Specifications

G70
Parker Hannifin Corporation
Pneumatic Division
Richland, Michigan
www.parker.com/pneumatics
Flow
Controls
Integrated
Fittings
Sensing Control
Panel
G
Pressure
Pressure
Pressure
Man
Reg
Pressure
Pressure
Operation 1
Operation 2
Operation 3
Operation
A B
B
B
C
A
Man
A
Man
C
Man
D
M
A
N
M
a
n
Pressure
Man
Man
Accessories
Typical Applications
Catalog 0600P-E
Quick Exhaust & Shuttle Valve
Rapid Retraction –
Double Acting Cylinder
In this circuit, air is exhausted through
a Quick Exhaust Valve that is close
coupled to the cap end of the cylinder.
Because the Quick Exhaust Valve
has a greater exhaust capacity than
the four-way Control Valve, increased
cylinder speed can be accomplished
with a smaller and less expensive
control valve.
Dual Pressure Actuation of
Double Acting Cylinder
This circuit utilizes a Quick Exhaust
Valve and a three-way Control
Valve to permit rapid extension of the
cylinder at a high pressure. nder life.
NOTE: Line pressure must be 3 or 4 times
greater than rod end pressure. Effective
working pressure is the differential
between the cap and rod end.
Bi-Directional Control of Two
Double Acting Cylinders
This circuit provides maximum control
with a minimum of valving. A large
four-way Control Valve is not needed
to permit the rapid retraction of
Cylinder A, as the Quick Exhaust Valve
performs this function. The extension
of Cylinders A and B and retraction
of Cylinder B are controlled by Speed
Control Valves.
Typical “Shuttle Valve” Applications
Typical “Quick Exhaust Valve” Applications
“OR” Circuit
The most common application of the
Shuttle Valve is the “OR” Circuit. Here
a cylinder or other work device can be
actuated by either control valve. The
valves can be manually or electrically
actuated and located in any position.
Memory Circuit
This circuit enables continuous
operation once initiated. Pressure is
delivered to the circuit when Valve A is
actuated. This allows pressure to pass
through the shuttle valve actuating
Valve B. Pressure then flows through
Valve B and also the other side of the
shuttle valve which holds Valve B open
for continuous operation. To unlock
the circuit, Valve C must be opened to
exhaust the circuit and allow Valve B to
return to its normally closed position.
Interlock
This circuit prevents the occurrence
of a specific operation while one or
another operation takes place. When
either Valve A or B is actuated to
perform operation 1 or 2, Valve D
is shifted to the closed position and
prevents operation 3 from occurring.