Featured Bell & Gossett SteamTeam

Specifying Tips: Vacuum Return Condensate Units »

Volume 4/ Issue 2/ July 2017 Should you replace your vacuum return condensate system with a standard condensate return unit? Before you decide, let’s look at what happens when a steam heating system starts up — a cycle that can happen many times a day, depending on the weather. At startup on a two-pipe steam

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All Bell & Gossett SteamTeam

When a bucket trap is the wrong choice »

Volume 4/ Issue 2/ July 2017 Although inverted bucket traps have a long history in the steam business and can stand up to demanding application, they’re not always the best choice — especially in a system with fluctuating loads. Steam traps of any design must be able to perform these three functions: 1. Vent air

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McDonnell & Miller Frequently Asked Questions »

Volume 4/ Issue 1/ May 2017 1. Q.  How do I maintain Low Water Cut-Offs? Find detailed maintenance instructions for McDonnell & Miller low water cut-offs in the installation and operating instruction manual (IOM) that ships with the product. You can also get the IOMs online at www.mcdonnellmiller.com. Here’s a brief summary of required maintenance.

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Cast Iron or Steel? The Receiver is tailored for the application. »

Volume 4/ Issue 1/ May 2017 The “receiver” or “tank” in a Domestic® Pump steam condensate handling unit should be of the proper material and size for the application, following industry best practices and ASHRAE recommendations. Condensate collection tanks generally come in two types of material – cast iron or steel. Both meet the highest

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Should I insulate my condensate units’ receiver? »

Volume 3/ Issue 3/ August 2016 This issue is not addressed in Xylem Domestic Pump and Hoffman Pump product manuals, factory recommendations or Little Red School House steam system application and sizing guides. Some installations require insulation for safety. Otherwise, it’s a matter of choice based on system design and your understanding of the strengths,

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Hoffman Specialty PRV Troubleshooting »

Volume 3/ Issue 3/ August 2016 Q.  How do I test a spring pilot? A.  The easiest way to test a pilot operated valve is to disconnect the pilot line and observe the pilot’s operation. Keep in mind you are handling steam. Use proper safety precautions. When you turn the adjusting nuts in, the pilot

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Do I need a high temperature seal for my condensate pump? »

Volume 3/ Issue 2/ May 2016 Rapid or repeating pump failures often lead clients to ask if a high temperature seal is needed. But it’s more likely there are NPSH problems. Keep in mind that the maximum temperature that can be reached in the receiver is 212ºF. Domestic Pump condensate and boiler feed receivers are

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Pressure testing Series 2000 valves »

Volume 3/ Issue 2/ May 2016 A customer recently asked our recommendation on testing the regulator valve and piping between the PRV station shutoff valves. “I am required to hydro test to 150 PSI on the high pressure and 60 PSI on the low pressure steam,” he wrote. “Could these test pressures damage the regulator

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Sizing boiler feed units vs. condensate return units »

Volume 3/ Issue 1/ March 2016 We’ve previously discussed how to size condensate return units. Sizing a boiler feed unit requires similar information but is affected by differences in design and operation. Condensate return units are generally smaller, fitting their function of collecting steam condensate and pumping it back into the system before too much

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Two pressure-reducing valves (PRVs) in series (Two-step pressure reduction) »

Volume 3/ Issue 1/ March 2016 Application Reduce a steady or varying high inlet pressure to a constant adjustable low delivery pressure. General Two pressure-reducing valves in series are generally used when the total reduction in pressure is greater than that attainable with one valve. Here’s the rule of thumb: Use a two-step reduction whenever

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