McDonnell & Miller announces new general purpose flow switches, the Series FS250. The patent pending design has the same switching mechanism in two models - FS251 (NEMA-1) and FS254 (NEMA-4). Both switch models carry ASME Section IV Boiler Ratings of 250ºF and 160 psig and use EPDM O-rings to provide the liquid-to-air seal. The switches were field tested for over 18 months in numerous applications, and laboratory tested at rated pressure and temperature achieving over 240,000 cycles with no failures. These flow switches are offered with an industry first five year warranty.

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When your equipment, such as a heat exchanger, carries an ARI certification, rest assure that it will meet the required performance.

ARI Standard 400 certified equipment provides a common method among different manufacturers for evaluating the thermal performance and pressure drops of liquid to liquid heat exchangers. By requiring ARI Standard 400 certification, buyers and users know that products are rated on a uniform basis and can properly make selections for specific applications. Certification is granted only to heat exchangers that, when tested, meet or exceed the manufacturers published thermal performance rating. An ARI Standard 400 certified or rated Plate and Frame heat exchanger ensures the HVAC system is as energy efficient as possible, potentially resulting in energy cost savings.

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Expand your business with wastewater pump sales. Bell & Gossett is proud to offer a full line of Residential and Commercial submersible wastewater pumps from ¼ HP, 1¼" discharge thru 40 HP, 4" discharge and all related controls, fittings and accessories. These products have applications across all aspects of the plumbing industry.
Controls are available from stock or custom built with very competitive lead times, prices and features. See all the offering from the small sump pump to completely fabricated duplex lift stations ready to install at http://www.bellgossett.com/productPages/Wastewater-Pumps-Intro.asp

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Last month we discussed how the combination of B&G circulators, controls and Monoflo® fittings helped increase the popularity of hydronic heating. Now a little about the Monoflo...

Mr. Kehm of Stevens Root Manufacturing Company located in Chicago invented a small fitting called a Forced Flow Shunt. The shunt, along with a circulator, made it possible to use much smaller pipe sizes for hot water systems. He was issued a patent in 1934. He sold the shunts and his own circulator principally around the Chicago area but had a few agents around the country. He experienced extreme difficulties with his pump design and entered into an agreement with B&G in 1935. B&G would manufacture and sell the Forced Flow Shunts with a royalty paid to Mr. Kehm and Stevens Root Manufacturing would be sold a brand named version of the B&G Booster. In 1940, B&G renamed the shunt the Monoflo fitting and received a trademark.