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| FULL BORE STRAIGHT STOP BALANCING VALVE |
| ZWB777S
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DN6 NPT 排泄塞（必须在订购时指定）
1/4"NPT DRAIN PLUGS
(MUST BE SPESIFIED AT TIME OF ORDER) |
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抗脱锌金属。 DZR METAL
两相黄铜脱锌现象,是一种腐蚀,当接触到某些侵蚀性水时可能发生. Dezincification of duplex brass , which is a form of corrosion. may occur when in contact with cart ain aggressive waters. 
脱锌 现象有选择的从合金中去除锌元素,造成多孔、富铜结构，降低了机械强度。应用中的阀门如果出现脱锌现象，在产品表面就会出现粉状物质或矿物污点。Dezincification selectively removes zinc from the alloy, laving behind a porous. Copper-rich structure that has little mechanical strength. An in serveice valve suffering from Dezincification has a white powdery substance of mineral stains on its exterior surface.
为了解决这个问题，特殊的铜合金包含防蚀剂，并经过热处理，已经可以抵抗脱锌的腐蚀。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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