The Domnick Hunter K330AO is an OIL-X Evolution series compressed air precision filter element manufactured by Domnick Hunter (now part of Parker Hannifin Group). "K330" in the model name represents the filter's housing size/flow rate, and "AO" represents its filtration precision class.
The following is key information about this filter element:
1. Product Specifications and Performance
Filtration Class (AO):
Main Function: Removes liquid water, liquid oil, and solid particles larger than 1 micrometer (μm) from compressed air.
Residual Oil Content: At 21°C, the oil content in the outlet air does not exceed 0.5 mg/m³ (i.e., 0.5 ppm w/w).
Working Principle: Employs a condensation filtration principle, coalescing tiny oil and water mists into droplets, which are then discharged by gravity or centrifugal force.
Applicable Media: Compressed air, inert gases, etc.
Typical Application Scenarios: Typically used as the second or third stage filter in compressed air handling systems (pre-filters generally require a Class D or Class P pre-filter to remove large particles and most moisture), protecting downstream equipment with specific air quality requirements, such as pneumatic tools, general spraying processes, and instrument air systems.
2. Technical Parameter Reference
Material: Typically composed of glass fiber filter media, a frame, and seals.
Operating Pressure: The standard design pressure is typically 1.0 MPa (approximately 10 bar), please refer to the nameplate on the casing for specific pressures.
Operating Temperature: Generally between 0°C and 80°C.
Replacement Cycle: It is recommended to replace every 8000 hours or 1 year, or based on differential pressure alarms. In harsh working environments (e.g., high dust, high humidity), the replacement frequency needs to be increased.