Chinabase Machinery is a group of manufacturing facilities, offering one-stop solution for mechanical power transmission products in China.
Our product range also covers locking assemblies (clamping elements/locking device), taper bushes, QD bushes, bolt-on hubs, torque limiters, shaft collars, motor bases and motor slides, chain detachers, chain guides, universal joint, rod ends and yokes.
china manufacturer of bush&hub,Specialist in:taper bushes,qd bushes,Split taper bushings,weld on hubs,Steel hubs,Taper Bore adapters.
A, open process
1 in the closed position, the valve ball [wiki] [/wiki] pressure action,pressed on the seat.
2 when the handwheel counterclockwise, the stem is the reverse movement, the bottom of the angular plane to disengage the ball seat.
3 stem continues to improve, and with the spiral groove of the guide pins stem interactions, the ball began to spin without friction.
4 up to the fully open position, the valve stem to the limit position,rotate the sphere to the fully open position.
B, the closing process
1 off, rotate the hand wheel clockwise, the stem began to decline and to leave the seat to rotate a sphere.
2 continue rotating the handwheel, the stem is embedded in thespiral groove of the guide pin, the stem and ball rotating 90 °.
The 3 is closed, the sphere has been no contact with the valve seatunder the condition of 90 DEG rotation.
4 hand rotation of the final laps, the stem at the bottom of theangular plane mechanical wedge pressure sphere, so closely pressed on the seat, to be completely sealed.
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