Dollinger Compatible Replacement Filter Elements

K Filter manufactures direct-fit replacement filter elements designed for Dollinger* filtration housings used in oil and gas production, petrochemical processing, refining, and marine operations. Built to match original equipment dimensions, these elements fit directly into existing vessels without requiring housing modifications or structural adapters.

Precision Engineering for Heavy-Duty Industrial Service

In high-pressure gas lines, lube oil loops, and chemical process streams, fluid filtration must withstand continuous pressure differential without element bypass or structural failure. K Filter replacement elements utilize multi-layer media configurations designed to maintain low initial pressure drop, high dirt-holding capacity, and consistent micron efficiency.

Filter media options are selected based on the specific fluid, operating temperature, and contaminant profile of your process:

Micro-glass Fiber Media: Provides high dirt-holding capacity and sub-micron particle retention for fuel gas, lube oil, and coalescing gas-liquid separators.

Woven Stainless Steel Mesh: Cleanable 316L stainless steel wire mesh engineered for high-viscosity fluids, aggressive chemicals, and elevated temperature streams up to 260°C.

Synthetic Polymer Layers: Moisture-resistant polyester and polypropylene depth media designed for amine sweetening, glycol dehydration, and water separation systems.

Technical Specifications and Performance Comparison

The table below summarizes standard technical specifications for K-Filter replacement elements compared to OEM baseline criteria.

Standard Specification Baseline for Dollinger* Compatible Elements

Specification Parameter	OEM Dollinger* Specification	K Filter Direct Replacement
Dimensional Compatibility	OEM Vessel Specs	100% direct-fit physical compliance
Filtration Efficiency	$\beta_x \ge 200$ (99.5%)	$\beta_x \ge 200$ to $\beta_x \ge 1000$ (up to 99.9%)
Filter Media Options	Glass fiber, synthetic, wire mesh	Micro-glass, 316L mesh, pleated synthetic
Structural Collapse Rating	5 bar to 21 bar	Tested up to 25 bar differential pressure ( $\Delta P$ )
Sealing Materials	Nitrile, Viton, EPDM	Buna-N, Viton (FKM), EPDM, PTFE gaskets
Core Construction	Perforated inner tube	Heavy-gauge stainless steel perforated inner and outer cores

Primary Applications and Operating Systems

K Filter replacement elements operate across main process loops and power systems:

Oil and Gas Extraction: Protection for gas compressor stations, natural gas dehydration units, and pipeline metering equipment.
Refining and Petrochemical Processing: Particulate removal from amine absorption towers, glycol reboilers, hydrocarbon feeds, and catalyst protection streams.
Marine and Offshore Operations: Fuel gas conditioning, turbine inlet air, lube oil purification, and bilge water separation on vessels and offshore platforms.
Industrial Process Gases: Filtration for nitrogen, hydrogen, oxygen, and high-pressure air distribution systems.

Quality Assurance and ISO Compliance

Every K Filter element undergoes fabrication integrity and differential pressure testing to meet or exceed industry standards:

ISO 2941: Collapse and burst pressure resistance testing.
ISO 2942: Verification of fabrication integrity and initial bubble point.
ISO 16889: Multi-pass performance testing for particle removal efficiency and dirt-holding capacity.
ISO 3968: Evaluation of pressure drop versus flow rate characteristics.