Johnson Controls F261MFH-V01C Flow Switch Refrigerant the stem utilizes a 1/4-20

the stem utilizes a 1/4-20 NPT threaded end for secure attachment to the valve body and a 5/16-18 NPT threaded end for the float

Balanced Port Design: Compensates for fluctuating head pressures and ambient temperatures

This product includes the clevis

Compact Footprint: Designed for industrial air preparation in confined enclosures or individual tool stations

while the TS121A is rated for 80-130°F

Johnson Controls F261MFH-V01C Flow Switch Refrigerant the stem utilizes a 1/4-20Johnson Controls F261MFH V01C Flow Switch, Inline Low Flow Model, Nema 4 Enclosure, 24V 240 Vac, SPDT, 3 4" x 3 4" Inlet and Outlet F261MFH V01C is the direct replacement for F61MD 2