Thanks a lot again for answer.
At least the direction question is no issue anymore.
I will have a closer look to the product flow as you have suggested.
At the moment we are in Tobago
, but we will go to Greneda soon.
I have to think about order Items to greneda.
First the gauge and the flowmeter.
Hope to find a way to order.
Second, maybe parts for clark pump.
Also I can send pictures to you.
But I need a email
My feedpumps are more or less the same shurflo like spectra use. Only they are for chemicals ,agriculture. The flow is 1.8gpm and 100psi
But after ask pumpvendor, the psi would go up to 150 psi, if the switch is bypassed, wich i did.
I did not change the pistons. Once I worked as a lathe operator, so I know about surfaces etc. and for me it looks as if the pistons after a short threatment with 1000 grid paper are just perfect.
The annular rings are perfect, under magnifying glass. ( I know how they look if bad) Also the spool valve.
I also checked and overhauled the checkvalves.
One had a little leak, but thats solved
The piston rod looks good.
The only thing I have not inspected is the pilot spool because thats difficult.
I managed to open the testport- no water at all
But as you say, the gauge and flowmeter are important.
There are some issus arround but they are not importend yet for the problem.
1-I need new J tubes, maybe the fittings as well.
2- I like to connect the membrane with the flexible tubes spectra use. Because they a bigger inside.
Of course with the fittings.
3- some O rings, ( maby the oversea kit)