2Overview
Festo – P.BE-MPA-E N – 1309f – English 25
All 5/2-way valves and 5/3-way mid-position valves can be used under all operating
modes:
– Standard operation with one or more pressure zones
– R eversible operation with compressed air supply via connections ( 3), (5) and exhaust
via port ( 1)
– Low pressure operation at 0 ... 3 bar
– Vacuum operation at –0.9 … 0 bar
Identification of the valves
The valves of the MPA-S valve terminal are marked by identification codes. By means of this identifica-
tion on the top of the valve, you can ascertain the equipment of your MPA -S valve terminal.
Ident.
code
Valve
B Piston spool valve, 5/3-way valve, mid-position open
D Piston spool valve, two monostable 2/2-way valves, normally closed, pneumatic spring
return
DS Piston spool valve, two monostable 2/2-way valves, normally closed, mechanical spring
return
E Piston spool valve, 5/3-way valve, mid-position exhausted
G Piston spool valve, 5/3-way valve, mid-position closed
H Piston spool valve, two monostable 3/2-way valves, control side 12 normally open, con-
trol side 14 norma lly closed, pneumatic spring return
HS Piston spool valve, two monostable 3/2-way valves, control side 12 normally open, con-
trol side 14 normally closed, mec hanical spring return
HU Polymer poppet valve, two monostable 3/2-way valves, c ontrol side 12 normally open,
control side 14 normally closed, mechanical spring return
I Piston spool valve, two 2/2-way valves, normally closed, pneumatic spring return
For dual-pressure operation: operating pressure at connection (1) or connection ( 5)
For vacuum operation: operating pressure via connection (1), vacuum at connection (5)
(e.g. for vacuum switching with ejector pulse)
Instructions in the sections 3.6.2 (pressure zone separation) and 3.6.6 (vacuum/low
pressure operation) and in the appendix B.1 (valve position components),
Tab. B . 1 … Tab. B.4
J Piston spool valve, impulse 5/2-way valve
K Piston spool valve, two monostable 3/2-way valves, normally closed, pneumatic spring
return
KS Piston spool valve, two monostable 3/2-way valves, normally closed, mechanical spring
return
KU Polymer poppet valve, two monostable 3/2-way valves, normally closed, mechanical
spring re turn
M Piston spool valve, monostable 5/2-way valve, pneumatic spring return
MS Piston spool valve, monostable 5/2-way valve, mechanical spring return
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