BURKERT膜片閥0262系列這種外部控制的直通閥經(jīng)由氣動操作。它由一個隔膜驅(qū)動裝置和一個二通閥套構(gòu)成。隔膜驅(qū)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(qū)動裝置外殼由環(huán)氧樹脂構(gòu)成。 BURKERT膜片閥0262系列特點: 無流量時關(guān)閉或打開 外殼材料:黃銅、不銹鋼 雙主軸密封件 緊湊型結(jié)構(gòu) BURKERT膜片閥0262系列技術(shù)參數(shù): 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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