The double check valve assembly consists of two independently operated spring loaded cam-check valves, required test cocks, and optional inlet and outlet resilient wedge shut-off valves. Each cam check is internally loaded and provides a positive drip tight closure against the reverse flow of liquid caused by backsiphonage or backpressure. The modular cam-check includes a stainless steel spring and cam-arm, rubber faced disc and a replaceable seat.
Double Coned Reamers consist of tool shank and a detachable reamer head, which provide the shank at one end engaged by the spindle of a machine tool and at the other with a sleeve defining a conical socket. Its head has an integral conical butt for engagement in the shank socket. Flute placement, relief and angle are designed to give the best results on all types of barrel steel. The long forcing cone created to give optimum results in any length chamber. The hex-drive permits use of a socket and T-handle when tap handles will not operate. These are also useful in removing gutta-percha in preparation for creating post space.