Mechanical Controllers

The L91B/D controllers sense pressure changes, thus actuating an internal potentiometer and changing the electric resistance of the potentiometer in proportion to those changes.
The controllers are suitable for direct control of the proportional motors of automatic burners inside high limit controllers or for steam heater equipment.

Catalog (l91b_d_e)

User's Manual (ai-1140e)

The L404F senses pressure changes and activates internal switch, resulting in ON/OFF action of an electric circuit.
The controller makes and breaks the connection to solenoid valves or electric motor valves, and is used for pressure control involving fluids, air or steam. It is also used as a limit control or alarm switch.

Catalog (l404f_e)

User's Manual (CP-UM-1781E)

The C6065 functions as a combustion airflow supervisor, with a safe start interlock, suitable for positive or negative pressure applications.
This switch can be used with air or any normal product of gas combustion.

Catalog (c6065_e)

The C6097A gas pressure switch is used to detect the pressure of city gas, natural gas, LP gas, air, etc.
The switch performs ON/OFF control of an external electrical circuit in accordance with the set point. This switch has a wide range of uses, such as detecting the upper or lower limit pressure of gas or air to be supplied to a gas combustion system, or detecting a clogged interlock filter on a burner blower.

Catalog (c6097a_e)

User's Manual (CP-UM-5109E)