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US 9,285,042 B2Granted
Diaphragm valve and seat holder unit for diaphragm valve
AssigneeFujikin Incorporated
InventorsTaichi Kitano, Tsutomu Shinohara, Michio Yamaji, Ryutaro Nishimura
Life of this patent
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Abstract
A diaphragm valve and a seat holder unit for the diaphragm valve which allows easy replacement of a seat is provided. The diaphragm valve includes a retainer configured to hold a seat holder. The seat holder is demountably arranged on a body to hold a seat. The retainer has a substantially cylindrical shape and includes an inward flange portion receiving the outer peripheral edge portion of the seat holder, and is demountably mounted on the diaphragm holding members in a state of holding the seat holder.
Claims4
A diaphragm valve including:
- a body provided with a fluid channel;
- a seat arranged on a peripheral edge of the fluid channel formed on the body;
- a seat holder demountably arranged on the body and configured to hold the seat;
- a diaphragm configured to open and close the fluid channel by being pressed against or moved away from the seat;
- a diaphragm holding member configured to clamp an outer peripheral edge portion of the diaphragm with the seat holder;
- a vertical moving device configured to move a diaphragm holder, the diaphragm holder configured to hold a center portion of the diaphragm, and the vertical moving device configured to move the diaphragm upward and downward;
- and
- a retainer configured to hold the seat holder, and thereby form a seat holder unit, wherein the retainer is demountably mounted on the diaphragm holding member in a state of holding the seat holder, and wherein the seat holder unit is adapted to be demounted from the diaphragm holding member along with the seat.
5 more elements
Dependencies are inferred from the claim text.