Festo MPA Series - Page 48

1. Summary of components
1−30
Festo P.BE−MPA−EN en 0910d
Advantages compared to the A or B pressure regulating
valve:
 Faster cycle times
 50% higher exhaust flow rate, as air is not exhausted via
the pressure regulating valve. The load on the pressure
regulating valve is also reduced.
No quick exhaust valves are required. The exhaust is
ducted completely via the valve terminal.
 Operating pressure is always present at the pressure
regulating valve, as the pressure is regulated upstream of
the valve, i.e. the regulator can always be adjusted. With
A or B pressure regulating valves, the valve must switch.
Disadvantages compared to the A or B pressure regulating
valve:
 Cannot be combined with 2x2/2−way valves with Ident.
code D, I and 2x3/2−way valves with Ident. code N, K, H
(non− reversible valves). These valves require working
pressure in channel (1) for the pneumatic spring (see circuit
symbol in appen di x B, Tab.B/4 and Tab.B/3).
Application examples:
 When the air pressure in channel (2) or (4) should not be
the same as the operating pressure of the valve terminal.
 When fast exhaust performance is required.
 When the pressure regulator must always be adjustable.
Notes on the installation of these pressure regulator plates
are provided in the assembly instructions
VMPA...−B8−R...C2−C...