Session #3: Advancements in Watermain PVF Connections
Overview of OTJ Session #3:
Learn more about advancements in watermain pipe, valve, and fitting connections. The Mechanical Joint (MJ) connection was first introduced and patented in 1929. It has been used to connect watermain pipe, valves and fittings (PVF) for decades. Three major PVF connection innovation breakthroughs have occurred over the years. One innovation milestone was the development of a wide-ranging outer diameter connection. This eliminated the need to source size specific joint connection products and offered installers a convenient “one-size fits-all” solution. Another innovation milestone was to connect PVF joints using one single top-facing bolt and nut. Eliminating the multitude of nuts and bolts greatly reduces the odds of an installation error. The most compelling PVF joint innovation milestone was the introduction of an integral restraint system. Having a factory installed joint restraint device decreases the number of parts used in the field, which simplifies and speeds up the installation process.
At the completion of this one-hour OJT session, participants will be able to demonstrate the following:
- How does increasing the material surface area that an applied load acts upon affect material stress?
- What does Hydraulic Assist refer to with regard to PVF restraint?
- Do all PVF joint restraint systems make symmetrical contact around the circumference of the pipe?
- What pressure capacity test does AWWA C219 require for Bolted Sleeve couplings?
- Describe the microstructure and tensile strength difference of ductile iron and cast grey iron?
Scott Mills of Integrity Pipeline Products
Our workshop facilitator is Scott Mills a licensed professional engineer at Integrity Pipeline Products, where he helps represent all of their linear infrastructure products across Canada.. Having held positions with prominent Waterworks companies, such as: IPEX, Mueller and Wolseley, Scott has developed an in-depth knowledge of many buried infrastructure components.