News

Ball check valve


A ball check valve comprising: a mounting base having a central hole; a valve case mounted on the mounting base, and the valve cage comprising: a base having a through hole defined concentrically with the central hole of the mounting bas; multiple holding fingers formed on the base, arranged along the through hole and forming a valve chamber, each of the holding fingers having a bent distal end and a stop formed adjacent to the corresponding bent distal end; and a filtering and regulating device mounted on the holding fingers; a valve ball movably mounted in the valve chamber in the valve cage to operationally open and close the central hole of the mounting base; and at least one sealing member mounted around the mounting base. wherein the mounting base further has an inner annular lip formed concentrically with the central hole of the mounting base, whereby the valve ball abuts on the inner annular lip to close the central hole; an outer annular lip formed concentrically with the central hole of the mounting base; and a collection recess formed between the inner and the outer annular lips. The main objective of the present invention is to provide a ball check valve with a feature of filtering and regulating a fluid flow through the ball check valve. Another objective of the present invention is to provide a ball check with a simple structure, which renders ease to assembly and low manufacturing cost. A ball check valve in accordance with the present invention comprises a mounting base, a valve cage and a valve ball. The mounting base has a central hole. The valve cage is mounted on the mounting base and comprises a base, multiple holding fingers and a filtering and regulating device. The base of the valve cage has a through hole defined concentrically with the central hole of the mounting base. The holding fingers are formed on the base and are arranged along the through hole forming a valve chamber. Each of the holding fingers has a bent distal end and a stop formed adjacent to distal end of the corresponding holding finger. The filtering and regulating device is mounted on the holding fingers and comprises multiple curved ribs. The curved ribs are respectively mounted on a pair of corresponding holding fingers and are arranged in parallel with the base of the valve cage to filter impurities from and regulate fluid flow through the ball check valve. The valve ball is movably mounted in the valve chamber in the valve cage to selectively open and close the central hole of the mounting base. The mounting base further has an inner annular lip formed concentrically with the central hole of the mounting base, whereby the valve ball abuts on the inner annular lip to close the central hole. Consequently, the ball check valve in accordance with the present invention not only services simply as a check valve, but also services as a filter and regulator for the fluid flow. Furthermore, since the valve ball abuts on the inner annular lip to close the ball check valve and a contact surface between the valve ball and the annular lip is smaller than the inclined valve seat of the conventional check valve, the annular lip is not easy to be contaminated. Leakage between the valve ball and the valve seat is overcome by present invention. The valve ball will not be easy to be clogged by the contaminated valve seat.

                                                                                                     Shanghai Remy Valve Manufacturing Co., Ltd

2012-01-06 04:57

Back