61FE、61VH气动继动器Series 61
61VH继动器、61FE继动器、61F继动器、61H继动器、61L继动器、
Model 61H、Model 61VH、Model 61FE、Model 61F、Model 61L、

61FE、61VH气动继动器Series 61
The series 61 Booster Relays reproduce pneumatic signals in a 1:1 ratio for applications where input isolation or increased flow capacity are required.

61FE、61VH
61H is a High-Capacity Booster Relay designed to improve the stroking speed of large diaphragm valves.
61VH is a High-Capacity Booster Relay designed for use on control valve actuators that require very fast stroking speeds.  Both 61H and 61VH feature a stabilizing bypass needle valve between the input and output, which eliminates the need for an externally piped bypass.