PRESSURE SWITCHES - The pressure switch turns the heater off if the pressure drops below a standard set in the switch. There are varying levels of controls available at varying costs.
varying levels of controls
available at varying costs. The normal switch (PS1) shuts off at 3 PSI is
$75. The (PS2) shuts off at varying levels set by the customer costs $205.
The (PS3) shuts off at 100 PSI and costs $160.
Each switch comes with a delay timer that delays turn on when the system restarts. This helps avoid air in the system. Click here to order.