Watson McDaniel TSP Series Trip Stop Pilots

Watson McDaniel TSP Series Trip Stop Pilots

Watson McDaniels

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The TSP Series are used to prevent over-pressurization of downstream steam piping systems. The TSP is typically installed on an HD regulator downstream of the main Pressure Reducing HD. Typical applications are when piping code allows for an alternative to a safety valve discharging to atmosphere. The trip pressure is factory set and must be specified at the time of order.


  • The TSP-Trip Stop Pressure Pilot is used to protect downstream steam pressure from over pressurizing
  • Accuracy to within ±2 PSI
  • 3 overlapping spring ranges to choose from
  • Pilot is installed using 1/4" NPT Connection
  • Solid floating diaphragm
  • Watson McDaniel's pilots can be used with other manufacturers’ regulators

How to Size/ Order:

Specify: • Trip Set Pressure (factory set)
Example: TSP-B-040: TSP Pilot with 40 PSIG set pressure
Specify: • HD regulator body

• Regulator size or capacity

• End connections (threaded, 150/300# flanged)


*Click Here to Help Size Your HD Series Regulator*

PDF Download: TSP Series Spec Sheet

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