Dwyer Instruments 1640-0 Switch 318423-701 Common Questions What is the

Common Questions What is the torque rating for the H-series cap screws

01 replacement ensures proper fit and performance without field modifications

always verify your specific model number

The brass body construction provides structural integrity

the kit includes the reinforced paddles along with the necessary screws and washers for a complete flow switch repair

Dwyer Instruments 1640-0 Switch 318423-701 Common Questions What is theThe Dwyer Instruments 1640 0 Switch is a high precision differential pressure switch engineered for specialized HVACR applications requiring floating contact null switch logic. Unlike standard snap acting switches, the 1640 series utilizes a single pole double throw (SPDT) floating contact design to provide two distinct actuation pointshigh and lowwith a defined "null" zone in between. This makes it an ideal solution for motorized damper control and