the AL-161-4 ensures high-capacity throughput—rated at 25

It includes all critical seals and bearings necessary to address common wear points

Technicians should verify the condition of existing seals and apply high-temperature RTV or new gaskets as specified by the service manual

it can be used in specific hydronic heating systems where return temperatures must be tempered to prevent flue gas condensation

Dwyer Instruments PAFS-1003 Sensor 319825-402 the AL-161-4 ensures high-capacity throughput—ratedThe Dwyer Instruments PAFS 1003 is a high precision averaging flow sensor engineered for contractors who require accurate velocity pressure readings within VAV terminal units and fan terminal boxes. Featuring a 5 13 32" insertion length, this probe utilizes an "H" port for total pressure and an "L" port for static pressure, providing a clear differential signal for building automation systems. Built with durable ABS polycarbonate wetted materials, it