3-way valve & support pump
3-way valve & support pump
(OP)
Hi,
We have a building with 5 AHU,each AHU has 2-way valve for water flow control and two of them have a supporting pump.Now we realy need to change those 2-way vavle with 3-way valve.So what about the supporting pump can we fix it befor or after 3-way valve or use a main supporting pump?
What is the 3-way valve's advantages against 2-way valve?
We have a building with 5 AHU,each AHU has 2-way valve for water flow control and two of them have a supporting pump.Now we realy need to change those 2-way vavle with 3-way valve.So what about the supporting pump can we fix it befor or after 3-way valve or use a main supporting pump?
What is the 3-way valve's advantages against 2-way valve?





RE: 3-way valve & support pump
But 2-way valves are used in variablr flow applications and 3- way in constant flow. One of the reasons for design a variable flow system is to save energy in water pumping.
If you have 3 and 2 way vlvs mix in the same system it will work but you will not save all that you can save. 3w vlvs by-pass the water not needed for cooling, thus the pump will always have to move this water around.
You might want to see queng tread "VFD application"
Good luck!!!
Energia
RE: 3-way valve & support pump
A couple of questions:
Why do you need to change the 2-way valves with 3-way?
What was the purpose of the pumps?
---KenRad