1" n, Nm3/h, 968 s – Steriflow Mark 968 Series User Manual
Page 5
Set Pressure
Inlet (bar)
Orifice Size
1/8"
3/16"
1/4"
5/16"
3/8"
7/16"
1/2"
9/16"
2" H20
(1-2.5" H20)
1" H20 Droop
2" H20 Boost*
0.345
6.40
11.9
13.7
17.8
15.2
28.2
33.2
37.2
0.689
9.28
17.5
19.9
25.3
22.0
34.1
41.0
1.38
14.0
24.7
29.9
38.9
22.7
2.76
22.2
34.6
47.6
56.9
4.14
30.4
41.0
53.0
5.52
38.5
41.2
53.7
6.89
46.6
49.9
10.3
60.7
63.8
3" H20
(2-5" H20)
1" H20 Droop
2" H20 Boost*
0.345
7.58
11.9
16.0
17.8
19.5
28.2
37.0
38.0
0.689
10.1
17.5
24.6
25.2
25.8
34.1
42.5
1.38
13.3
24.7
35.8
38.9
18.6
2.76
20.7
34.6
48.3
56.9
4.14
27.3
41.0
54.5
5.52
35.5
41.2
46.0
6.89
43.4
49.9
10.3
56.1
63.8
7" H20
(4-10" H20)
1" H20 Droop
2" H20 Boost*
0.345
8.01
10.7
13.5
14.8
16.0
22.4
29.0
24.0
0.689
10.8
16.6
22.4
20.4
18.5
28.4
38.1
1.38
13.8
24.7
35.3
47.7
59.47
61.6
2.41
19.1
40.9
61.9
66.7
71.5
89.3
5.17
34.6
64.5
93.9
6.21
39.6
74.2
6.89
43.4
80.3
10.3
56.1
104
28" H20
(5-30" H20)
5-1/2" H20 Droop
0.345
9.00
13.5
18.0
21.5
25.0
28.1
31.0
32.0
0.689
11.0
17.6
23.5
31.9
40.3
44.8
49.3
2.07
10.6
30.4
49.7
62.0
73.8
80.2
3.10
20.3
45.2
67.7
81.8
4.14
26.3
60.0
93.5
93.2
5.17
32.2
71.2
6.89
41.0
91.1
10.3
53.0
118
0,09 bar
(0.03 - 0,12 bar)
0,01 bar Droop
0.345
5.6
8.46
13.6
12.3
16.4
14.5
20.5
20.5
0.689
7.56
10.7
16.8
17.2
25.2
21.4
29.4
29.4
2.07
9.28
15.6
27.4
26.2
33.8
38.0
3.10
13.6
21.5
33.9
32.7
39.5
4.14
17.7
28.2
42.4
39.6
45.9
5.17
19.5
34.8
52.6
6.89
26.0
45.5
67.2
10.3
34.3
59.2
87.2
0,21 bar
(0,07 - 0,24 bar)
0,02 bar Droop
0.345
4.5
6.74
9.0
9.8
10.5
11.6
12.5
21.0
0.689
6.7
10.0
13.4
16.2
19.0
20.1
21.3
23.5
2.07
7.53
15.6
23.4
26.1
28.6
37.8
3.10
7.90
21.5
31.1
32.7
32.7
4.14
17.5
28.2
38.9
39.6
39.9
5.17
19.5
34.8
48.3
6.89
24.1
45.5
67.6
10.3
31.1
59.2
87.2
M
ark
968 S
anitary
G
aS
r
eGulator
1" n
2
M
ax
F
low
c
apacity
: nM3/H
Flow in this area is outside the operating
parameters of the valve
Flow in this area is outside the operating
parameters of the valve
Flow in this area is outside the operating
parameters of the valve
Flow in this area is outside the operating
parameters of the valve
Flow in this area is outside the operating
parameters of the valve
Flow in this area is outside the operating
parameters of the valve
* Boost refers to a small rise in outlet pressure set point that can occur, and is characteristic of, this type of regulator when flow nears the valve's maximum capacity. To understand this
phenomenon and to determine your maximum flow requirements, see API 2000
To select the orifice size for your valve you need to know P1 (inlet pressure). P2 (outlet pressure set point), and maximum flow in NM3/H.
1. Select the row that best represents your outlet Set Pressure (P2)
2. Select the sub-row that is representative of your Inlet Pressure (P1)
3. Find the Flow rate in that sub-row that encompasses your maximum flow. Look at the orifice column heading to determine your specific orifice size.
-5-