2.
WARNING
Risk of injury due to slipping or falling objects.
The valve can weigh up to 11.5 kg, depending on the product version. Body parts
can be crushed. In overhead installations, the result can be serious head injuries.
• Secure the valve from falling or slipping with appropriate means of securing.
1. Depressurise the piping and the connecting cable of the operating medium.
Allow the valve and piping to cool.
Drain the piping and valve completely.
–
Make sure no one is located in front of the outlet opening.
–
Catch discharging media in a suitable container.
3. Disconnect the connecting cable of the operating medium from the valve.
4. Disconnect the piping connections and remove the valve.
13
Technical data
13.1
Technical data, general
VZXA-...-C.../W...-...-M-...-V4
Design
Poppet valve with diaphragm actuator
Actuation type
pneumatic
Sealing principle
soft
Mounting position
any
Type of mounting
In-line installation
Valve function
2/2
Direction of flow
not reversible
Product weight
Medium
1)
Medium VZXA-A-...-M
Compressed air grade of filtration 200
ì
m, inert
gases, vapour
Medium VZXA-B-...-M
Compressed air grade of filtration 200
ì
m, inert
gases, water, neutral liquid media, petroleum,
petroleum-based hydraulic fluid, vapour
Pressure of medium
2)
[MPa]
0 … 2.5
[bar]
0 … 25
[psi]
0 … 362.5
Viscosity
[mm
2
/s]
£
600
Operating medium
Operating medium
Compressed air in accordance with ISO
8573-1:2010 [7:4:4]
Max. operating pressure
[MPa]
0.7
13.2 Technical data, pneumatic
[bar]
13.2 Technical data, pneumatic
[psi]
13.2 Technical data, pneumatic
Ambient conditions
Temperature of medium (modified
PTFE seat seal material)
[°C]
–30 … +200
Temperature of medium (PTFE seat
seal material)
[°C]
–10 … +180
Permissible min./max. temperature
(TS) (modified PTFE seat seal mate-
rial)
[°C]
–30 … +200
Permissible min./max. temperature
(TS) (PTFE seat seal material)
[°C]
–10 … +180
Ambient temperature
[°C]
0 … +60
Drive degree of protection
IP65, IP67
Outdoor use
Weatherproof locations class C1 in accordance
with EN 60654-1
Connection
VZXA-...-CS5-...-M
Clamp connection in accordance with DIN
32676, Series A
VZXA-...-CS15-...-M
Clamp connection in accordance with DIN
32676, Series B
VZXA-...-CS1-...-M
Clamp connection in accordance with ASME BPE
VZXA-...-WS2-...-M
Welded end in accordance with DIN 11850 R2
VZXA-...-WS3-...-M
Welded end in accordance with DIN EN ISO
1127/ISO 4200
VZXA-...-WS1-...-M
Welded end in accordance with ASME BPE
Operating medium port
G 1/8
Note on materials
Valve housing VZXA-...-V13
Stainless steel casting (1.4409)
Valve housing VZXA-...-V14
Stainless steel casting (ASTM A351-CF3M)
Seat seal VZXA-...-TP-...-M
PTFE modified
Seat seal VZXA-...-T-...-M
PTFE
Drive housing
Stainless steel casting (1.4408)
Diaphragm actuator seals
NBR
Actuator stem
High-alloy stainless steel
Drive cover
Stainless steel casting (1.4408)
1) Other media on request
2) As specified on product labelling
Tab. 4: Technical data, general
13.2
Technical data, pneumatic
Nominal pressure, burst pressure and flow rate of valve body VZXA-...-TS
Port size
["]
1
1¼
1½
2
2½
Nominal width DN
25
32
40
50
60
Nominal pressure PN of process
valve
(up to 200 °C temperature of
medium)
[MPa]
2.5
1.6
1
[bar]
25
16
10
[psi]
362.5
232
145
Burst pressure
(up to 200 °C temperature of
medium)
[MPa]
12.5
8
5
[bar]
125
80
50
[psi]
1812.5
1160.3
725.2
Flow rate K
v
1)
VZXA-A-CS5/WS2-…-…-90-…-V4
[m
3
/h]
21.7
31.6
37
56.2
76.4
VZXA-A-CS15/WS3…-…-90-…-V4
[m
3
/h]
19.7
28.1
44.4
62.6
74.3
VZXA-A-CS1/WS1…-…-90-…-V4
[m
3
/h]
16.2
—
37.6
57.9
70.3
VZXA-B-CS5/WS2…-…-90-…-V4
[m
3
/h]
22.9
32.2
33.6
50.6
74.5
VZXA-B-CS15/WS3…-…-90-…-V4
[m
3
/h]
20.3
28.5
43.3
58.2
71.6
VZXA-B-CS1/WS1…-…-90-…-V4
[m
3
/h]
15.6
—
35.4
52
66.5
1) Water, at +20 °C, pressure of medium 1 bar at the valve inlet, free outlet
Tab. 5: Technical data, pneumatic, VZXA-...-TS
Pressure of medium and operating pressure VZXA-B-...-M-90-...-S (medium flow
under valve seat, N/O)
Nominal width DN
25
32
40
50
65
Max. pressure of
medium
[MPa]
1.6
1.22
0.58
[bar]
16
12.2
5.8
[psi]
232
176.9
84.1
Min. operating pressure [MPa]
0.28
0.33
0.42
0.5
[bar]
2.8
3.3
4.2
5
[psi]
40.6
47.9
60.9
72.5
Tab. 6: Limit values of pressure of medium and operating pressure VZXA-B-...-
M-90-...-S
Fig. 3: Pressure of medium and operating pressure VZKA-B-...-M-90-...-S
p1 Pressure of medium
p2 Operating pressure
Pressure of medium and operating pressure VZXA-B-...-M-90 (medium flow
under valve seat, N/C)
Nominal width DN
25
32
40
50
65
Max. pressure of
medium
[MPa]
2.5
2.5
1.6
1
0.56
[bar]
25
25
16
10
5.6
[psi]
362.5
362.5
232
145
81.2
Min. operating pressure [MPa]
0.5
[bar]
5
[psi]
72.5
Tab. 7: Limit values of pressure of medium and operating pressure VZXA-B-...-
M-90
Pressure of medium and operating pressure VZXA-B-...-M-90-...-PR (medium
flow under valve seat, N/C with reduced spring force)
Nominal width DN
25
32
40
Max. pressure of
medium
[MPa]
1.45
0.75
0.6
[bar]
14.5
7.5
6
[psi]
210.3
108.8
87
Min. operating pressure [MPa]
0.21
[bar]
2.1
[psi]
30.5
Tab. 8: Limit values of pressure of medium and operating pressure VZXA-A-...-
M-90-...-PR
