Unfortunately, I do not have any datasheet on the valve. Below is the id plate on the valve. The uphill side is on the right (green tube) and downhill on the left (white).
I am having trouble getting a pilot operated PRV to operate as I think it should. This 3 inch PRV is installed in a private, gravity-fed domestic water supply system on a mountain. There is storage tank at the top of the hill and home sites served by the system are located at various locations...