For 5 PSI systems

When you are performing a filtration system maintenance call on industrial combustion equipment

If indoor venting is required

The low-wattage 24V coil minimizes electrical load on the transformer while providing the magnetic force necessary to shift the internal slide even under high-head pressure conditions

Trane BLK0288 Terminal Block 318820-201 For 5 PSI systemsThe Trane BLK0288 Terminal Block is a critical OEM replacement part designed for reliable power distribution within Trane HVAC control circuits and air handling units. This 3 pole terminal block is rated for 20A at 300V, providing a secure connection point for multi wire configurations in light commercial and residential equipment. Engineered for durability, the BLK0288 features high torque screw terminals that resist loosening due to mechanical