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1.Product Structure
The ZSFZ Wet System Alarm Valve is mainly based on the structural principle of the partition/seat wet system alarm valve. The valve body is made of grey cast iron. The disc and seat are made of copper alloy; the pin axis and internal screws use stainless steel; and the sealing spacer uses Buna-N rubber. The disc connecting part employs a special arc connection, making the disc open and close with flexibility, and well-positioned. An inlet, an outlet, an alarm opening and a testing entrance are set up according to their functional requirements. The ZSFZ Wet System Alarm Valve (DN150) that Jieter manufactures is of the internally-balanced type; the DN100 and DN200 are externally-balanced. Their structures are as shown in Figure 1 and Figure 2; their heights and sizes are listed in Table 1.
2.Technical parameters
|
Model
|
Nominal diameter
|
Rated working pressureMPa |
Lowest use of temperature(°C)
|
Highest use of temperatur(°C)
|
Head lossMPa
|
Action flow(L/min) |
|
(mm)
|
||||||
|
ZSFZ-100
|
100
|
1.2 |
4
|
70
|
0.02
|
20Q80 |
|
ZSFZ-150
|
150
|
1.2 |
4
|
70
|
0.02
|
20Q80 |
| ZSFZ-200 | 200 | 1.2 |
4
|
70
|
0.02
|
20Q80 |
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