Mini-size flow switch, brass upper and lower body, 1-1/4" NPT, brass tee.

Liquid Flow Switch, Ambient Temperature – Maximum 167 Degrees F, Ambient Temperature – Minimum -4 Degrees F, Connection Size 1 1/4 in, Connection Type NPT, Contact Rating (AC) 5 A @ 125/250V, Contact Rating (DC) 11 A (Inductive) @ 30V (CSA, ATEX and IECEx Models), 5 A Resistive @ 30V (CSA, ATEX and IECEx Models), Filter Rating – Maximum Not Applicable, Flow Rate – Maximum Not Applicable, Flow Rate – Minimum Not Applicable, Flow Switch Type Paddle, For Pipe Size 1/2 in, 1/4 in, 2 in, 3/8 in