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- 產(chǎn)品名稱: 64系列蒸汽熱水鍋爐液位開關(McDonnell & Miller) 產(chǎn)品型號: 64 適用于家庭、商業(yè)、工業(yè)蒸汽鍋爐 重型的 最大鍋爐壓力：50psi（3.5kg/cm2） 雙開關輸出 64、64-A、64-B、64-M可選 UL、FM認證 型 號 描 述 63 Low water cut-off 63-B 63 w/ float block 63-BM 63 w/float block & manual reset 63-M 63 w/manual reset 64 Manual reset 64-A 64 w/quick hook-up fittings 64-B 64 w/float block 64-M 64 w/manual reset 61 Low water cut-off 67 Low water cut-off 67-G 67 for millivolt service 67-LQHU 67 without quick hook-up fittings 67-M 67 w/manual reset 69 Low water cut-off w/41⁄8" (105mm) insertion length 69-MV-P 69 w/millivolt switch 169 69 w/31⁄8" (79mm) insertion length 269 69 w/21⁄4" (57mm) insertion length 369 69 w/13⁄4" (45mm) insertion length 369-MV 369 w/millivolt switch 469 69 w/13⁄16" (30mm) insertion length 569 469 w/13⁄16" (30mm) insertion length 4.0 (1.8) w/1⁄4" NPT tapping 150S Combination low water cut-off/pump controller 150S-B 150S w/float block 150S-B-M 150S-B w/manual reset 150S-BMD 150S w/float block and max. dif. 150S-BM-MD 150S-BMD w/manual reset 150S-MD 150S w/maximum differential 150S-M 150S w/manual reset 150S-M-MD 150S-M w/maximum differential 158S 150S w/2 SPDT switches 159S 150S w/2 SPST switches 158S-M 158S w/manual reset 158S 150S w/2 SPDT switches 157S 150S low water cut-off w/water column 157S-MD 157S w/maximum differential 157S-A 157S w/alternate tappings 157S-A-M 157S-A w/manual reset 157S-M 157S w/manual reset 157S-M-MD 157S-M w/maximum differential 157S-R 157S w/alternate tappings 157S-R-M 157S-R w/manual reset 157S-RBP-MD 157S w/2 integral conductance probes 157S-RL 157S w/alternate tappings 157S-RL-M 157S-RL w/manual reset
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