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詳細介紹
BURKERT膜片閥0262系列這種外部控制的直通閥經由氣動操作。它由一個隔膜驅動裝置和一個二通閥套構成。隔膜驅動裝置能夠使主軸連同閥錐朝彈簧的方向運動，進而接通閥門。主軸設計有雙層密封件，但沒有壓蓋。驅動裝置外殼由環氧樹脂構成。
BURKERT膜片閥0262系列特點：
無流量時關閉或打開
外殼材料：黃銅、不銹鋼
雙主軸密封件
緊湊型結構
BURKERT膜片閥0262系列技術參數：
Body material | Brass, stainless steel |
Inner part valve | Stainless steel |
Actuator | Epoxy resin |
Seal material | NBR, FKM, PTFE/FKM, EPDM, PTFE/EPDM |
Medium |
|
NBR | neutral medium |
| (e.g. compressed air, town gas, water, hydraulic oil) |
FKM | per-solution, oxygen, hot air |
EPDM | oil and fat-free medium |
| e.g. hot water, alkaline washing and bleaching lyes |
PTFE/EPDM | oil and fat-free medium, e.g. hot water and steam |
(PFTE seal with EPDM O-Ring) |
|
PTFE/FKM | hot oils, hydrocarbonated water, aromatics and steam |
(PTFE seal with FKM O-Ring) |
|
Viscosity | max. 100 mm2/s |
Medium temperature |
|
NBR | -10 up to + 90 ºC |
FKM | -10 up to +100 ºC |
EPDM | -10 up to +100 ºC |
PTFE/EPDM | -10 up to +140 ºC |
PTFE/FKM | -10 up to +140 ºC |
Control medium | neutral gases and liquids, in particular air, |
| water, hydraulic liquids up to max. +90 ºC |
Pilot pressure | see diagram |
Ambient temperature | -10 up to +90 ºC |
Installation | As required, preferably with actuator upright |
|
|
Flow rate | measured at +20°C, 1 bar pressure at valve inlet |
Kv value water [m3/h]: | and free outlet |
Pressure values [bar] | Measured as overpressure to the atmospheric pressure |
Response times [ms]: | Measured at valve outlet at 6 bar and +20ºC. |
Opening | Pressure relief 0 90% |
Closing | Pressure drop 100 to 10% |
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