A needle valve including a deformable seal positioned between the distal end of the needle and a hard, mechanical seat between the needle and the valve housing. The deformable seal is able to seal around the movable needle but is protected from serious deformation by the hard mechanical seat that is located so as to prevent the needle from entering the deformable seat beyond a predetermined amount.Needle & Gauge Valves Thus the deformable seal does not extrude due to the entrance of the needle and wear is reduced. Forged Steel ValvesA needle valve for controlling the flow of a fluid, said needle valve comprising a valve housing having an inlet and an outlet and defining a passageway therebetween for the flow of fluid between said inlet and said outlet, a hard seat formed in said housing and within said passageway,CHECK VALVES a needle having a tapered distal end, an annular, frustro-conical shaped deformable seal affixed within said valve housing and retained in position solely by a press fit within said valve housing, said deformable seal surrounding said tapered distal end of said needle and being tapered complementary to the taper of said distal end of said needle, said needle having a hard tapered surface formed therein proximal to said tapered distal end, said needle being movable between an open position where fluid passes through said passageway and a closed position where said hard seat formed in said housing abuts against said hard tapered surface formed on said needle to close said passageway, said movement intermediate said open and closed positions causing said tapered distal end to move away from and toward said deformable seal to meter the flow of fluid passing through said passageway, said deformable seal sealing against said tapered distal end of said needle when said needle is in the closed position, said deformable seal located such that movement of said needle further toward said deformable seal is prevented by the abutment of said hard tapered surface of said needle against said hard seat when said needle is in said closed position whereby deformation of said deformable seal by said tapered distal end is controlled to a predetermined amount.

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