| Узел | Модель |
| (139) - 1-SPOOL MAIN CONTROL VALVE, (USED WITH LEVELER CIRCUIT) | (35EC) - DROTT SERIES-B CRAWLER EXCAVATOR (1/69-12/77) |
| (141) - 4-SPOOL MAIN CONTROL VALVE, (USED WITH TOOL, HOIST, LEFT TRACK AND AUXILIARY CIRCUITS) | (35EC) - DROTT SERIES-B CRAWLER EXCAVATOR (1/69-12/77) |
| (143) - 4-SPOOL MAIN CONTROL VALVE, (USED WITH SWING, CROWD, RIGHT TRACK AND FAST HOIST CIRCUITS) | (35EC) - DROTT SERIES-B CRAWLER EXCAVATOR (1/69-12/77) |
| (139) - 1-SPOOL MAIN CONTROL VALVE, (USED WITH LEVELER CIRCUIT) | (35YC) - DROTT SERIES-B CRAWLER EXCAVATOR (1/69-12/77) |
| (141) - 4-SPOOL MAIN CONTROL VALVE, (USED WITH TOOL, HOIST, LEFT TRACK AND AUXILIARY CIRCUITS) | (35YC) - DROTT SERIES-B CRAWLER EXCAVATOR (1/69-12/77) |
| (143) - 4-SPOOL MAIN CONTROL VALVE, (USED WITH SWING, CROWD, RIGHT TRACK AND FAST HOIST CIRCUITS) | (35YC) - DROTT SERIES-B CRAWLER EXCAVATOR (1/69-12/77) |
| (147) - 1-SPOOL MAIN CONTROL VALVE, (USED WITH LEVELER CIRCUIT) | (40EC) - DROTT SERIES-B CRAWLER EXCAVATOR (1/71-12/84) |
| (149) - 4-SPOOL MAIN CONTROL VALVE, (USED WITH AUXILIARY, HOIST, LEFT TRACK AND TOOL) | (40EC) - DROTT SERIES-B CRAWLER EXCAVATOR (1/71-12/84) |
| (151) - 4-SPOOL MAIN CONTROL VALVE, (USED WITH CROWD, FAST HOIST, RIGHT TRACK AND SWING) | (40EC) - DROTT SERIES-B CRAWLER EXCAVATOR (1/71-12/84) |
| (147) - 1-SPOOL MAIN CONTROL VALVE, (USED WITH LEVELER CIRCUIT) | (40YC) - DROTT SERIES-B CRAWLER EXCAVATOR (1/71-12/84) |
| (149) - 4-SPOOL MAIN CONTROL VALVE, (USED WITH AUXILIARY, HOIST, LEFT TRACK AND TOOL) | (40YC) - DROTT SERIES-B CRAWLER EXCAVATOR (1/71-12/84) |
| (151) - 4-SPOOL MAIN CONTROL VALVE, (USED WITH CROWD, FAST HOIST, RIGHT TRACK AND SWING) | (40YC) - DROTT SERIES-B CRAWLER EXCAVATOR (1/71-12/84) |
| (H08) - CONTROL VALVES - 4 SPOOL | (50) - DROTT SERIES-A CRAWLER EXCAVATOR (1/68-12/79) |
| (H10) - CONTROL VALVES - 3 SPOOL | (50) - DROTT SERIES-A CRAWLER EXCAVATOR (1/68-12/79) |
| (H11A) - CONTROL VALVES - 2 SPOOL | (50) - DROTT SERIES-A CRAWLER EXCAVATOR (1/68-12/79) |
| (123) - 1-SPOOL MAIN CONTROL VALVE, (USED WITH LEVELER CIRCUIT) | (50) - DROTT SERIES-B CRAWLER EXCAVATOR (S/N 550 & AFTER) (1/72-12/88) |
| (125) - 4-SPOOL MAIN CONTROL VALVE, (USED WITH CROWD, FAST HOIST, RIGHT TRACK AND SWING) | (50) - DROTT SERIES-B CRAWLER EXCAVATOR (S/N 550 & AFTER) (1/72-12/88) |
| (127) - 4-SPOOL MAIN CONTROL VALVE, (USED WITH AUXILIARY, HOIST, LEFT TRACK AND TOOL) | (50) - DROTT SERIES-B CRAWLER EXCAVATOR (S/N 550 & AFTER) (1/72-12/88) |