不銹鋼閘閥具備流動阻力小，適用工作壓力、環(huán)境溫度大等優(yōu)點，是一種常用截斷閥，用以斷開或接入管道里的物質(zhì)。管徑收攏可以使零件規(guī)格變小，開、閉需要力相對應減少，同時還可以擴張零部件的應用領域。但管徑收攏后。流動阻力損害擴大。低電壓閘閥廣泛采用是指生鐵原材料，生鐵閘閥經(jīng)常產(chǎn)生閥體凍破、閘板掉下來等風險難題，生鐵閘閥的碳素鋼閥座易生銹，填充料密封墊質(zhì)量不好，里外泄露比較嚴重。
The stainless steel gate valve has the advantages of small flow resistance, high applicable working pressure and ambient temperature. It is a common block valve used to disconnect or connect the material in the pipeline. Pipe diameter collapse can reduce the size of parts, reduce the opening and closing force, and expand the application field of parts. But after the pipe diameter is closed. The damage of flow resistance is enlarged. The wide use of low voltage gate valves in China refers to the raw materials of pig iron. The pig iron gate valves often produce risk problems such as valve body freezing, gate plate falling, etc. The carbon steel valve seat of the pig iron gate valve is easy to rust, the quality of the filler gasket is poor, and the internal and external leakage is relatively serious.
不銹鋼閘閥的結(jié)構(gòu)特點能夠簡要概括為下述四點：
The structural characteristics of stainless steel gate valve can be summarized as follows:
1、重量較輕：本身采用球黑生鐵做成，凈重較傳統(tǒng)式閘閥凈重緩解約20~30百分比，安裝維修便捷。
1. Light weight: it is made of nodular black pig iron, and its net weight is about 20~30% slower than that of traditional gate valve, which is convenient for installation and maintenance.
2、總體包塑：閘板采用高質(zhì)量的塑膠開展總體內(nèi)、外包塑，塑膠與球墨鑄鐵鑄閘板然后牢固，不容易掉下來及延展性記憶力佳。
2. Overall plastic coating: the ram is made of high-quality plastic for overall internal and external plastic coating. The plastic and ductile iron cast ram is then firm, which is not easy to fall off and has good ductility and memory.

3、厚底式閘座：傳統(tǒng)閘閥往往會在通清洗管后立即因外在因素例如石塊，物塊、混凝土、鐵銷、臟物等沉積于閥底凹形槽內(nèi)，易造成沒法關(guān)掉密切而產(chǎn)生滲水狀況，彈力座封閘閥底端采用與自來水管機同的厚底設計方案，不容易導致臟物沉積，使液體暢行無阻。
3. Thick-bottomed gate seat: Traditional gate valves often deposit in the concave groove at the bottom of the valve due to external factors such as stones, blocks, concrete, iron pins, dirt, etc. immediately after passing through the cleaning pipe, which is easy to cause water seepage due to the inability to close. The bottom end of the resilient seat sealing gate valve adopts the same thick bottom design scheme as the water pipe machine, which is not easy to cause dirt deposition and make the liquid flow smoothly.
4、鑄造閥體：閥體采用高精鑄件，準確的結(jié)構(gòu)尺寸促使閥體內(nèi)部結(jié)構(gòu)不需要任何深度加工就可以確保閥體的密閉性。
4. Cast valve body: the valve body is made of high-precision casting, and the accurate structure size makes the internal structure of the valve body not require any deep processing to ensure the tightness of the valve body.
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