McVitie Weston valve collection, MOV valve, type MH4
- maker:
- M-O Valve Company Limited
MOV valve, type MH4, labelled Exptl. Valve No. 4, (RMW/F9A - McVitie Weston number), by M-O Valve Co. Limited.
MOV valve, type MH4, labelled Exptl. Valve No. 4, (RMW/F9A - McVitie Weston number), by M-O Valve Co. Limited.