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Petroleum-based pipe dope is not intended for use on threaded PVC, CPVC or ABS pipe and fittings since it will deteriorate the plastic. Builders in the US are expected to use thread compounds that meet ASTM F2331 - Standard Test Method for Determining Chemical Compatibility of Thread Sealants with Thermoplastic Threaded Pipe and Fittings Materials or thread seal tape on PVC, CPVC and ABS threads.
Dope, a technical expression for the solution of polymers from which fibers are spun; see Wet processing engineering; Peg dope, a substance used to coat the bearing surfaces of the tuning pegs of string instruments; Pipe dope, a sealant applied to pipe threads to ensure a leakproof and pressure-tight seal
A close nipple can only be unscrewed by gripping one threaded end with a pipe wrench which will damage the threads and necessitate replacing the nipple, or by using a specialty tool known as a nipple wrench (or known as an internal pipe wrench) which grips the inside of the pipe, leaving the threads undamaged. When the ends are of two different ...
A compression fitting 15 mm isolating valve. A compression fitting is a fitting used in plumbing and electrical conduit systems to join two tubes or thin-walled pipes together. . In instances where two pipes made of dissimilar materials are to be joined (most commonly PVC and copper), the fittings will be made of one or more compatible materials appropriate for the connect
"Peg dope" (also peg paste, peg stick, peg compound) is a substance used to coat the bearing surfaces [1] of the tapered tuning pegs of string instruments (mainly violins, violas, cellos, viols and lutes). Manufactured varieties are generally sold in either a small stick (resembling lipstick), a block, or as a liquid in a bottle.
Wiped joints were used for centuries to install water plumbing and similar joints can be seen in Roman plumbing. [3] As the wiping technique allowed a great deal of on-site flexibility for the style and dimensions of the work produced, this meant that plumbers needed few parts other than pipe, lead sheet and solder.
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Backing off pipe, is an industry term which means unscrewing the pipe at a desired depth downhole. Inside Back Off or String Shot. Once the free point of a stuck pipe string is determined, the stringshot back-off service can be used to remove the free portion from the well. The string-shot is a metal rod wrapped in explosive primer cord.