Vacuum load – KROHNE AQUAFLUX EN User Manual
Page 14
14
11 Limits
PLEASE NOTE!
•
The limits specified in the table for process temperature and operating pressure make allowance
for the tube liner and the flange standard. Refer also to the footnotes.
•
At ambient temperatures of +40 to +60 °C or +104 to +140 °F the product temperature
may not be higher than +60 °C or +140 °F.
Limits for pressure and temperature
Liner
Connection flange
Max. operating pressure in bar (psig)
at product temperature of ...
Meter size
Flange
Pressure rating S = Standard
standard
or flange class O = Option
≤
20 °C (
≤
68 °F)
≤
40 °C (
≤
105 °F)
≤
60 °C (
≤
140 °F)
≤
90 °C (
≤
194 °F)
PTFE
DN 10 – 20
DIN 2501
PN 40
S
40
(580)
40
(580)
40
(580)
40
(580)
3
/
8
” –
3
/
4
”
ANSI B 16.5
150 lb
S
19.0
*
(275)
*
18.9
*
(274)
*
17.9
*
(259)
*
17.1
*
(248)
*
300 lb
O
40
(580)
40
(580)
40
(580)
40
(580)
Hard
rubber
DN 25 – 50, DN 80
DIN 2501
PN 40
S
40
(580)
(580)
40
(580)
(580)
40
(580)
(580)
40
(580)
(580)
DN 65, DN 100 – 150
DIN 2501
PN 16
S
16
(230)
16
(230)
16
(230)
16
(230)
PN 40
O
40
(580)
40
(580)
40
(580)
40
(580)
DN 200 – 600
DIN 2501
PN 10
S
10
(150)
10
(150)
10
(150)
10
(150)
PN 16
O
16
(230)
16
(230)
16
(230)
16
(230)
PN 25
O
25
(360)
25
(360)
25
(360)
25
(360)
DN 700 – 1000
DIN 2501
PN 10
S
<10
**
.8
(<150)
**
<9.9
**
0
(<144)
**
<9.5
**
0
(<138)
**
on request
PN 16
O
<13.8
***
(<200)
***
<128
***
(<185)
***
<12.5
***
(<181)
***
on request
≥
DN 1200
DIN 2501
PN 6/2.5
S/O
on request
on request
on request
on request
1” – 40”
ANSI B 16.5
150 lb
S
19.0
*
<
(275)
*
18.9
*
<
(274)
*
17.9
*
(259)
*
17.1
*
(248)
*
300 lb
O
40
(580)
40
(580)
40
(580)
40
(580)
≥
14”
AWWA
B
S
0
6
0
(90)
0
6
0
(90)
0
6
0
(90)
0
6
0
(90)
D
O
10
(150)
10
(150)
10
(150)
10
(150)
*
**
with gaskets made of Neoprene or similar material
**
*
dependent on meter size
***
with gaskets made of Neoprene or similar material, dependent on meter size.
***
Note: Calculated operating pressures to DIN 2505 are much lower than the values in the table above.
Vacuum load
Liner
Meter size
Max. allowed vacuum load in mbar abs. (psia)
at product temperature of ...
DN mm
inch
≤
20
°
C (
≤
68
°
F)
≤
40
°
C (
≤
105
°
F)
≤
60
°
C (
≤
140
°
F)
≤
80
°
C (
≤
176
°
F)
PTFE
DN 10 – 20
3
/
8
” –
3
/
4
”
00
0
0.
(0)
00
0
0.
(0)
00
0
0.
(0)
00
0
0.
(0)
Hard
DN 25 – 300
0
1
–
12
250 (3.6)
250 (3.6)
400 (5.8)
400 (5.8)
rubber
DN 350 – 1000
14 – 40
500
(7.3)
500
(7.3)
600
(8.7)
600
(8.7)
≥
DN 1200
≥
48”
on request
on request
on request
on request