Declutch gearbox is specially designed for butterfly valves, ball valves,and plug valves,etc. together with pneumatic actuators. This device allows manuel operation during installation and system testing when air resource is not loaded.It can be mounted directly on most of the popular rack&pinion style pneumatic actuators.
| SPARE PARTS | ||||
| NO | PART NAME | STANDARD MATERIAL | ||
| PGB30-PGB550 | PGB850-PGB3200 | PGBA30-PGBA130 | ||
| 1 | COVER | Cast Iron | DUCTİLE IRON | ALUMINIUM ALLOY |
| 2 | BODY | Cast Iron | DUCTİLE IRON | ALUMINIUM ALLOY |
| 3 | DRIVE GEAR | DUCTILE IRON | ||
| 4 | GEAR COVER | Cast Iron | DUCTILE IRON | ALUMINIUM ALLOY |
| 5 | UPPER MALE SQUARE STEM | CARBON STEEL | ||
| 6 | HANDWHEEL SHAFT | CARBON STEEL WITH CHROME PLATED | ||
| 7 | HANDWHEEL | PLATED CARBON STEEL | ||
| 8 | POSITION LOCK ASSY | PLATED CARBON STEEL | ||
| 9 | POSİTİON LEVER ASSY | PLATED CARBON STEEL | ||
| 10 | COVER BOLTS | CARBON STEEL WITH ZINC PLATED | ||
| 11 | LIMITING STOPS | |||
| PERFORMANCE DATA TABLE OF NST-PGB SERIES ALUMINUM ALLOY BODY | |||||
| MODEL | GEAR RATIO | MECHANICAL EFFICIENCY (%) | MAX.OUTPUT TORQUE (Nm) | WEIGHT (KGS) | DOUBLE ACTING ACTUATOR MODEL |
| NST-PGB30 | 40:1 | 8.6 | 300 | 2,7 | NST-DA63 / NST-DA115 |
| NST-PGN36 | 38:1 | 8.6 | 360 | 4,3 | NST-DA63 / NST-DA115 |
| NST-PGB80 | 36:1 | 8.5 | 810 | 6,8 | NST-DA100 / NST-DA145 |
| NST-PGB130 | 50:1 | 8.5 | 1310 | 13,5 | NST-DA160 / NST-DA190 |
| NTS-PGB280 | 55:1 | 19.0 | 2800 | 25,8 | NST-DA210 / NST-DA240 |
| NST-PGN550 | 52:1 | 19.0 | 5500 | 40,3 | NST-DA270 / ...... |
NST-PGB