Date Type Introduced
Click the category to see the exhibits available.
1904
1910
1916
1917
1919
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1944
1947
1949
1950
1952
1953
1954
1958
1959
1960
1961
1962
1969
Any exhibit shown in
Italic
leads to an equivalent valve type.
Return to Valves Index