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Home » valves

Articles Tagged with ''valves''

John Siegenthaler: How to use a variable-speed circulator for boiler protection

Any boiler can become a condensing boiler under the right conditions.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
January 4, 2019

All boilers that burn hydrocarbon fuels (natural gas, propane, oil, wood) produce water vapor as a byproduct of combustion.


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JV-Pettinaroli Acquisition_Press-Release

Italian manufacturer Fratelli Pettinaroli acquires Jomar Group

The full acquisition was finalized this summer and follows a 50% acquisition in 2001.
December 12, 2018

With 11 global locations, this acquisition allows Pettinaroli to expand their North American footprint. 


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The Glitch

The Glitch and Fix: Sometimes warm, sometimes not

The Glitch and Fix: December 2018
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
December 7, 2018

The Glitch: Eager to keep up with this new technology, an installer decides to install a hydraulic separator between a boiler and distribution system as shown below.


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000 DEC18_Cov_900x550

The 2019 B.I.G. Book

December 3, 2018

The 2019 Brand Information Guide is PM’s annual listing of manufacturers and products.


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Webstone Thermostatic Mixing Valve line

Webstone Thermostatic Mixing Valve line

November 22, 2018

Webstone, a brand of NIBCO, has expanded its Thermostatic Mixing Valve (TMV) line to include a new ultra-compact model.


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Sloan CX Flushometer

Sloan CX Flushometer

October 18, 2018

Sloan recently launched its CX Flushometer designed to suit the needs of architects, designers, building owners, contractors and engineers.


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Danfoss ESBE ARC/ARD actuators

Danfoss ESBE ARC/ARD actuators

October 18, 2018

The new ESBE ARC/ARD series of high-torque, low-voltage actuators from Danfoss provide 90 degrees of operating range.


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Keeney Mfg. Co. No Crimp PEX valves

Keeney Mfg. Co. No Crimp PEX valves

October 18, 2018

The Keeney Mfg. Co.’s No Crimp PEX valves are push-on quarter-turn valves.


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Bonomi Series S250 in-line check valves

Bonomi Series S250 in-line check valves

October 17, 2018

Bonomi’s new Series S250 in-line check valves feature a cold-formed 316 stainless steel body.


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RJ0918 Check Valves Feat photo

Design and use of check valves

Check valves protect both the suction and discharge sides of pumps, in addition to preventing backflow of possibly contaminated water.
Nathan Lazenga
September 29, 2018

Check valves are ubiquitous in all sorts of piping systems. Although they may be familiar to plumbing and mechanical contractors, the more than half dozen different types of check valves are designed for different functions and types of service. Contractors need to take care to select the correct check valves for the piping systems they are designing and installing.


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