| VGD20...系列雙氣閥
品牌：SIEMENS（西門子）
產(chǎn)地：德國
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| 產(chǎn)品介紹 |
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Double gas valves for use on gas trains, consisting of 2 safety shutoff valves of class A. Suited for use in connection with gases of gas families I...III.
The double gas valve is to be combined with 2 actuators of the SKP… line (e.g. to provide the functions of 2 safety shutoff valves in series, with different types of gas pressure governor if required).
In combination with the appropriate SKP… actuators, the gas valve also serves as a:
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Shutoff valve (in connection with the SKP10...)
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Control valve with shutoff function (in connection with the SKP20..., SKP27..., SKP50... or SKP70...)
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| 安裝 |
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The electrohydraulic SKP10... actuator, which is used for shutoff functions, must always be mounted on the inlet side while the actuators with integrated governor (SKP20..., SKP27..., SKP50... or SKP70...) must always be fitted on the outlet side of the valve (with a contoured disk)
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To mount the double gas valve, 2 flanges type AGA41... / AGA51... are required
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To prevent cuttings from falling inside the valve, first mount the flanges to the piping and then clean the associated parts
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Ensure that the O-rings are fitted between the flanges and the valve body
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| 結(jié)構(gòu) |
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The double gas valves VGD20... are of the normally closed type and have 2 disks, one non-contoured disk on the inlet side and one contoured disk on the outlet side.
The stems are guided on both sides of the disks, thus ensuring precise alignment and tight shutoff. The closing force of the return spring is supported by the prevailing gas pressure (class A to EN 161). A strainer on the inlet side protects the valve and downstream controls against dirt. Valve body and connecting flanges are made of die-cast aluminium, the seals of nitril rubber, and the stems of stainless steel. The double gas valves feature a pilot gas connection Rp3/4". Gas valve, flanges and actuators are supplied as separate items. No special tools are required for assembly.
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型號表 |
| 口徑 |
流量（在10mbar壓差下）m3/h |
型號 |
| 1-1/2" |
85 |
VGD20.403 |
| 2" |
100 |
VGD20.503 |
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| 技術(shù)參數(shù) |
| 主要參數(shù) |
| 安全等級 |
A（EN161） |
| 可用氣體 |
燃氣1，2，3或空氣 |
| 內(nèi)部溫度 |
-15...+60ºC |
| 功率 |
8VA |
| 安裝位置 |
彈簧水平或豎直 |
| 材料 |
模壓鑄鋁 |
| 型號 |
靜態(tài)承壓 |
動態(tài)承壓 |
重量kg |
V1，V2間體積升 |
| VGD20.403 |
600 |
600 |
3.2 |
0.75 |
| VGD20.503 |
600 |
600 |
3.2 |
0.8 |
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| 環(huán)境條件 |
| 運輸環(huán)境 |
IEC 721-3-2 |
| 內(nèi)部條件 |
class 2K2 |
| 機械條件 |
class 2M2 |
| 溫度范圍 |
-15...+60ºC |
| 濕度 |
<95% |
| 運行環(huán)境 |
IEC 721-3-3 |
| 內(nèi)部條件 |
class 3K5 |
| 機械條件 |
class3M2 |
| 溫度范圍 |
-15...+60ºC |
| 濕度 |
<95% |
| 不得進水 |
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