Method of manufacturing a butterfly valve

Details Method of manufacturing a butterfly valve Method of manufacturing a butterfly valve

1976-07-12

1977-08-02

Lanham, C.W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29416, 251305, B23P 1500, B21D 5300, F16K 122

Patent

active

040387348

ABSTRACT:
The method of manufacturing a butterfly valve from plate steel which comprises flame cutting the outer configuration of the valve body and flame cutting a circular disc from the center of the body resulting in a water opening through the body and utilizing the disc as the closure member. The valve is constructed in such a manner that no castings or welding is required.

REFERENCES:
patent: 1039722 (1912-10-01), Fullman
patent: 2983030 (1961-05-01), Spicacci
patent: 3025035 (1962-03-01), Swain
patent: 3081791 (1963-03-01), Wheatley
patent: 3172192 (1965-03-01), Dresden
patent: 3318567 (1967-05-01), Gifford
patent: 3552341 (1971-01-01), Lannin
patent: 3591133 (1971-07-01), Miles et al.
patent: 3658292 (1972-04-01), Takigawa
patent: 3698686 (1972-10-01), Williams
patent: 3803690 (1974-04-01), Cann et al.

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