AWHP superheat & sub-cooling

[Gary]

The water regulating valve has still eluded me, but, for now, I propose to manually set the flow via an inline gate valve - until a suitable valve can be sourced. May have to drive a valve through an actuator & controller, if pressure/flow valve cannot be sourced. Any ideas on this?

Maybe this will help:

http://www.grainger.com/Grainger/sta..._reseller.html

http://www.grainger.com/Grainger/items/4LZ98

http://www.grainger.com/Grainger/wwg...=27&submit.y=3

Hmmmm... these seem to be limited to 260psi (Tc,sat = 65C), which may not be high enough for our purposes.

On the other hand, modifying it may be as simple as adding a spacer under the spring.

http://www.grainger.com/Grainger/rp_...&iw=713&ih=600

And here a manufacturers tech bulletin:

http://cgproducts.johnsoncontrols.co...PDF/125687.PDF

High pressure valves:

http://cgproducts.johnsoncontrols.co...DF/1900575.PDF

http://cgproducts.johnsoncontrols.co...F/12011514.PDF