A shutoff valve for controlling waterflow between a water source and a waterflow pipe comprising:
- a straight first tubular housing including an internally threaded water inlet at one end, an internally threaded water outlet at other end and a neck means projected upward from a periphery having a positioning means extended outward from a periphery thereof;
- a first valve ball movably disposed into said housing and having a central bore transversely formed in alignment with said water inlet and outlet and a rectangular slot formed in an upper periphery and perpendicular to said central bore;
- a swivel knob for operating said valve ball, having a shank rotatably disposed into said neck means and engaged with said valve ball, said shank having a rectangular protrusion engageable with the rectangular slot of said valve ball projected downward from a radial line of free end of said shank and a pair of sealing rings superposedly secured to an outer periphery of said shank;
- a first flexible ring secured to a shoulder inside said housing adjacent said water inlet having a spherical surface engageable with said valve ball;
- a nipple means axially engaged into said water outlet of said housing and comprising an inward flange for forming a second flexible ring in a forward end having a spherical surface engageable with said valve ball, an outward flange extended outward from a medial periphery, a threaded outer periphery adjacent forward end engageable with said internally threaded water outlet, an annular groove formed around a periphery abutting the a forward side of said outward flange for disposition of a sealing ring therein, a threaded outlet periphery adjacent a rearward end abutting said outward flange and a tapered surface formed in said rearward end thereof;
- a retaining ring for retaining one end of a waterflow pipe having central bore in alignment with the axis of said nipple means and a tapered surface formed on an outer periphery adjacent each end thereof engageable with the tapered surface of said nipple means;
- a nut having a threaded inner periphery engageable with said threaded outer periphery adjacent the rearward end of said nipple means and a tapered surface engageable with the tapered surface of said retaining ring formed on an inner periphery adjacent a bottom of said nut;
- whereby, said valve ball being operated by said swivel knob can selectively control the water flow from a water source to a waterflow pipe.