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2
A
pplication Overview
Valve bodies are made of nodular cast iron and
are available from sizes DN 15 to DN 150.
Flanged fittings comply with DIN and BS
standards. The valve trim is made of stainless
steel. The valve packing consists of spring
loaded Teflon-Viton-Teflon V-rings.
Slotted
stem
The VG8000V valves are available in two-way
configuration
for
operation and in three way configurations, which
are available as mixing valves.
Two-way
valves
have
relationship between valve stroke and flow at a
constant pressure drop. Three-way valves have
a combination of equal percentage and linear
characteristic. An arrow is on one side of the
valve body indicating the direction of flow for
correct installation.
Varieties of electric and pneumatic actuators are
available and can be ordered as factory fitted
valve / actuator combination or separately for in-
situ installation.
Refer to this and following pages for ordering
data and additional details.
Note: It is recommended to use the correct
water treatment. Normal tap water can
mostly be used without further
preparation when contained in a closed
system and when it has been allowed to
stabilise chemically. If however, due to
water loss the system is constantly
being replenished, then the water must
be treated. Guidelines can be found in
VDI 2035.
Spring loaded, self-
adjusting, Teflon-
Viton-Teflon
V-ring packing
Push-Down-To-Close
equal
percentage
O
rdering codes for Valve Bodies
Two-way PDTC and three-way mixing
configurations
VG8
V1N
A2
A1
B1
C1
D1
E1
F1
G1
H1
J1
K1
L1
Valve Body Type
2
8
For example:
For a two-way valve, DN 65, k
ordering code is:
VG82G1V1N
VG8000V
Size
k
vs
DN
15
2.5
DN
15
4.0
DN
20
6.3
DN
25
10
DN
32
16
DN
40
25
DN
50
40
DN
65
63
DN
80
100
DN 100
160
DN 125
250
DN 150
350
2-way Valve PDTC
3-way Mixing valve
63, PN 16, the
vs
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