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  Balancing valve
 

FULL BORE STRAIGHT STOP BALANCING VALVE
ZWB777S
DN6 NPT
1/4"NPT DRAIN PLUGS
(MUST BE SPESIFIED AT TIME OF ORDER)
 
DZR METAL
Dezincification of duplex brass , which is a form of corrosion. may occur when in contact with certain aggressive waters.

Dezincification selectively removes zinc from the alloy, leaving behind a porous. Copper-rich structure that has little mechanical strength. An in service valve suffering from Dezincification has white powdery substance of mineral stains on its exterior surface.

To overcame the problem special copper alloy. Which contain an inhibitor and undergo heat treatment, have been developed which are assistant to corrosion by dezincification.

/mm
/g
G
DN
A
B
C
D
ZWB777S
ZWB777T
1/2
15
100
97
70
27
750
750
3/4
20
100
97
70
32
900
900
1
25
120
107
70
41
1400
1400
1 1/4
32
140
112
70
50
1900
1900
1 1/2
40
150
112
95
55
2300
2300
2
50
165
136
95
70
3500
3600
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