TA-25100VB unloader valve broken

by chris

Need the # for unloader valve for TA-25100VB.

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Oct 20, 2018
Pressure switch for a TA-25100VB
by: Doug in s.d.ca.

Google "Pressure switch for a TA-25100VB". You want a four port, 95-125 PSI (cut-in/cut-out) with unloader.

21.011A is TSC's part, but you'll want to call TSC if you want that - and there's a good chance they don't have it.

Good luck.

(Tips on buying a new pressure switch, with unloader, can be found here:


Oct 19, 2018
Unloader valve for TA-25100VB
by: Chris

My unloader broke as to where it can't be fixed. What is the correct number for the switch assembly?

Oct 08, 2018
TA-25100VB unloader valve ?
by: Doug in s.d.ca.

That's built into the pressure switch, Do you have air escaping there when the pump stops?

If so, you probably want the check valve...or you can try cleaning the existing one.

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