3
A
A
A
A
A
A
A
A
3
1
1/2
5/8
1.8
1.5
4
1
1/2
5/8
1.8
1.5
6
2
1/2
1
4.9
4.1
8
2
1/2
1
4.9
4.1
10
4
1
3/4
12.6
10.2
12
4
1
3/4
12.6
10.2
14
4
1
3/4
12.6
10.2
16
5
2
19.6
16.5
18
5
2
19.6
16.5
20
6
2
1/2
28.3
23.4
24
7
3
38.5
31.4
26
8
3
1/2
50.3
40.6
28
8
3
1/2
50.3
40.6
30
10
4
1/2
78.5
62.6
32
10
4
1/2
78.5
62.6
36
12
5
1/2
113.1
89.3
CLARKSON
KNIFE GATE VALVE MODEL ZP3OO
INSTALLATION AND MAINTENANCE INSTRUCTIONS
BASIS OF BOLT LENGTH AND STUD LENGTH CALCULATION
ACTUATION
ZP300 has two options for actuation: Hydraulic
Cylinder (HC) and Bevel Gearbox (BG) with
manual hand wheel. The HC option is designed
to operate with a hydraulic fluid pressure of
< 2000 psi and the BG with a rim-pull of < 80 lb.
FIGURE 3
Hydraulic cylinder design and mounting arrangement
HYDRAULIC CYLINDER SIZE AND REQUIRED FLOW RATE
Valve size
NPS
HC size
Rod size
Fluid flow rate (in
3
/sec)
1 in/s Max (close)
1 in/s Max (open)
WARNING
To minimize stress concentration in flow ring
ensure flange gasket ID is matched with flow ring
ID as shown in Figure 2.
GASKET DETAIL
FIGURE 2
Gasket
Gasket ID
matched to
flow ring ID
Flow ring
with overlay
HYDRAULIC CYLINDER ACTUATION
Valve body recess
(flowring raised face)
1x Bolt dia.
Gasket thickness
Gasket thickness
.06 Nominal
flange raised face
.060 Flange raised face
Flange thickness
Flange thickness
Washer thickness
(F436)
Washer thickness (F436)
Nut height (heavy hex)
Extra length
Is the raised face on the body
Is the raised face on the body
Bolt length
Stud oval
1x Bolt dia. deep
Valve body recess
Bolt length = Washer thi Flange thi Flange raised face + Gasket thi Valve body 1 x Bolt dia
