Filter
Top Products
DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012
TM
DISASSEMBLY AND REASSEMBLY 5-3
6. Lift off the cylinder head by taking out the socket screws.
7. Remove and inspect all O-rings for nicks, cuts and wear.
Figure 5-1. Using the Piston to Insert the Seat Ring into the 150/300 lb. Cylinder
Table 5-l. Typical Opening/Closing Speed
Line
Size
Inches
Typical
Dead
Time
Setting
(Seconds)
Recommended Low Flow Set-point Typical
Opening
Speed
Adjust-
ment
(Turns
Open)
Typical
Opening
Time
(Shut-off
to Full
Open)
Seconds
Typical
Closing
Speed
Adjust-
ment
(Turns
Open)
Typical
Closing
Time
(Full
Open to
Shut-off)
Seconds
Turbine PD Meter
gpm K-factor gpm K-factor
2-3
4
6
8
0.015
0.015
0.030
0.030
100
150
150
150
50
25
25
25
100
150
150
150
100
25
25
25
0.25
0.25
0.75
0.75
5.0
5.0
5.0
5.0
0.75
0.75
1.25
1.25
2.0
2.0
2.0
2.0