Anybody ever heard of a .....

[TwincamDave]

RAWL s Device? Supposed to be a new type of metering device. Thanks for any help,Dave...

[icemeister]

RAWAL Device

It's a hot gas bypass/desuperheating control, not a metering device like an expansion valve. It's made up of a HGBP valve, a temperature piloted expansion valve for desuperheating and a mixing chamber.

Pretty old school technology. It's been around for many years

[TwincamDave]

Thanks that was what I was after.

[Dowadudda]

I have installed a few and have had great success. You can take a single condensing unit and make it of variable capacity. Very nice when you have problems with a single hooked up to several or more loads and your having issues. A little in depth to install but really nice control. The first one I put in was over 4 years ago and have not had one problem with it.

[TwincamDave]

Good to know,I think we are going to start using them.

[flange]

be carefull on larger systems, especially if you have unloaders. on small package stuff up to about thirty tons or so, they work well.