Damcos BRC 022-A1 Hydraulic Actuator 051-2321

Damcos BRC 022-A1 Hydraulic Double Acting Balanced Rotary Actuator (MPN: 051-2321)

The Damcos BRC 022-A1 (Part Number: 051-2321) is a marine-grade, double-acting balanced rotary actuator engineered for quarter-turn operations. Built around a patented balanced rotary helical spline/vane mechanism, the actuator delivers constant high torque across the entire 90° travel stroke while neutralizing destructive side loads and spindle bending moments.

Operating within standard working pressures between 30 bar and 135 bar (with factory hydro-test ratings reaching 315 bar and a burst rating of 675 bar), the BRC 022-A1 provides fail-safe, bi-directional hydraulic power. It is primarily deployed in maritime ballast, cargo handling, bilge, fuel oil transfer, and offshore hydraulic valve remote control systems (VRCS).

Model Details

• Model Series: BRC Series (Balanced Rotary Compact)
• Design Frame / Displacement Variant: 022-A1
• Manufacturer Part Number (MPN): 051-2321
• OEM Legacy Marks: Danfoss Fluid Power / Damcos A/S / Emerson Automation Solutions

Technical Details

Compatibility & Valve Mounting

• Valve Types: Suitable for DN50, DN65, DN80, DN100, DN125, and DN150 marine butterfly valves, ball valves, and high-performance plug valves (depending on pipeline differential pressure torque demand).
• Compatible Valve Brands: Keystone, Keystone Vanessa, Duvalco, Wouter Witzel, Nakakita, Danfoss, Somas, Bray, and Westad.
• Control Blocks & Modular Accessories: Direct bolt-on interface for Damcos CB blocks (Control Blocks), CBF (with filter), CBF-D (double pilot non-return valves), flow throttle valves, and portable hand-pump emergency override blocks.
• Indication Systems: Matches direct-mounted Damcos DPS (Digital Position Sensor), Damcos EL (Electric on/off microswitch box IP68), and hydraulic flow-metering volumetric position transmitters.

Part Number Cross-References

• Emerson / Damcos MPN: 051-2321
• Danfoss Marine Legacy Reference: 051-2321 / BRC022-A1 / BRC 22 A1
• Associated Overhaul Seal Kit: 160N42xx series (Standard Nitrile / Viton repair pack)
• Functional Equivalent Model: Emerson Damcos BRC 022 Series C double-acting quarter-turn actuator

Applications

• Ballast Water Management Systems (BWMS): Valve operation in double-bottom manifolds, peak tanks, and deep-well ballast sea-chests.
• Cargo Oil Handling (Tankers & FPSO): Cargo tank suction, stripping lines, drop valves, and crude oil washing (COW) isolations.
• Bilge & Fire-Fighting Systems: Remote quarter-turn safety isolation in engine room machinery spaces and void cofferdams.
• Fuel Oil Transfer & Bunkering: Heavy Fuel Oil (HFO), Marine Gas Oil (MGO), and marine lube oil manifold switching.
• Submerged Void Installations: Permanent wet-well or cofferdam locations requiring IP68 continuous submersion ratings.

Frequently Asked Questions

What does “double-acting” mean for the Damcos BRC 022-A1 actuator?

A double-acting actuator uses hydraulic pressure for both the opening and closing operations. Pressurizing Port A drives the internal balanced rotary mechanism clockwise to close the valve, while pressurizing Port B directs fluid to the opposite chamber to rotate the actuator counter-clockwise to open the valve. It does not rely on an internal mechanical spring return.

What is the difference between Damcos BRC 022-A1 and BRCF 022-B1?

The BRC 022-A1 is a double-acting actuator requiring hydraulic power in both directions. The BRCF 022-B1 is a single-acting, spring-return fail-safe actuator that uses hydraulic pressure to open (or close) and heavy internal coil springs to automatically drive the valve to its fail-safe position if hydraulic pressure is lost.

Can the BRC 022-A1 actuator be submerged in water or ballast tanks?

Yes. The BRC series is constructed from ductile iron (GGG 40) with corrosion-resistant internal shafts and fasteners. When coated with an approved marine epoxy system and fitted with sealed hydraulic connections and an IP68 electrical or hydraulic position indicator, it is fully rated for continuous submerged service in ballast water, seawater chests, and cargo tanks.

Which hydraulic fluid should be used with this actuator?

Use clean, acid-free mineral-based hydraulic oils with an operating viscosity between 15 and 200 cSt (commonly ISO VG 32 or ISO VG 46 marine hydraulic oils). Ensure the system fluid is maintained at or above ISO 4406 Cleanliness Code 21/19/16 to prevent scoring on the precision-machined internal surfaces.

How do I identify if my installed unit is 051-2321?

Examine the stainless-steel identification tag stamped on the top housing face. It displays the maker (“Danfoss”, “Damcos”, or “Emerson”), the Type code (“BRC 022 A1”), the Part/Order No. (“051-2321”), and the maximum operating/test pressure.