Established as a foundry of brass fixtures in 1851, Oventrop has since evolved into a global manufacturer of balancing valves and thermostatic radiator valves for the building industries. The family-owned company is now expanding into the American market, and Plumbing & Mechanical Chief Editor Nicole Krawcke had the chance to chat with Nicola Schannath, CEO of Oventrop-US, about the company’s plans in the United States and current PHCP-PVF market trends.
In March 2010, a nine-month-old boy rolled off his sister’s bed in Jersey City, New Jersey, and got stuck between the bed and a cast-iron, steam radiator that was as hot as it’s supposed to be. The radiator delivered third-degree burns to the infant and left him with permanent scars.
Over the last few years, I’ve written several columns describing how air-to-water heat pumps can provide heating, cooling and domestic hot water for homes. Many of the systems involve buffer tanks to help stabilize heat transfer from the heat pump to a zoned distribution system. Those tanks are especially important with a single-speed heat pump supplying a highly zoned distribution system. Without the thermal mass they provide, the single-speed heat pump would undergo frequent on/off cycling that ultimately leads to premature failure of components, such as compressor contactors or start capacitors. Short cycling also lowers the overall efficiency of the heat pump.
A technician encounters a system installed in the 1980s when radiant floor heating was relatively new in North America. The layout of that system is shown in Figure 1.
Heat pumps offer attractive solutions to energy-efficient heating and cooling, and the market is growing. According to a November 2021 report from the International Energy Agency (IEA), nearly 180 million heat pumps were used for heating in 2020, as the global stock increased nearly 10% per year over the past five years.
Whether you’re a new pro entering the industry or a seasoned plumber in need of a quick refresher, this article covers best practices when installing or replacing a new toilet flange; best practices when repairing a broken flange; and finally, toilet flange types and options.