Brass QD Coupler with poppet check stop prevents leaks with disconnected.
Used on smaller carpet cleaning machines like the Durrmaids brand and a select few others.
Has a 1/8" Fip threaded hole for mounting.
Compare to current or past OEM associations:
Eaton Hansen B1K11 Brass ISO-B Interchange Hydraulic Fitting, Plug with Valve
UNSPSC Code 40141734