McVitie Weston valve collection, Marconi valve, type MT.5
McVitie Weston valve collection, Frelat valve, horned type
McVitie Weston valve collection, ETA valve, horned triode type
McVitie Weston valve collection, Ediswan E.S.W.501
McVitie Weston valve collection, Tungsram valve, type OQ.70/1000
McVitie Weston valve collection, Western Electric, marked 138104D
McVitie Weston valve collection, air cooled triode
McVitie Weston valve collection, ballcock type transmitter
McVitie Weston valve collection, Osram valve, type T.250
Cylinder drain and relief valve
1870-1879
McVitie Weston valve collection, RCA de Forest valve, type 800
McVitie Weston valve collection, Marconi valve, type V24
McVitie Weston valve collection, Marconi valve, type T.50
Spring loaded valve
1920-1940
McVitie Weston valve collection, mercury arc valve
McVitie Weston valve collection, STC valve, type 3H/150J
McVitie Weston valve collection, Mullard valve, type AT.200
McVitie Weston valve collection, Osram-GEC valve, type T.3
McVitie Weston valve collection, Mullard valve, type VT13
McVitie Weston valve collection, Mullard valve, type TZ1-75
Three steam heating valves, relief, reducing, and Mason's reducing valve
Piece of laboratory apparatus
1851-1900
Sectioned example of S.S.8 "Snapshut" petrol tap.
Collection of 34 gas filled, cold cathode, stabilizer valves (GCS)
Pair of "Supatap" model RT/D hot and cold pillar valves (c.1972)
1972
Radio valves
Valves for wireless station A510, c. 1965
1965
McVitie Weston valve collection, mercury arc valve
Valve from nitrous oxide cylinder
Medical oxygen valve
1935-1955