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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.
One is a new sort of steam pump, essentially two devices like de Caus', but attached to a single boiler. A key invention is the addition of cooling around the containers to force the steam to condense. This produces a partial vacuum inside the chambers, which is used to draw a volume of water into the containers through a pipe, thus forming a pump.
1 + 1 ⁄ 2-inch hose with 1 + 1 ⁄ 2-11.5NPSH ASME threads instead of NFPA threads in the U.S. and Canada, without any regulation specifying its use, and contrary to NFPA 1963. [9] This is perhaps a direct result of the 1918 War Industries Board recommendation noted above, combined with 1 + 1 ⁄ 2 -inch 1.5-9 NH NFPA couplings not being ...
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
Expansion joints on a steam line that have been destroyed by steam hammer. Steam hammer can occur in steam systems when some of the steam condenses into water in a horizontal section of the piping. The steam forcing the liquid water along the pipe forms a "slug" which impacts a valve of pipe fitting, creating a loud hammering noise and high ...
…at a velocity of 15 miles an hour [24 km/h] the water is lifted 7 + 1 ⁄ 2 ft. [2.3 m], this was exactly the result attained in practice by the apparatus; at this speed the water was raised to the top of the delivery pipe (7 + 1 ⁄ 2 ft. [2.3 m]), and was there maintained without running over into the tender whilst the scoop was in action ...
They were originally developed to remove deposits which could obstruct or retard flow through a pipeline (Fig. 1). Today pigs are used during all phases in the life of a pipeline for many different reasons. Fig. 1 Cleaning pig in a pipeline Fig. 2 Classification of pipeline pigs. Pigs used today can be divided into three categories (Fig. 2):
It had two cylinders – one 21-inch (0.53 m) diameter with 6-foot (1.8 m) stroke and one 27-inch (0.69 m) diameter with 8-foot (2.4 m) stroke – placed alongside each other at one end of the beam. The early engines showed little performance gain: the steam pressure was too low, interconnecting pipes were of small diameter and the condenser ...
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