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  Balancing valve
 


Aperture:DN15 DN80
Sizes:1/2"—3"(15-80mm)
ZWB999S
 
 
Series ZWB999 Flow Measurement Valves are designed for application on low or medium flow ate HVAC units. Their compact size allow for easy installation and use in crowded piping compartments. The ZWB999's ball-type design extended throttling range, and large indicator plate. Make for highly accurate flow measurement; even in very low flow ranges. The ZWB999's positive memory feature is easy to see, access, and operate;facilitating system balancing and flow measurement these valves are also bi-directional. So there is no chance of installing the valve in the incorrect flow direction.

Series ZWB999 valves provide positive shutoff , eliminating the need for a separate service valve. The solder style ZWB999's may be installed without disassembly, saving costly installation time. These valves are also provided with blowout proof stems. use , misuse, corrosion,or wear will not allow the stem to "blowout,: releasing pressurized hot or chilled water.

Accurate flow measurement
Easy to use memory
Bi-directional flow
Positive shutoff
Safe"blowout"proof design
/mm
/g
CODE
G
DN
A
B
C
D
Approx.W
ZWB999S
1/2
3/4
1
11/4
11/2
2
15
20
25
32
40
50
68
79
97
116
123
153
41
43
47
47
50
66
13
15
20
29
33
40
45
47
5
56
59
67
450
590
820
680
860
1540
ZWB999T
1/2
3/4
1
11/4
11/2
2
21/2
3
15
20
25
32
40
50
65
80
60
67
80
94
100
114
165
173
41
43
47
47
50
66
104
112
13
15
20
25
27
33
55
73
45
47
52
56
59
66
80
92
450
590
860
860
1040
1810
5900
7710
E-mail: buyworldproducts@gmail.com  
ETW International