File: AM5UP005_E 01/2000/eIV • 23
4
∆p (bar)
Q (l/min)
5 bar
1 bar
AM.5.UP.A
AM.5.UP.B
AM.5.UP.AB
3
OVERALL DIMENSIONS
Support plane
specifications
PRESSURE DROPSORDERING CODE
AM.5.UP...
MODULAR
PILOT
OPERATED CHECK VALVES
CETOP 5
Max. operating pressure 280 bar
Minimum opening pressure spring 1 1 bar
Minimum opening pressure spring 5 5 bar
Piloting ratio 1 : 14,3
Max. flow 80 l/min
Hydraulic fluids Mineral oils DIN 51524
Fluid viscosity 10 ÷ 500 mm
2
/s
Fluid temperature -25°C ÷ 75°C
Ambient temperature -25°C ÷ 60°C
Max. contamination level class 10 in accordance
with NAS 1638 with filter ß
25
≥75
Weight 2,7 Kg
AM5UP type modular check valves
allow free flow in one direction by
lifting a conical steel seated poppet,
while in the opposite direction the fluid
can return by means of a small piston
piloted by the other line pressure (pi-
loted side).
The cast valve body allows limited
pressure drops during the fluid flow
through the various P/A/B/T lines.
They are available on single A or B
lines, and on double A and B lines
(see hydraulic symbols).
HYDRAULIC SYMBOLS
AM Modular valve
5 CETOP 5/NG10
UP Piloted check valve
** Control on lines
A / B / AB
* Minimum opening pressure
1 = 1 bar
5 = 5 bar
** 00 = No variant
V1 = Viton
5 Serial No.
Curve n. 3 = Piloted side flow
AM.5.UP...
SCREWS AND STUDS CH. IV PAGE 35
The fluid used is a mineral oil with a viscosity of
46 mm
2
/s at 40°C. The tests have been carried
out a fluid temperature of 50°C.
