Danfoss VZ 2, VZ 3, VZ 4 Data sheet
Data sheet
VZ valve - 2/3/4-way
Description
VZ 2 VZ 3 VZ 4
VZ valves provide a high quality, cost effective
solution for the control of hot and/or chilled
water for fan coil units, small reheaters, and
recoolers in temperature control systems.
The valves are used in combination with
AMV(E) 130/140, AMV(E) 130H/140H and
AMV(E) 13 SU actuators.
Ordering VZ 2 Valve
Picture
()* recommended ∆p
Main data:
• DN 15, 20
• kVS 0.25 - 4.0 m3/h
• PN 16
• Logarithmic flow characteristic
• Temperature:
- Circ. water / glycolic water up to 50%:
2 … 120 °C
• Reduced kVS on B port (VZ3 & VZ4 only)
• Linear bypass on 3 and 4 port valves
• Valves are supplied with screwed plastic
cover for manual operation
• Connections: flat end or conex
DN k
(mm) (m3/h) (bar) Flat End
15
20
VS
0.25
0.4 06 5Z 5311
0.63 06 5Z5312
1.0 0 65Z5 313
1.6 0 65Z5 314
2.5 065Z5315
2.5
4.0 065Z5321
Max. ∆p
3.5 (1)*
2.5 (1)*
Code No.
065 Z5310
065Z5320
VZ 3 Valve
Picture
()* recommended ∆p
DN
(mm)
15
20
kVS (A-AB) kVS (B-AB)
m3/h
0.25 0.25
0.4 0.25 06 5Z 5411
0.63 0.4 06 5Z5412
1.0 0.63 06 5Z5413
1.6 1.0 0 65Z5 414
2.5 1.6 0 65Z5415
2.5 1.6
4.0 2.5 065Z5421
Max. ∆p
(bar)
3.5 (1)*
2.5 (1)*
Code No.
Flat End
065Z5410
065Z5420
© Danfoss | 2018.08 VD.HB.I7.02 | 1
Data sheet VZ valve - 2/3/4-way
2
vs
valve
k
Q
S∆p
=
Ordering (continuous)
VZ 4 Valve
kVS (A-AB) k
Picture
()* recommended ∆p
DN
(mm)
15
20
0.25 0.25
0.4 0.25 065Z5511
0.63 0.4 065Z5512
1.0 0.63 065Z5513
1.6 1.0 065Z 5514
2.5 1.6 065Z 5515
2.5 1.6
4.0 2.5 065Z5521
NOTE:
kVS - is the flow in m3/h of water at a temp erature between 5 °C
and 40 °C whic h passes through a valve open at th e nominal
stroke with 100 kPa (1 bar) pressure d rop.
Max. Δp is the p hysical limit of differe ntial pressure the valve will
close against . The recommended Δp - values i n parentheses ()
is based on the ge neration of noise, plug ero sion etc. It should
be checked ag ainst the Δp figure calcul ated from the chart on
page 4 or the eq uation below, with the valve full y opened at the
designed f low rate.
m3/h
(B - AB)
VS
Max. ∆p
(bar)
3.5 (1)*
2.5 (1)*
S = specific g ravity
Q = flow rate in m3/h
Δp
valve
(fully open).
Conversion factors
1 bar = 100 kPa = 14.5 psi
1 l/s = 1 kg/s = 3.6 m3/h
Code No.
Flat End
065Z5510
065Z5520
= pressure drop across val ve in bar
Accessories
Connection Pipe size DN Description Code No.
Tailpieces with
external thread
R /” 15
R ½” 20 003H6902
Consist of 2 union nuts,
2 tailpieces and 2 gaskets (Ms 58)
065Z7015
Technical data
Connection Pipe size DN Description Code No.
Tailpieces for
soldering
Control characteristic Logarithmic
Control range min. 50:1
Leakage loss, closed valve
Medium Circulation water / Glycolic water up to 50 %
Medium temperature °C 2 … 120
Max. operating pressure bar 1
Stroke mm 5.5
Connection External thread (flat connection (MS 58) or conex))
Materials
Body, seat and cone Dezincing free brass CuZn36Pb2As
Stem Stainless steel
Stuffing box EPDM
12 m m 15
15 mm 20 06 5Z7017
Consist of 2 union nuts, 2 solder bushes
and 2 gaskets (Ms 58)
A - AB ≤ 0.05 % of kVS
B - AB ≤ 1 % of kVS
065 Z7016
2 | VD.HB.I7.02 © Danfoss | 2018.08
Data sheet VZ valve - 2/3/4-way
Pressure temperature
diagram
PN 16
Disposal
The valve must be dismantled and the elements
sorted into various material groups before
disposal.
Manual operation Valves are supplied with screwed plastic cover
for manual operation.
Note: The flow is reduced on 75 % in case of
using plastic cover.
Closing
A-AB
Opening
A-AB
VD.HB.I7.02 | 3© Danfoss | 2018.08
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