Abstract: Methods and devices for detecting and indicating corrosion and rate of progression of corrosion in piping such as piping having non-metallic liners.

Abstract: A wave washer includes an annular member surrounding an opening arranged to receive a pipe axially therethrough, the annular member having a plurality circumferentially spaced holes formed therein. The wave washer also has associated with it at least one spring portion protruding axially from the annular member between two of the holes. The wave washer can be used in a pipe joint to join a first pipe and a second pipe, each having a pipe end having a pipe flange and an adjacent sealing flange. The wave washer is positioned against an inner side of the pipe flange of the first pipe. The wave washer and the flanges of the first and second pipes are fastened based on the deflection of the annular member of the wave washer.

Abstract: A tubing includes an inner liner composed of one or more fluoropolymers, the inner liner being corrugated to define a trough, and having a wire disposed in said trough. The tubing further includes an outer layer, permanently secured to an exterior of the inner liner and covering said wire.

Abstract: A locking tubing system includes a length of tubing lying in any geometric complexity including a substantially straight line and a first fitting body having a securing member rotationally locked thereto. The first fitting body is affixed to one end of the length of tubing. The system also includes a first nut having a plurality of openings in cooperative relation to engage the securing member, a second fitting body having a securing member rotationally locked thereto, the second fitting body is affixed to the other end of the length of tubing and a second nut having a plurality of openings in cooperative relation to engage the securing member. The first nut and the second nut are threaded onto corresponding mated fittings, each securing member being engaged with at least one of the openings of the respective nuts thereby locking each of the nuts to the respective fitting body.

Abstract: A locking tubing system includes a length of tubing lying in any geometric complexity including a substantially straight line and a first fitting body having a securing member rotationally locked thereto. The first fitting body is affixed to one end of the length of tubing. The system also includes a first nut having a plurality of openings in cooperative relation to engage the securing member, a second fitting body having a securing member rotationally locked thereto, the second fitting body is affixed to the other end of the length of tubing and a second nut having a plurality of openings in cooperative relation to engage the securing member. The first nut and the second nut are threaded onto corresponding mated fittings, each securing member being engaged with at least one of the openings of the respective nuts thereby locking each of the nuts to the respective fitting body.

Abstract: A fluid coupling capable of indicating proper tightening includes a fitting body having a flared end with a back side. The fitting body also includes an indicator spaced a predetermined distance away from the back side. A threaded nut is positioned around the fitting body adjacent the flared end and includes a back end and a shoulder portion spaced away a predetermined distance therefrom. The shoulder portion is concentrically aligned with the back side of the flared end. The fluid fitting also includes a belleville washer(s) positioned around the fitting body adjacent the back side of the flared end, which is (are) compressed upon threading and torquing of the nut onto the threaded end of a male fitting. When a predetermined amount of torque has been applied to the nut, the indicator is visible adjacent the back end of the nut.

Abstract: A locking tubing system includes a length of tubing lying in any geometric complexity including a substantially straight line and a first fitting body having a securing member rotationally locked thereto. The first fitting body is affixed to one end of the length of tubing. The system also includes a first nut having a plurality of openings in cooperative relation to engage the securing member, a second fitting body having a securing member rotationally locked thereto, the second fitting body is affixed to the other end of the length of tubing and a second nut having a plurality of openings in cooperative relation to engage the securing member. The first nut and the second nut are threaded onto corresponding mated fittings, each securing member being engaged with at least one of the openings of the respective nuts thereby locking each of the nuts to the respective fitting body.