douggiestyle
New member
need a pressure regulator for the output of my ro/di unit.
any help locating one would be greatly appreciated.
pre thanks
doug
any help locating one would be greatly appreciated.
pre thanks
doug
pressure regulator
- Thread starter douggiestyle
- Start date
BeanAnimal
Premium Member
AirWaterIce has them. ( I assume your talking about a flow regulator not a pressure regulator?)
douggiestyle
New member
jeez you got me all excited.
unfortunately a pressure regulator.
preferably adjustable.
and cheap!
i asking for alot, i guess.
i wish to split my kalk reactors output into to valves. a pressure regulator would allow me to limit the presure going into the kalk reactor. its this or a third valve going in that shuts off before either of the other two.
anyone know how to put together an adjustable time delay for 12vdc? ooo maybe just a capacitor. should i create a new thread?
unfortunately a pressure regulator.
preferably adjustable.
and cheap!
i asking for alot, i guess.
i wish to split my kalk reactors output into to valves. a pressure regulator would allow me to limit the presure going into the kalk reactor. its this or a third valve going in that shuts off before either of the other two.
anyone know how to put together an adjustable time delay for 12vdc? ooo maybe just a capacitor. should i create a new thread?
Last edited:
jdieck
New member
If you can tell me more about what are you trying to do I might be able to help. So far I understand you want to split the ouput of the kalk reactor into two. Are you trying to feed two different tanks? If that so IMO the best option will be to have a reservoir for the RO/DI water activated by a float that opens a solenoid when the water level is about 1/4 and off when is full. This will keep the impurities at the lowest by having the RO/DI unit turn on and off as little times as possible.
Then from the reservoir set a line to the reactor's input and then split the reactors output into two lines each with its own doser pump. Traditionally the doser is installed at the input but with the right kind of tubing (Tygon or similar) the pumps shall have no problem handling the Kalk. Because the dosers are positive displacement they can suction the water not only push it, in addition they keep the line closed when not in operation so they both can pump independently of each other or at the same time with no problem.
The cons? You need some more $$
By the way for more clarification... although there are pressure regulators installing one at the output of the RO/DI means that close to the full tap pressure will be at the outlet of the membrane this will create impurities diffusion into the product line and will reduce the RO/DI capacity significantly.
Then from the reservoir set a line to the reactor's input and then split the reactors output into two lines each with its own doser pump. Traditionally the doser is installed at the input but with the right kind of tubing (Tygon or similar) the pumps shall have no problem handling the Kalk. Because the dosers are positive displacement they can suction the water not only push it, in addition they keep the line closed when not in operation so they both can pump independently of each other or at the same time with no problem.
The cons? You need some more $$
By the way for more clarification... although there are pressure regulators installing one at the output of the RO/DI means that close to the full tap pressure will be at the outlet of the membrane this will create impurities diffusion into the product line and will reduce the RO/DI capacity significantly.
douggiestyle
New member
hey thanks, $$ is an impotant issue.
i am familiar with your recomended setup, pros and cons.
you are right about the membrane diffusing impurities. i have in fact measured it. in apx two hours of no flow but at full household pressure. the membrane releases enough impurities to increase the tds by 3 ppm (resolution of 1 ppm) in the water flowing to the di unit. a reading of this water during full flow is 1 ppm. the water exiting the di unit does not measurably change over the same elapsed time. so this fact is not an issue i wish to address.
so my current setup is this. ro/di goes into solenoid valve. valve goes into kalk reactor. kalk reactor goes into tank.
yes i wish to add another tank.
so to put two valves between the kalk reactor and the tanks would put full pressure into the kalk reactor. this would cause a leak. hence the pressure regulator.
i am familiar with your recomended setup, pros and cons.
you are right about the membrane diffusing impurities. i have in fact measured it. in apx two hours of no flow but at full household pressure. the membrane releases enough impurities to increase the tds by 3 ppm (resolution of 1 ppm) in the water flowing to the di unit. a reading of this water during full flow is 1 ppm. the water exiting the di unit does not measurably change over the same elapsed time. so this fact is not an issue i wish to address.
so my current setup is this. ro/di goes into solenoid valve. valve goes into kalk reactor. kalk reactor goes into tank.
yes i wish to add another tank.
so to put two valves between the kalk reactor and the tanks would put full pressure into the kalk reactor. this would cause a leak. hence the pressure regulator.
jdieck
New member
Order from www.mcmaster.com look for part number 8113K41 with output pressure of 0 to 25 psi with instant tube fittings
Delrin Miniature Pressure Regulators
Small size and Delrin (acetal) body make these perfect for tight spaces requiring light weight and corrosion resistance. Use with process water and deionized water. Diaphragm is Buna-N. Furnished with a 1/4" NPT female gauge port and a bottom clean-out plug for servicing. Color is black. Maximum inlet pressure is 300 psi. Temp. range is 33Ã"šÃ‚° to 150Ã"šÃ‚° F. Connections: NPT female or instant tube fittings.
Delrin Miniature Pressure Regulators
Small size and Delrin (acetal) body make these perfect for tight spaces requiring light weight and corrosion resistance. Use with process water and deionized water. Diaphragm is Buna-N. Furnished with a 1/4" NPT female gauge port and a bottom clean-out plug for servicing. Color is black. Maximum inlet pressure is 300 psi. Temp. range is 33Ã"šÃ‚° to 150Ã"šÃ‚° F. Connections: NPT female or instant tube fittings.
douggiestyle
New member
your the man now dog!
i searched mcmaster. guess not good enough.
big thanks!!!
i searched mcmaster. guess not good enough.
big thanks!!!
