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Valves >
Mechanically actuated directional control valves: Roller lever valves with idle return
Type Valve function Type of control
Standard
nominal flow
rate
Pneumatic
working line
Operating
pressure Description
Roller lever valve
with idle return
L-3-M5,
L-3-1/4-B,
L-4-1/4-B,
LO-3-1/4-B
3/2-way, single
solenoid,
closed,
3/2-way, single
solenoid,
open,
5/2-way, single
solenoid
Direct 80 ... 600 l/min G1/4,
M5
-0.95 ... 10 bar • With roller lever
• Suitable for vacuum operation
• Directly actuated
• Die-cast aluminium design
online: lo-3
Non-return valves and quick exhaust valves
Type
Pneumatic
connection
1
Standard
nominal
flow rate
Standard
flow rate
exhaust
6->0 bar
Standard
nominal
flow rate
pressuri-
sation 6->5
bar
Standard
nominal
flow rate
1->2 (6-5)
Operating
pressure Description
Non-return valve
H, HA, HB
G1/8,
G1/4,
G3/8,
G1/2,
G3/4,
M5,
QS-4,
QS-6,
QS-8,
QS-10,
QS-12,
R1/8,
R1/4,
R3/8,
R1/2
115 ...
2,230 l/min
1,000 ...
5,900 l/min
-1 ... 12 bar • Valve function: non-return
• Screw-in or in-line installation
• With connecting thread at both ends,
push-in connector at both ends,
threaded/push-in connector
online: h-qs
Non-return valve
HGL
G1/8,
G1/4,
G3/8,
G1/2,
M5,
QS-4,
QS-6,
QS-8,
QS-10,
QS-12
130 ...
1,600 l/min
0.5 ... 10
bar
• Valve function: piloted non-return
function
• Pneumatically piloted
• Screw-in with male thread
• Pilot air connection: M5, G1/8, G1/4,
G3/8, QS-4
online: hgl
Manual override
HAB
G1/8,
G1/4,
G3/8,
G1/2
165 l/min 0 ... 10 bar • Valve function: exhaust component
• For non-return valve HGL
• For manual exhausting of air trapped
in a cylinder
online: hab
2012/08 – Subject to change – Systems, solutions and expertise for the automotive industry and its suppliers www.festo.com/catalogue /... 75
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