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Hi, I am looking for a filter element by pass valve which is installed at the filter element outlet. The concern with this installation type is that it is necessary to have two sealing areas on the by pass poppet. It is easy to install one metal to metal sealing area but it is difficult on the...

unclesyd, what do you call a stretcher ? sorry I'm a french guy and I am afraid I don't understand your previous post ... for your information, it is for high pressure hydraulic filters

Thanks a lot for these web sites. Do you know if it is possible to find a 4" wrench in crowfoot type ? ... always connectable to a torque wrench

The customer wants a standard tool. Thanks for "Proto", I was forgotten it !

Hi, I am looking for a wrench 4" supplier. This wrench must be connectable on a torque wrench. Do you know one ? Thanks Eric

Hydromech Thanks a lot to give me these information ! It helps me to understand better the valve behaviour. Daunay

Yes, the valve is held by a spring. What are the forces which maintain the valve opened ? It is not possible that it is the same force which has open the valve at 12 bar because the pressure drop is lower than 12 bar (8.5 bar), so the valve should be closed ! I think that it is the force...

Hydromech, The 8.5 bar is the pressure drop measured accross the valve. This valve is designed to begin to spill @ 12 bar + or - 10% In fact, the valve opens when there is 12 bar (+ - 10%) of pressure difference between its inlet and its outlet. When the flow rate is established through it...

Hi, I am trying to calculate the pressure drop through a by pass valve (simple stage valve). I am not sure to understand what is the behaviour of the valve when the flow goes through it. For instance, in the by pass I am studying, the cracking is 12 bar but the pressure drop measured for low...