MAXIMATOR GPLV 2 - Operation of Air Amplifiers; MPLV 4 and MPLV 4 L Air Amplifiers

Technical Description
Air Amplifiers Revision 11.2011
9
3.1 Operation of Air Amplifiers
3.1.1 MPLV 4 and MPLV 4L air amplifiers
The charge pressure fills the compression compartment from port A. As no pressure
is applied to the drive compartment, the piston does not operate until it actuates the
pilot valve in the top cap. Drive air from port P
L
now flows through the control slide
valve, accessing the drive compartment. This compresses the air in the
compression compartment and conveys it to the pressure outlet (port B). When the
piston actuates the pilot valve in the bottom cap, the inflow of air into the drive
compartment is interrupted and the process begins again.
The pressure increase is due to the surface of the piston in the drive compartment
being four times larger than that of the piston in the compression compartment.
Example:
Drive pressure = 6 bars
Pressure ratio = 1:4
Operating pressure = 6 x 4 = 24 bars
Fig. 2: How MPLV 4 works
1 Pressure outlet
2 Charge pressure
3 Compression compartment
4 Pilot valve
5 Pilot valve
6 Drive compartment
7 Control slide valve
8 Exhaust
P
L
= Drive pressure
B = Pressure outlet
Y
2
= Exhaust air from pilot valve
A = Charge pressure
Y
1
= Exhaust air from control valve