Hydraulic Symbols Explained | Hydraulics Online
Our free downloadable PDF series includes hydraulic symbols for lines, pumps, motors, cylinders, accumulators, valves and other basic symbols

simple one way valve with a main pressure relief built in will do , youve a needle type flow controller there that will do for speed control ,, all you need is one valve , and maybe the hose from the hand pump extended . easier than trying to get the solenoid to work again . In fact theres a main pres relief valve built onto that valve slice looking at it , your 95% there , handy looking anvil though.I have a garage press.
The ram is single acting, presume spring return.
View attachment 305345
The pump however is knackered, tried to get seals a while back but they didn't last.
View attachment 305347
I also have this.
View attachment 305346
So I was thinking of hooking it to the press but will need to get a blow off valve at the very least.
AFAIK Usually P is pressure from the pump, T is return to the tank, A and B are the outlets from the valve, if there's 2 its double acting, like in and out on a hydraulic cylinder.Yeah, I've never seen a hydraulic drawing before but that just looks like a simple symbol. Is there a book or guide to what it means?
should this not be in show us your anvil thead too..... ahahahahhahaI have a garage press.
The ram is single acting, presume spring return.
View attachment 305345
The pump however is knackered, tried to get seals a while back but they didn't last.
View attachment 305347
I also have this.
View attachment 305346
So I was thinking of hooking it to the press but will need to get a blow off valve at the very least.
Yup. That’s what I think.I have a hydraulic valve (solenoid) and am unsure if I am reading the symbol correctly or not.
This is it.
View attachment 305340
What I think is
At rest the A, B, P and T ports are all connected so no pressure at all on any lines.
When left is operated P and B are opened and return flow is A to T
When right is operated P and A are opened and return flow is B and T.
Is that correct?
looks like an adjustable relief valve below the manifold.I have a garage press.
The ram is single acting, presume spring return.
View attachment 305345
The pump however is knackered, tried to get seals a while back but they didn't last.
View attachment 305347
I also have this.
View attachment 305346
So I was thinking of hooking it to the press but will need to get a blow off valve at the very least.
That has a pressure control. I’m not sure of the range that it covers but it should be the one marked on the picture.So I was thinking of hooking it to the press but will need to get a blow off valve at the very least.
looks like an adjustable relief valve below the manifold.
Yes, relief valve right enough, never noticed it.That has a pressure control. I’m not sure of the range that it covers but it should be the one marked on the picture.
View attachment 305351
Adjust the centre set screw out would reduce the pressure and in would increase the pressure
There is a flow control valve on one of the pipes so I should be able to regulate the flow via that and make it nice and slow. Screw the blow off out as far as it can go and flow control on highest and see how it performs.I would be a little cautious switching from a handpump to an electric driven pump:
It looks quite a small volume cylinder, how quickly will the electric pump move it without a flow control?
I would want a relief valve at hand level that was easily adjustable, so the pump does not just take the cylinder straight to relief pressure.
May be more controllable/quicker to just fit a second hand enerpac pump with new seals? I like the controllability of a handpump for pressing bearings in etc.
it will be grand , it worked before , so it will work again , the flow control will slow the speed of travel at the ram ...I suppose I could even shove a VFD on it to slow the motor down if I found it still too fast.
What you have should work though I would prefer adding an in line relief valve prior to the needle valve that you could operate by hand to build up pressure, the complication is how to tap the return line of the relief valve back to the reservoir when the pump and valves all appear integrated.Yes, that would be the ideal but I should be able to work with what I have hopefully.
If I did that I could just put it back into port B which would always be connected to the tank as I would only be operating the right hand side.What you have should work though I would prefer adding an in line relief valve prior to the needle valve that you could operate by hand to build up pressure, the complication is how to tap the return line of the relief valve back to the reservoir when the pump and valves all appear integrated.