ARAG 853 Digital Valve Specifications & Installation
The ARAG 853 series electric valves are designed for professional agricultural use as flow switches in systems under pressure
1. Technical & Performance Specs
Power Requirements: 12 Vdc at 3A
Operating Times: Ranges from 1.4 to 2.3 seconds for most models
Note: 3-way bottom connection models have longer actuation times of 2.8 to 4.6 seconds
Temperature Range: Designed for standard agricultural spraying environments
Tightening Torque for Bolts:4 to 5 Nm (36 to 44 inch/lbs) depending on the specific model code
2. Maximum Operating Pressure
The pressure limit is determined by the lowest-rated coupling attached to the valve
Standard Threaded (1" to 1.5"): 10–12 bar (145–174 PSI)
2" Couplings: 8 bar (116 PSI)
3" Couplings: 5 bar (72 PSI)
Camlock Couplings: Typically limited to 10 bar (145 PSI)
3. Electrical Configuration (Wiring)
These valves can be configured for two different types of operation depending on your control system:
3-Wire Operation: 12 Vdc power is always connected. A separate command wire triggers the valve to turn clockwise (Open/Close). Disconnecting that command wire causes the valve to turn counter-clockwise
2-Wire Operation: Rotation is achieved by inverting the polarity of the power supply using a double switch
LED Status Indicators:The integrated LED identifies the status of the internal ball:
Red: Ball is in Position A
Yellow: Ball is in Position B
Off: No power supply or reversed polarity (in 3-wire mode)
[Image Placeholder: Wiring diagram for 2-wire vs 3-wire operation from Page 4]
4. Installation Safety
The "No Load" Rule: Do not operate the valve without liquid (no load) for long periods, as it may damage internal gaskets and cause the valve to block up
Foreign Bodies: Never insert hands or objects into the ball hole while the valve is powered; this can lead to crushing or amputation
Orientation: The geared motor can be rotated in 90° steps to fit your specific system layout
5. Maintenance
Flushing: Clean the interior of the valve whenever the entire system is cleaned
Seal Replacement: If the valve is opened for extraordinary cleaning or seal checks, the seal kit for that orifice must be replaced to ensure it remains leak-proof
Initial Test: After installation or maintenance, always pressure-test the system with clean water only before using chemicals
Troubleshooting the Digital Valve
Fault
Possible Cause
Remedy
Valve does not work
Lack of power or faulty cables.
Check all connections and harnesses; replace cables if needed.
Valve does not work
Supply voltage too low.
Verify that harnesses are suitable for the system and power is 12V.
Valve leaks
Foreign bodies or worn seals.
Remove debris from the ball or replace the seal kit.