The protective wells for use with cartridge and block head thermostat units

In many applications involving the control of fluids and gases, the use of a well is recommended for :

1

When the removal of a hex or coupling head thermostat unit would require draining of the container in which it is inserted. Use of a well assembly permits removal of a thermostat unit at any time without other disturbance.

2

When surrounding ambient are subject to extreme changes thus affecting thermostat unit. The well makes it possible to insert the thermostat completely  into the medium being controlled . Thereby eliminating these ambient temperature effects, or "head effect ".

3

For protection of the thermostat unit from external forces or blow which would tend to affect its operation.

4

When fluids have a corrosive action on the brass shell of the thermostat unit.