Pricelist CE Oct 2024 - Flipbook - Page 205
TORQUE VALUES
FOR RESILIENT SEATED GATE VALVES, PN16
MOT:
Maximum operational torque required to open/
close the valve against full unbalanced pressure.
MST:
Minimum strength torque, the valve still being
functional and complying with the standard.
AVK – Open/Close:
Maximum torque required to close the valve
against full unbalanced pressure.
AVK – Free running torque:
Torque required for the spindle to rotate freely
(no flow).
AVK – Rupture torque:
Min. strength torque, not making permanent
damage to the valve.
AVK – Turns:
Number of turns required to completely open or
close the valve.
Content / Definitions
AVK offers resilient seated gate valves (RSGV)
and metal seated gate valves (MSGV) to different
standard worldwide. Due to the different design
demands, depending on the relevant standard,
the characteristics of the valves are different with
respect to strength, closing torque, number of
turns etc.
Operation
To avoid increased closing/operation torque or
seizure of the internal parts of the valve, it is
recommended to operate the valves in a regular
basis to ensure long life and durability.
AVK recommend:
• Valves for water and gas every year
• Valves for wastewater and industry every third
month.
Table 1: Gate valves (RSGV) according to
European standard, drinking water applications,
hand wheel operation.
Table 2.1 og 2.2: Service connection valves
(RSGV) European design.
Table 3.1 og 3.2: Gate valves (RSGV) according
to European standard, designed for gas
applications.
After operation, the valve must be left in fully
open position with stem released from stress or
in closed position with closing torque as stated
in the table on the following pages. Do not over
torque the valve as this may permanently damage
the valve.
TORQUE VALUES, RESILIENT SEATED GATE VALVES, PN16
Water valves
European standards
Table 1: Water – EN 1074-2 Annex A, EN 1171-Cat. 2, DIN 3352-4, BS 5163-Type A
Standards
AVK
AVK- New generation of gate valves
DN
MOT
MST
Open/Close
Rupture
Free
mm
Nm
Nm
Nm
Nm
Nm
40
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
800
900
1000
1200
40
50
65
80
100
125
150
200
250
300
350
400
450
500
NA
NA
NA
NA
NA
NA
90
100
130
160
200
250
300
400
500
600
700
800
900
1000
1200
1400
1600
1800
2000
40
40
60
60
80
80
80
120/1005)
180)7
200)7
300¹), 6)
300¹), 6)
300¹)/450²)/500³)
300¹)/450²)/500³)
500²)/700³)
850
850
800/800/1100*)
800/800/1100*)
1200/1500/1800 *)
400
400
400
400
400
500
600
800
1000
1200
1400
1600
1600
1600
1600
3000
3000
4000
4000
4000
6
6
6
6
6
6
12
12
12
16
24
24
25
25
25
60
60
300
300
300
Turns
11
11
14
17
21
26
26
33/355)
37
44
59
59/504)
59¹)/43²)/39³)
59¹)/43²)/43³)
53¹)/52²)/53³)
60
70
85
85
102
Open/close
Rupture
Free
Nm
Nm
Nm
25
25
25
35
35
40
40
80
90
90
250
250
450
450
500
250
250
250
400
400
500
600
800
1000
1200
1400
1600
1600
1600
1600
3
3
3
3
3
3
3
3
6
6
24
24
25
25
25
Turns
12
12
17
17
21
26
26
33
43
51
59
59
43
43
52
1) Series 02 & 20, 2) Series 06 & 26, 3) Series 55, 4) Series 36, 5) Series 15, 6) Series 15/7X, 7) Series 18/00 DN 250/300: 150Nm, *) 6 bar/10bar/16bar
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