Reversible control valve for steam engine model P20

Reversible control valve for steam engine model Screw fitting is 1/4 "X 40 TPI

Reversible Control Valve for Live Steam Engine with 1/4 x 40 TPI Fitting

Reversible control valve for steam engine model Live Steam

P20 Brass Reversible Control Valve for Live Steam Engine Models 1/4"x40 TPI

Microcosm P20 Brass Reversible Control Valve Compatible with Steam Engine Models

GV-A1 1/4"x40 TPI Brass 90° Globe Valve 3mm Bore for Live Steam Engine Model DIY

P20 Reversible Control Valve for Steam Engine Model