9
9.
Technical Data
Double-Seat Ball Valve with Cleaning Connection
DELTA DKR 2
Operating Manual : Rev. 7
UK
10.
Maintenance
-
Dismantling and installation of seals according to service
instructions.
Use complete seal kits according to spare parts list.
-
Assembly and adjustment of turning actuator according to service
instructions.
-
Lightly grease all seals.
APV recommendation:
assembly grease for EPDM, HNBR, NBR and FPM
(750 g/tin
-
ref.-No. 000 70-01-019/93)
(60 g/tube
-
ref.-No. 000 70-01-018/93)
or
assembly grease for VMQ
(600 g/tin
-
ref.-No. 000 70-01-017/93)
(60 g/tube
-
ref.-No. 000 70-01-016/93)
!
Do not use grease containing mineral oil with EPDM seals.
!
Do not use Silicone-based grease with VMQ seals.
DN
25
40
50
65
80
100
125
inch
1”
1,5”
2”
2,5”
3”
4”
max. tightening torque in Nm
( M )
10
15
22
25
40
65
operating leakage at about 5 bar in L
( Qs)
0,7
1,2
1,4
2,0
4,0
4,2
6,0
( opening and closing process )
operating leakage at about 5 bar in L
( Qs)
0,4
0,7
0,8
1,2
2,4
2,5
3,6
with operating leakage reducer
pneumatic air consumption at 6 bar NL
( V )
1,8
1,8
1,8
2,8
5,5
5,5
5,5
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