You specified the best, Bell and Gossett. The contractor purchased the best, Bell and Gossett. Now how do you make sure it is operating the best! Once a B&G base mounted centrifugal pump is installed in your hydronic system we recommend it be commissioned with a specified check, test, and start-up service. This service, when performed by
Accessorize Your Plate Exchangers (Part 2)
Last week the Monday Morning Minutes suggested a strainer accessory for your plate exchanger applications. (Click on past articles to review it) Today we look at three additional options or accessories. INSULATION KITS: On new construction building projects there is normally an insulation sub contractor. There are industrial projects or retrofits where the availability of an insulation
Gasketed Plate and Frame Accessories
Reminder – ITT can provide accessory items with our GPHE heat exchangers. These include Port Strainers, Insulation Kits, Automatic Back-Flush Systems and Drip Pans. Any of these can add value to our product and assist in differentiating against the competition. Earlier this year, you received published pricing and technical information for Port Strainers and Insulation Kits.
Double Wall Plate Heat Exchangers
The Monday Morning Minutes of the last two weeks introduced some differences between plate heat exchangers. Two of the products featured were the double wall plate & frame and double wall brazed plate heat exchangers. We have received many calls regarding these models and Michigan and Ohio plumbing codes. The plumbing code is very specific in its
Not All Plate Heat Exchangers Are Gasketed!
Last week we introduced three varieties of Bell and Gossett gasketed plate heat exchangers. Today, we look at three types of brazed plate heat exchangers. A brazed plate exchanger is a plate exchanger without gaskets or rolled joints. The plates are brazed so there are no elastomers. Brazed heat exchangers are generally available in smaller sizes than
Not All Plate Heat Exchangers Are Alike!
Often times when designing a HVAC or Industrial Process system we use unfired heat exchangers. Our choices vary between shell and tube design or plate/frame design. The next few Monday Morning Minutes will offer a glimpse of the variety of plate type exchangers. Today let’s look at three gasketed plate heat exchanger designs and the application of
Centrifugal Pumps – “Clipping the Tips”
R. L. Deppmann regularly receives questions when a field problem pops up. Here is an example call from an industrial user with a pump issue. There is an existing Bell and Gossett model 1510-5BC with a capacity of 1000 GPM at 60 foot head using a 25 HP, 1750 RPM motor and a 9” cut impeller.
Centrifugal Pump Selection Specifying Future Conditions
In the last R. L. Deppmann Monday Morning Minutes, we suggested a specification that would allow a future impeller change as a means of adding some safety factor to the pump provided on your project. What happens if you want to select a pump with a present and future condition? Here is a good pump selection for a capacity of 2700 GPM at 100 foot head using a 100 HP 1750 RPM motor.
Constant Speed Pumps and Maximum Impeller Concerns
How many times have you, as an engineer, looked at a number of curves and passed up a few because you did not like something about the selection on that curve? In the last R. L. Deppmann Monday Morning Minute we looked at end of curve selections. Today we examine pump selections near the top of the…
Centrifugal Pump Selection Maximum Point on the Curve
How many times have you, as an engineer, looked at a number of curves and passed up a few because you did not like something about the selection point on that curve? In the December 6, 2010 R. L. Deppmann Monday Morning Minutes, we look at how to specify and schedule pumps to limit the bidders to to specific pump curve characteristics.