Parker “ Flo-con” valves for R-22 head pressure in low ambient temperature

[Duty007]

Have a low ambient air cooled chiller R-22 that operates all year round ..Got two Flo-Con valves,one for the liquid receiver and one for the condenser..
How do you adjust them and what pressure should both be adjusted to for R-22 ?

Thanks

* Ps. Initially posted in the commercial forum but wasn’t sure of it was the right section for this kinda of question

[RANGER1]

Duty007,
Can you describe how they are piped up, any valve numbers.
Some similar set ups have valve between condenser drain line & liquid receiver set at say 1440kpa 40 deg C for R22.
Then bypass from discharge line into condenser to onto of liquid receiver.
Liquid drain valve will close if discharge pressure low & fills up with liquid until pressure increases.
Valve from discharge to liquid receiver works on differential pressure set to say 200kpa differential pressure across valve.
So liquid receiver would operate at minimum pressure of 1240kpa in this example.
This basically bypasses condenser.
Danfoss has a preset valve for this.

https://www.parker.com/parkerimages/Parker.com/Literature/Refrigerating%20Specialties%20Division/Literature/Catalogs/611.pdf

check page 40 for details