产品名称:64系列蒸汽热水锅炉液位开关(McDonnell&Miller)产品型号:64适用于家庭、商业、工业蒸汽锅炉重型的***大锅炉压力：50psi（3.5kg/cm2）双开关输出64、64-A、64-B、64-M可选UL、FM认证型号描述63Lowwatercut-off63-B63w/floatblock63-BM63w/floatblock&manualreset63-M63w/manualreset64Manualreset64-A64w/quickhook-upfittings64-B64w/floatblock64-M64w/manualreset61Lowwatercut-off67Lowwatercut-off67-G67formillivoltservice67-LQHU67withoutquickhook-upfittings67-M67w/manualreset69Lowwatercut-offw/41⁄8"(105mm)insertionlength69-MV-P69w/millivoltswitch16969w/31⁄8"(79mm)insertionlength26969w/21⁄4"(57mm)insertionlength36969w/13⁄4"(45mm)insertionlength369-MV369w/millivoltswitch46969w/13⁄16"(30mm)insertionlength569469w/13⁄16"(30mm)insertionlength4.0(1.8)w/1⁄4"NPTtapping150SCombinationlowwatercut-off/pumpcontroller150S-B150Sw/floatblock150S-B-M150S-Bw/manualreset150S-BMD150Sw/floatblockandmax.dif.150S-BM-MD150S-BMDw/manualreset150S-MD150Sw/maximumdifferential150S-M150Sw/manualreset150S-M-MD150S-Mw/maximumdifferential158S150Sw/2SPDTswitches159S150Sw/2SPSTswitches158S-M158Sw/manualreset158S150Sw/2SPDTswitches157S150Slowwatercut-offw/watercolumn157S-MD157Sw/maximumdifferential157S-A157Sw/alternatetappings157S-A-M157S-Aw/manualreset157S-M157Sw/manualreset157S-M-MD157S-Mw/maximumdifferential157S-R157Sw/alternatetappings157S-R-M157S-Rw/manualreset157S-RBP-MD157Sw/2integralconductanceprobes157S-RL157Sw/alternatetappings157S-RL-M157S-RLw/manualreset)