What is MJ pipe?


What is MJ pipe?

MJ stands for Mechanical Joint. It is a type of compression joint designed for underground connection for pipe, valves and fittings.

What is a mj pipe fitting?

The standard defines “mechanical joint” as: “a joint in which a positive seal is achieved when a gasket is compressed by means of a mechanical device.” A mechanical-joint (MJ) connection is the most common method used to join PVC pipe to a valve or an iron fitting.

What diameter is MJ pipe available?

Standard Dimensions

Size (in.) Dimensions in Inches
A Plain End J
4 4.80 7.50
6 6.90 9.50
8 9.05 11.75

What is AWWA C153?

Back to AWWA C153-11 Ductile-Iron Compact Fittings. This standard describes 3-in. through 64-in. (80-mm through 1,600-mm) ductile-iron compact fittings to be used with ductile-iron pipe or pipe made of other materials with similar outside diameters for conveying potable water, wastewater and reclaimed water.

What is AWWA c111?

Item Details: This standard describes rubber-gasket joints of the following types for ductileiron pressure pipe and ductile-iron and gray-iron fittings, valves, hydrants, and other appurtenances for potable water, raw water, nonaggressive wastewater, and reclaimed water supply service.

What is restrained joint ductile-iron pipe?

A restrained joint is a special type of push-on or mechanical joint that is designed to provide longitudinal restraint. Restrained joint systems function in a manner similar to thrust blocks, insofar as the reaction of the entire restrained unit of piping with soil balances the thrust force.

Are MJ fittings restrained?

The restraint is a split serrated ring with thrust rods that rod back to the fitting. The Restraint is rated for the full pressure of C900 PVC pipe. Available in sizes 4 inch through 12 inch.

What is the difference between cast iron and ductile iron pipe?

Ductile iron can be bent without breaking, whereas cast iron is brittle and breaks when bent. As ductile iron can be bent, it can be made into different shapes and forms. But one cannot make out different shapes and forms using cast iron.

What is a Megalug?

The Series 1100 MEGALUG® Mechanical Joint Restraints effectively and economically restrain Ductile Iron Pipe (DIP) to mechanical joints above or below ground, for practically any application including valves, hydrants, and pipe.