What is a restrained joint?
What is a restrained joint?
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.
How do mechanical joints work?
The mechanical joint seals by the force of the t-bolts pushing the gland which moves and compresses the gasket. With the gasket being trapped in a confined volume and the gland pushing from one side, the gasket experiences an increase in internal pressure.
What is C900 pipe?
C900 is the AWWA standard for cast-iron-pipe-equivalent outside diameter polyvinyl chloride (PVC) pressure pipe and fabricated fittings for potable water transmission and distribution, covering nominal pipe sizes from 4 inches through 12 inches.
What is MJ pipe?
The Mechanical Joint (MJ) Coupled Joint offers a method of providing joint restraint with a standard mechanical joint socket of a pipe, fitting, valve or other product.
What is a Tyton joint?
TYTON JOINT® is U.S. Pipe’s trademark product for ductile iron pipe with a push-on type connection. Simplicity, sturdiness and water-tightness are built into the system by design. TYTON Joint Pipe is available with a variety of coatings and linings, including metallic zinc coating.
Are mechanical joints restrained?
How does a megalug work on a pipe?
The wedge style MEGALUG design reacts to the amount of force acting on the joint. When each wedge is set, the wedge teeth penetrate the pipe’s outer surface, and the wedge does not move on the pipe. There is very little change in this interface until the wedge movement begins inside the pocket of the main casting.
Which is megalug series for pipe joint restraint?
Mechanical joint restraint for ductile Iron pipe shall be Megalug Series 1100 produced by EBAA Iron Inc. or approved equal. MEGA-BOND® Restraint Coating System All wedge assemblies and related parts shall be processed through a phosphate wash, rinse and drying operation prior to coating application.
When did the EBAA use the megalug Series 1100?
Since 1984, engineers and contractors designing and installing water and wastewater pipelines and systems have come to rely on the EBAA Series 1100 MEGALUG Mechanical Joint Restraint as the “Product of Preference” for effectively and economically restraining ductile iron pipe connections above or below ground.
What is the minimum water pressure rating for megalug?
Ratings are for water pressure and must include a minimum safety factor of 2 to 1 in all sizes. Material Gland body, wedges and wedge actuating components shall be cast from grade 65- 45-12 ductile iron material in accordance with ASTM A536.
The wedge style MEGALUG design reacts to the amount of force acting on the joint. When each wedge is set, the wedge teeth penetrate the pipe’s outer surface, and the wedge does not move on the pipe. There is very little change in this interface until the wedge movement begins inside the pocket of the main casting.
Mechanical joint restraint for ductile Iron pipe shall be Megalug Series 1100 produced by EBAA Iron Inc. or approved equal. MEGA-BOND® Restraint Coating System All wedge assemblies and related parts shall be processed through a phosphate wash, rinse and drying operation prior to coating application.
Since 1984, engineers and contractors designing and installing water and wastewater pipelines and systems have come to rely on the EBAA Series 1100 MEGALUG Mechanical Joint Restraint as the “Product of Preference” for effectively and economically restraining ductile iron pipe connections above or below ground.
Can a series 1100 megalug be used with grey iron pipe?
The Series 1100 MEGALUG restraint may be used with grey iron pipe having standardized cast iron O.D. per AWWA C150 and C151, and with pit cast Classes “A” and “B” without modification. Use of the Series 1100 with pit cast grey iron Classes “C” and “D” will require over sizing the MEGALUG.