Donaldson Stainless Steel Housings Optimize Liquid Filtration Efficiency
Donaldson manufactures stainless-steel filter housings for precision liquid filtration, with designs intended to balance flow capacity, installation space and sanitary compliance. The portfolio serves brewing, dairy, beverage and industrial water-treatment applications, from sanitary final filtration to bulk pre-filtration. Housing structure and material selection are central to operating efficiency and maintenance cost, the company states.
A portfolio for sanitary and industrial duty
Company specifications list five core housing series, each configured for different flow rates, connection standards and installation constraints. Applications span ingredient water, wine, dairy, juice, soft drinks and industrial process water.
| Series | Primary features | Typical applications |
|---|---|---|
| PF-EG | Sanitary design; Code 7 connections; 3-A/ASME compliant | Ingredient water, wine, dairy, juice |
| P-FG | Economical bulk filtration; double-open-end and Code 7 filter compatibility | Process water, mineral water, soft drinks |
| PG-IL | Compact inline design for tight spaces | Beverage blending, cold brew, CIP water |
| P-PT | Industrial-grade 316L stainless steel; single-nut closure | Coolant, solvents, process-water pre-filtration |
| L-BH | Bag design; multi-bag configuration for high-flow duty | Industrial and commercial bulk coarse filtration |
Sanitary design and compliance
Surface finishing and connections
For food and beverage production, the PF-EG and PG-IL series are the sanitary-design options in the range. Both support Tri-Clamp connections and can be supplied with bead-blasted, electropolished or nitric-acid-passivated surfaces. Donaldson lists these treatments as helping to prevent microbial growth and meet 3-A and ASME certification requirements.
The PF-EG also supports Code 7 connections, while the P-FG is listed with compatibility for double-open-end and Code 7 filter elements, according to company specifications.
Installation and maintenance
Compact inline configurations
The PG-IL series is designed for production lines where space is limited. Its slim inline housing can be installed vertically or horizontally and uses standard Tri-Clamp connections, making it suited to final filtration ahead of packaging lines or inline process-water treatment.
Simplified filter changes
In the P-PT series, a single-nut closure is intended to simplify element replacement and reduce downtime. The PF-EG housing is rated to 150 psi, and the broader range is described as suitable for temperatures from -25°C to +150°C.
Process adaptability
The housings are presented as suitable for duties ranging from cold-brew beverage production to high-temperature clean-in-place flushing. Donaldson lists industrial-grade 316L stainless steel for the P-PT series and bag-based configurations for high-flow coarse filtration in the L-BH series.
