The Fisher 656 actuator agent original factory is a bracket mounted, positive acting diaphragm actuator that can perform throttling or switching operations. Fisher 656 product documentation, Fischer 656 product features and benefits, Fisher 656 product application specifications. The Fisher 656 actuator agent original factory is a bracket mounted, positive acting diaphragm actuator that can perform throttling or switching operations. Major applications include the operation of butterfly valves and built-in steam turbine valves, louvers, dampers, and other similar devices.
The Fisher 656 actuator agent original factory is a bracket mounted, positive acting diaphragm actuator that can perform throttling or switching operations. Fisher 656 product documentation, Fischer 656 product features and benefits, Fisher 656 product application specifications. The Fisher 656 actuator agent original factory is a bracket mounted, positive acting diaphragm actuator that can perform throttling or switching operations. Major applications include the operation of butterfly valves and built-in steam turbine valves, louvers, dampers, and other similar devices.
The Fisher 656 actuator agent original factory have following features:
1.Mounting versatility – the Fisher 656 actuator agent original factory base has four screw holes for mounting brackets or plates.
2. Actuator Long stroke — The deep film cap uses an actuator of size 60 to achieve maximum stroke of up to 105 mm (4.125 in. ).
3. Variety of applications – Wide selection of springs, suitable for almost any control application.The spring selection program is fast and accurate.
4. Harsh service – Rugged support and cover provide stability and corrosion protection.
When the actuator is completely installed and connected to the controller, it should be checked for correct travel, freedom from friction and correct PDTC or PDTO action.
The actuator spring and diaphragm have been selected to meet the requirements of the application. It should be noted that the actuator spring has a constant rate of compression and that adjustment of the spring compression merely shifts the initial spring setpoint up or down to make the actuator travel within the initial spring setpoint and the maximum diaphragm pressure indicated on the nameplate.
In some instances, however, such as high friction butterfly and ball valves, the actuator will fully stroke with less diaphragm pressure than indicated on the nameplate. To increase the pressure required to initiate actuator stem movement, turn the lower bearing seat (key 14) up toward the spring case. To decrease the pressure at which movement begins, turn the lower bearing seat down, away from the spring case.
| Actuator Size |
Maximum Casing Pressure for Actuator Sizing (2) , Bar (Psig) |
Maximum Excess Diaphragm Pressure (1) , Bar (Psig) |
Maximum Diaphragm Casing Pressure (2,3) , Bar (Psig) |
| 30 | 8.6(125) | 1.0(15) | 9.7(140) |
| 40 | 4.5(65) | 0.69(10) | 5.1(75) |
| 60 | 2.8(40) | 0.69(10) | 3.4(50) |
| ACTUATOR SIZE | MAXIMUM RATED STEM TRAVEL, mm (INCHES) |
|
| Standard Travel Stop |
Optional Travel Stop |
|
| 30 | 54(2.125) | Not available |
| 40 | 89(3.5) | 76(3) |
| 60 | 105(4.125) | 97(3.8125) |
Application of Fisher 656 actuator agent original factory
1. Coal gasification project
2. Clean energy gasification unit
3. Electricity
4. Hydrocarbons
5. Chemicals
6.Pulp and paper
7.Industrial environment
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