GALLERY
 |  |
Construction of Automatic Recirculation Control Valve
Typical ARC valve construction includes:
Main Valve Body – Cast steel, stainless steel, or special alloys, designed per pressure rating.
Disc/Check Mechanism – Operates as a non-return valve in forward flow.
Bypass Control Device – Usually a variable orifice, spring-loaded piston, or pilot-operated trim that regulates minimum flow.
Bypass Line – Connects from ARC valve to pump suction tank/return line.
Seat and Seal – Metal-to-metal or soft-seated depending on design.
Optional Accessories – Noise reduction trim, cavitation resistance trim, special coatings for corrosive/erosive fluids.
Features of Automatic Recirculation Control Valve
Automatic operation (no external power required).
Combines functions of check valve + flow control + bypass valve in one unit.
Compact design, reducing piping and instrumentation needs.
Provides cavitation-free bypass operation.
Suitable for high-pressure and high-temperature services.
Can be supplied with noise-reducing multi-stage bypass trim.
Manufacturing Standards of Automatic Recirculation Control Valve
ARC valves are typically designed, manufactured, and tested according to:
API 6D / API 594 – For valve design and testing.
ASME B16.34 – Pressure/temperature ratings.
ISO 9001 – Quality assurance.
NACE MR0175 / ISO 15156 – For sour service material compliance.
DIN / EN standards – For European projects.
Advantages of Automatic Recirculation Control Valve
Protects pumps automatically without external controls.
Ensures long pump life by preventing overheating and cavitation.
Reduces the need for separate bypass lines and control valves.
Reliable in critical services (boiler feedwater, condensate, hydrocarbon processing).
Minimizes downtime and maintenance costs.
Applications of Automatic Recirculation Control Valve
ARC valves are widely used in industries where centrifugal pumps handle critical fluids:
Power plants – boiler feedwater pumps, condensate pumps.
Oil & gas – crude, product pipelines, refineries.
Petrochemical & chemical industries – process fluid pumps.
Water treatment plants – high-pressure feed pumps.
Desalination plants – high-pressure pumps for RO systems.
Operation & Maintenance Manual (Summary)
Operation
Installed at the pump discharge line.
Functions automatically based on pump flow (no operator intervention needed).
Ensure bypass return line is properly connected to suction tank.
Maintenance
Inspection Schedule:
Regularly check for leakage at seat and seals.
Inspect bypass line for erosion/corrosion.
Verify smooth disc/piston movement.
Cleaning:
Remove any dirt or scale that may restrict bypass trim.
Spare Parts:
Keep seals, springs, and trim kits in stock.
Overhaul Interval:
Every 2–3 years, depending on service condition.
Troubleshooting:
If bypass does not open → check for stuck piston or clogged bypass.
If leakage occurs → inspect seat and seals.
Leave your message