型  号 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