In the last three RLD Monday Morning Minutes, I made the case for a pre-pressurized tank in variable-speed pressure booster systems. Today, let’s look at …
Hydropneumatic Tanks for Variable-Speed Pressure Boosters, Part 3
In the last RLD Monday Morning Minute I described the pre-pressurized tank sizing for constant-speed booster systems. There are those who say, “My pressure booster system is …
Hydropneumatic Tanks for Variable-Speed Pressure Boosters, Part 2
In last week’s RLD Monday Morning Minute, I described a brief history of pressure-boosting systems and the introduction of the pre-pressurized tank. This week we continue …
Hydro-pneumatic Tanks for Variable Speed Pressure Boosters, Part 1
Possibly only engineers, like myself, can appreciate controversy in plumbing system design. The use and sizing of storage tanks in variable speed pressure boosters is …
Can I change my Vacuum Condensate Pump to a Simple condensate Pump? (Part 3)
When you use the word vacuum with most people, they think of sucking something up like a vacuum cleaner does. There are times that vacuum condensate systems were used to lift or “suck up” the condensate from a lower level. Today, we will examine the use of vacuum condensate pumps to lift condensate from a low return.
Can I change my Vacuum Condensate Pump to a Simple condensate Pump? (Part 2)
We began a series about vacuum condensate units and introduced one of their uses: the reduction of time to bring a building up to temperature …
Can I Change My Vacuum Condensate Pump to a Simple Condensate Pump? (Part 1)
Every heating season we get, at least, a half dozen calls with the question above, which is the subject of today’s R. L. Deppmann Monday Morning Minute. Vacuum condensate transfer pumps exist in many older steam heating systems. There were many reasons contractors and engineers used these pumps but most of the systems fall into three categories: time control, temperature control, and condensate lift.
B&G Triple Duty® valves or Metraflex check valves on your variable speed hydronic pumps (Revisited)
Our Monday Morning Minute (MMM) in September outlined the value and need of using Bell and Gossett triple duty valves in variable speed pumping applications. The use of the triple duty valve ports will make it easier to determine the maximum speed to set in the drive.
Minimum Flow in Variable Speed Pumps for HVAC and Building Plumbing Systems
Every week a question comes in to R. L. Deppmann about the minimum flow rate through pumps. In hydronic heating and cooling systems, it is …
Triple Duty® valves on your variable speed hydronic pumps
Bell and Gossett triple duty valves have, for decades, provided a cost effective way to assure there is a non slam check, balance, and shutoff valve on the discharge of your hydronic pump installation. These valves are used to throttle excess head and, therefore, should not be oversized. B&G offers these installation friendly valves in traditional full port model (3DS-S) and in a reduced port version (3DS-B)