ST5 Flow Switch. Easy-to-install. Must be mounted in vertical position. Minimum pressure is 75 PSI and maximum pressure is 3600 PSI. Minimum flow is 1 GPM and Maximum flow is 8 GPM. Maximum temperature is 167 Deg. F. Inlet and outlet ports are 3/8" FPT. Standard with 250V, 3-amp Reed switch for burner shut-down.

ST6 Switch. Same specifications as ST5 but has 3/8" MPT inlet and outlet and 1/4" gauge port. It can be mounted in either vertical or horizontal position.

ST505 Switch. Rated to 7300 PSI, 300 Deg. F. and 8 GPM. 3/8" FPT inlet and 3/8" MPT outlet. Housing is stainless steel.