Alfa Laval
DOC Brazed Plate Heat Exchanger
The Alfa Laval DOC is a copper-brazed plate heat exchanger conceived as a dedicated oil cooler. It brings the efficiency and small footprint of brazed plate technology to hydraulic systems, with robust internally threaded connection flanges for straightforward piping.
Product Benefits
- Protects the hydraulics: Hydraulic oil that runs too hot degrades quickly and shortens the life of pumps, valves and seals.
- Compact heat removal: A brazed cooler like the DOC removes that heat efficiently without claiming much space on the machine or power unit.
- No seals in hot oil: The gasket-free construction means there are no elastomer seals in contact with hot oil to harden or fail.
- Simple, secure piping: Robust internally threaded connection flanges make installation simple and secure.
- Tested for the long run: The modular brazed construction is pressure-tested for dependable long-term service, and the unit is designed to tolerate full vacuum.
Where It's Used
- Hydraulic oil cooling: The DOC is built for oil cooling in hydraulic systems.
- Power packs and machinery: Think power packs, presses and mobile or stationary machinery where hydraulic fluid temperature must be kept in check.
- Water-cooled loop: It typically cools the oil against a water circuit in a closed loop.
Good to Know
- Materials and approval: Construction is stainless steel plates with copper brazing and stainless cover plates, and the unit is PED approved.
- Internally threaded: Connections are internally threaded, which suits compact hydraulic installations.
- Filter both circuits: Since the brazed core cannot be opened, keep both the oil and cooling water circuits clean and filtered.
- Size to the heat load: Selecting the right size against the system's heat load ensures stable oil temperature without oversizing.
