Alkon Catalog

S.O.S. CYLINDER CONTROL
FEATURES:
• Compact modular construction
• Safely neutralizes pneumatic cylinder
movement if emergency stop is initiated
• Exhausts cylinder air when supply
pressure is exhausted
• “Pre-charges” system when air is applied
to prevent cylinder slamming
• Bypassed to normal 4-way valve operation
when system is not being exhausted or pressurized
• Single or dual interposed regulation available
• Automotive interface
AIR FLOW DATA:
Model Port Size Average Cv
AU-2 1/2 NPT 4.0
AU-2 3/4 NPT 4.4
ORDERING INFORMATION:
Horizontal Cylinder Applications
To order an S.O.S. Control Valve; select the following:
1. Model Number
2. Pipe Size
3. Operator Style
4. Voltage/Hertz
The SOS bypass valve is an interface between an automotive 250 size valve (AU-2)
and base. The SOS valve works in conjunction with the 4-way 3-position (“B” spool)
power valve to provide 3-position valve function plus the ability to render the valve
and cylinder combination safe for maintenance.
The 3-position power valve enables the operator to stop cylinder movement by deenergizing
both solenoids on the power valve, causing the spool to center, thus
blocking all valve ports. This function is useful during emergency stop procedures.
By bleeding the trapped air between the valve and the cylinder piston (both sides),
the SOS bypass valve renders the “charged” air cylinder safe. This function is
initiated by exhausting supply pressure to the power valve.
The bypass valve also allows both sides of the cylinder to “precharge”
simultaneously when supply pressure is reapplied to the power valve. After the
cylinder is filled with equal pressure on both piston sides, the bypass valve disables,
and the power valve takes command. This cylinder precharging method allows
the flow controls to properly operate on the first cycle to prevent cylinder slamming.
EXAMPLE:
AU2 - 10007 - 37F - 120V
HORIZONTAL CYLINDER OPERATION
ALKON
Loc-Master ®
(optional)
VERTICAL CYLINDER OPERATION
Voltage:
Specify 120V AC or 24 VDC
ALKON
Loc-Master ®
(optional)
NOTE: Vertical Cylinder Applications,
Add AU2-AMR-O Regulator and 90A50125 Kit.
73
Series
Operator:
37F - Solenoid w/ 5 Pin Mini Connector (Ford Wired)
37C - Solenoid w/ 5 Pin Mini Connector (Chrysler Wired)
57F - Solenoid w/ 5 Pin Micro Connector (Ford Wired)
57C - Solenoid w/ 5 Pin Micro Connector (Chrysler Wired)
03 - Air Pilot Operated
Model/Pipe Size:
10007 = 1/2 NPT
10008 = 3/4 NPT
10009 = Valve Assembly Less Base