Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations JAE on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Hydraulic accumulator values p3 and p4

Status
Not open for further replies.

JMLH

Industrial
Joined
Jun 4, 2019
Messages
7
Location
FI
Hi, I've a hydraulic unit with two accumulators and there are normal values for accumulator pressures (p0, p1 and p2) in schematic, but there are also p3 and p4.
What do the p3 and p4 stand for?
p0 = 90 bar
p1 = 110 bar
p2 = 160 bar
p3 = 170 bar
p4 = 210 bar
Pressure relief valve is set to 250 bar.

It might have something to do with electric pressure transmitter controlling the two gear pumps on and off, but I have no information on the controlling pressures.
 
Sorry, I have no rights to post the schematic.

Could it be something with different pre-charging or usage temperatures?
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top