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8640 Datasheet(PDF) 13 Page - Christian Bürkert GmbH & Co. KG

Part # 8640
Description  Pneumatically operated 2/2-way angle seat valve with stainless steel actuator
PDF  25 Pages
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Manufacturer  BURKERT [Christian Bürkert GmbH & Co. KG]
Direct Link  https://www.burkert.com/en
Logo BURKERT - Christian Bürkert GmbH & Co. KG

8640 Datasheet(HTML) 13 Page - Christian Bürkert GmbH & Co. KG

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6.
Performance specifications
6.1. Fluidic data
Overview of fluidic data for flow below seat (for liquids, steam and gases)
Note:
• K
V value [m
3
/h]: Measured with water at + 20 ºC, 1 bar(g) pressure at valve inlet and free outlet
• Pressure data [bar(g)]: Overpressure to atmospheric pressure
Nominal diameter
(port connection)
Actuator
size Ø
K
V value
water
Pilot pressure min. Operating pressure max.
CF A
CF A
CF A
CF B
Seat seal
PTFE
PEEK
PTFE
DN
NPS
[mm]
[m3/h]
[bar(g)]
[bar(g)]
[bar(g)]
[bar(g)]
10
⅜
32 (B)
2.4
5.5
16
–
16
15
½
32 (B)
4
5.5
11
–
–
50 (D)
4.2
4.1
16
–
16
70 (M)
5
4.8
25
25
25
20
¾
50 (D)
8
4.1
11
8.5
16
70 (M)
11
4.8
25
25
25
25
1
50 (D)
14
4.1
5.2
–
16
70 (M)
18
4.8
16
13.5
25
90 (N)
18
5
25
25
25
32
1¼
70 (M)
27
4.8
8.5
–
25
90 (N)
28
5
25
19.5
25
130 (P)
28
5
–
25
–
40
1½
70 (M)
38
4.8
6
–
25
90 (N)
40
5
16
13.5
25
130 (P)
42
5
25
25
25
50
2
90 (N)
55
5
10
–
25
130 (P)
62
5
25 (20 1.)) 23 (20 1.)) 25 (20 1.))
65
2½
90 (N)
85
5
5
11
130 (P)
95
5.6
16
12.5
17 (15 1.))
80
3
130 (P)
140
5.6
10
8
11
1.) According to pressure equipment directive 2014/68/EU for compressible fluids of group 1 (dangerous gases and vapours according to article 4, paragraph (1), c), i), first indent)



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