Water Pressure switch

[Deleted member 2053]

I need to source a mains voltage, water pressure switch to install in pipework so that I can cause a circulator to shut off when the system pressure is low. Anybody have any good suggestions? Searching the web doesn't seem to throw up anything of use.
Thanks

 

[SimonJohns]

Danfoss do them

Available at most parts or plumb centre

Do you want a fixed pressure or variable?

 

[Deleted member 2053]

Preferably variable. Thanks. I did ask my normal plumb center and they denied all knowledge. I'll have a look at the danfoss web site.