Sat Jan 26, 2019

Pressure is actually 500 psi loss through the system. Should be 300, so flow is too large.

Small valve (5000 psi limit) reads 900 instead of 500 - not good reading at low end.
0 psi between outlet of valve and power cube return.
Short circuit from power cube shows 0 psi loss.
Temperature has little or no effect on reading - no change after it was warm.
Flow rate does have large effect. Throttling down with a flow control valve gets pressure down to 300 PSI. The small apertures in the valve are clearly responsible - they are about 1/4" - they look too small to have valve rated even at 10 GPM. Northman is rated at 16 GPM, Vickers is 10 GPM.
In the neutral position, cylinder valve still moves up. This will not work to press bricks. Is that due to differential push on the cylinder, where it doesn't spin motors but moves cylinders?

Fri Jan 25, 2019

CEB Press v16.09 - Scott II brick press - 20F temperature in workshop for testing in the snow - pressure on Surpluscenter DO3 valve was 700 psi at flowthrough on valve after CEB inlet. That is excessive. It could be the cold. It was going through 6 quick couplers - Power Cube, PC extension, CEB valve inlet, outlet, PC extension, PC. But it was on low throttle of 14 GPM. Verify that pressure is reduced significantly when it short circuits just through Power Cube. In actuality, this is going through 4 quick couplers (restriction points) - as it's after PC and extension.
Likely conclusion - cold temperature.
Waiting for warmup to 90F+ should resolve this
Use an IR termometer or just feel the hoses.
Also, check the short circuit condition and second P gauge to verify correct P reading on valve.
Expecting 300 PSI or less pressure upon freeflow. Can measure after the valve to get data points for optimizing system.
15% power loss is acceptable. For 2000PSI, that is 300 PSI.