[cfe]

could not find specs on this solenoid valve. this number from valve body R0404 1 240RA-H9.
looking for tonnage capacity.
leaky solenoid need replacement.

coil specs Emerson R0607 AMG 120v 17 Watt 60HZ

any input please!

 

[jpsmith1cm]

could not find specs on this solenoid valve. this number from valve body R0404 1 240RA-H9.
looking for tonnage capacity.
leaky solenoid need replacement.

coil specs Emerson R0607 AMG 120v 17 Watt 60HZ

any input please!

Why replace it?

Just get the o-ring and rebuild kit and repair it.

 

[cfe]

Why replace it?

Just get the o-ring and rebuild kit and repair it.

took it apart and there is damaged valve seat.

 

[Techman9]

Does it look like this?

 

[Techman9]

I'm almost positive its and ''older'' Emerson

Part # 060376 (5/8'') or 060377 (7/8'') or 060378 (1 1/8'')

http://www.emersonclimate.com/Documents/FlowControls/pdf/solenoids/catalog/240RA.pdf

 

[cfe]

Does it look like this?

its not the same. I think an older 240RA series. don't understand the numbering valve body R0404 1 240RA-H9 represent.
liquid pipe 7/8. my guessing is about 25-50 ton capacity. an older carrier condensing unit, can't find M and S #.
2 Carlyle compressor 3 cylinder each with 2 evap coils.
for new replacement I think it will look like the picture.

what will happen if oversize or undersize valve installed?

 

[BBeerme]

Can you get tonnage off of the TEV's?

Also, since you have already taken the solenoid apart, measure the orifice. That'll give you a pretty big clue to the tonnage. I had to do something similar years ago and the orifice size is spec'd out, so it worked out well in my case.

 

[jpsmith1cm]

took it apart and there is damaged valve seat.

Is the actual brass damaged?


I find it very hard to believe that the brass seat is damaged on a standard solenoid valve.


Alco valves use a sort of papery disc and spring setup for the valve and it'll crinkle up at times. Rebuild kit has that part in it.

 

[cfe]

Can you get tonnage off of the TEV's?

measure the orifice. That'll give you a pretty big clue to the tonnage.
no more Data on the TXV head. measuring orifice is way to go thanks.

JP, yes the actual brass damaged very noticeable when took it apart.

what will happen if oversize or undersize valve installed?

 

[Unloaded]

I think If the valve is oversized the pressure drop will be too low and the valve may have trouble staying open. If it is undersized, the pressure drop across the valve will be too great and cause the refrigerant to flash.

 

[BBeerme]

measuring orifice is way to go thanks.

Use your drill index for an easy way to measure the orifice.

 

[Techman9]

The 7/8 valve I posted is good for 30t.

 

[bunny]

I think If the valve is oversized the pressure drop will be too low and the valve may have trouble staying open. If it is undersized, the pressure drop across the valve will be too great and cause the refrigerant to flash.

Pilot operated solenoid valves require a minimum amount of pressure drop to close. If they're oversized, there might not be enough pressure drop to move the disc when the coil is de-energized.

An oversized valve may run the risk of not closing.

In this case, rather than assume the damaged Emerson valve is correctly sized replace it with a valve hat is sized for the Btu capacity of the system. Don't select a valve based on connection size.

 

[Unloaded]

Pilot operated solenoid valves require a minimum amount of pressure drop to close. If they're oversized, there might not be enough pressure drop to move the disc when the coil is de-energized.

An oversized valve may run the risk of not closing.

In this case, rather than assume the damaged Emerson valve is correctly sized replace it with a valve hat is sized for the Btu capacity of the system. Don't select a valve based on connection size.

That makes sense. Thank you for correcting me.