Valve Accessories

Move faster and cleaner with Siemens valve accessories

From booster relays to filter regulators Siemens valve accessories are designed to work with valve positioners.


61 Booster relay - valve accessory

Series 61 Booster Relays

The series 61 Booster Relays reproduce pneumatic signals in a 1:1 ratio for applications where input isolation or increased flow capacity are required.

  • 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.

  • Epoxy powder coating provides excellent corrosion resistance


Input pressure acting upon the effective area of the upper diaphragm, produces a force that is opposed by the output pressure exerted upon the effective area of the lower diaphragm.  The opposing forces are in a direct 1:1 ratio.