| 摘要 |
<p>A back pressure regulating valve (10) includes a valve body (14) having a fluid inlet (16), a fluid outlet (18), a central bore (20), a bonnet (22) housing a load spring (24) operatively coupled to a diaphragmn (26), and a chamber (30) in flow communication with the fluid inlet. A valve cartridge (12) includes a housing (34) sized to fit within the central bore and including a first portion (36), a second portion (38), a valve guide (40), and a flow passage (42). A valve seat (44) is disposed in the housing, and a valve plug (44) is shiftable between an open position permitting flow and a closed position preventing flow. The valve plug engages the valve guide, and a spring (52) biases the valve plug toward the open position. A retainer (54) is disposed adjacent the first portion of the housing and engages a portion of the valve plug to retain the valve plug in the housing.</p> |
