Hydraulic Oil Coolers
INTRODUCTION
These oil coolers are also suitable for heat transfer fluids, lubricating, transformer and quenching oils. They are high-quality products incorporating the best materials and the latest technical features. The tube stack is fully floating so that thermal stresses are minimized and it can be easily removed should cleaning be necessary.SELECTION
To make proper heat exchanger selection please contact us at 828-369-5417 for a complete catalog. Also, we can select by computer, the size of oil cooler required from the following information:
- Oil type or its viscosity at a specified temperature (cST at °C)
- Oil flow (I/min)
- Required oil outlet temperature (°C)
- Heat to be dissipated (kW)
- Temperature of cooling water (°C)
150°C OIL
We can supply coolers suitable for oil temperatures of up to 150°C.200°C OIL
In addition, we have a limited range of oil coolers suitable for use with oil or heat transfer fluids up to 200°C. These oil coolers have a cast iron shell, viton seals and a special tube stack.MINING
We have a limited range of oil coolers suitable for underground mining applications and water pressures up to 35 bar. These oil coolers have a cast iron shell, viton seals and a special tube stack with cupro-nickel tube.INSTALLATION
The oil coolers should be mounted as shown below to ensure that they operate full of water and should be connected for counter flow. If a water control valve is used it should be of the modulating type and fitted on the inlet side so that the cooler is not unnecessarily pressurized with water when the system is shut down. Care must be taken not to exceed the recommended water flow rates and the pH of the water should be between 7.2 and 7.8. For hydraulic applications, the oil cooler should usually be in the return pipe to tank as shown in the diagram, but on installations where this is subject to violent fluctuations in flow and pressure, it may be advisable to connect the cooler into a separate circuit with its own pump. It is good practice for the oil pressure in the cooler to be higher than the water pressure so that should a leak occur, the oil will not be contaminated with water.
SEALS
The standard seal material is nitrile. We can, at extra cost, supply seals compatible with the various fire resistant fluids. To specify these seals a suffix should be added to the oil cooler type number as follows: EP (Ethylene Propylene), VT (Viton). When ordering replacement seals, change the suffix NT in the seals part number as required.GENERAL
Please contact us for applications not covered by our published information. We can also advise on the best method of installing coolers particularly for unusual or critical applications. If a single unit is too small, multiple units can be connected either in series or parallel according to the oil flow rate. We can also supply the PK range of coolers with 4" ports and special high flow tube stacks suitable for oil flow rates up to 1400 I/min. We also have inserts available to convert ports to inch dimensions.
For a full catalog, pricing, delivery or technical assistance, contact us today.