
25
15
12
16 17
28
29
19
20
fig. 2
2
4
fig. 1
26
8
34
