| Housing Material | Plastic housing manufacturers | Polypropylene or reinforced thermoplastic; generally lightweight and resistant to many chemicals; commonly supplied in single- and multi-cartridge formats. | Water treatment, food and beverage prefiltration, chemical processing, and low-to-moderate pressure service. | Chemical compatibility, temperature limit, pressure rating, connection type, and mold quality. |
| Housing Material | Stainless-steel housing manufacturers | Common grades include 304 stainless steel for general service and 316L stainless steel for improved corrosion resistance; polished or passivated finishes may be available. | Industrial water, process chemicals, pharmaceuticals, cosmetics, food processing, and high-purity applications. | Weld quality, surface finish, corrosion resistance, drain design, documentation, and pressure-vessel compliance. |
| Housing Material | Special-alloy housing manufacturers | Constructed from materials such as duplex stainless steel, nickel alloys, or other corrosion-resistant alloys for demanding environments. | Seawater service, aggressive chemical processing, offshore systems, and high-corrosion industrial duties. | Alloy suitability, chloride resistance, design pressure, fabrication traceability, and lifecycle cost. |
| Cartridge Capacity | Single-cartridge housing manufacturers | Designed for one standard cartridge, often using common lengths such as 10, 20, 30, or 40 inches. | Point-of-use filtration, laboratory systems, small commercial equipment, and pilot plants. | Compact footprint, replacement convenience, connection size, and compatibility with the selected cartridge. |
| Cartridge Capacity | Multi-cartridge housing manufacturers | Available with multiple cartridges to increase flow capacity and reduce the frequency of housing replacement during maintenance. | Municipal water, industrial process water, pretreatment systems, and continuous production lines. | Flow distribution, sealing arrangement, pressure drop, access for maintenance, and scalable cartridge count. |
| Cartridge Interface | DOE-compatible housing manufacturers | Designed for double-open-end cartridges that seal at both ends within the housing. | General industrial filtration and applications prioritizing broad cartridge availability. | End-cap fit, gasket or seal selection, installation time, and leakage prevention. |
| Cartridge Interface | SOE-compatible housing manufacturers | Designed for single-open-end cartridges with an integrated sealing interface at one end. | High-purity water, pharmaceutical processing, food and beverage, and applications requiring controlled sealing. | Seal integrity, cartridge locking method, cleanability, orientation, and compatibility with validated processes. |
| Operating Pressure | Standard-pressure housing manufacturers | Products commonly designed for low- to moderate-pressure water and process applications; the exact rating depends on material, temperature, and design. | Building water systems, prefiltration, irrigation, and general process filtration. | Rated pressure at operating temperature, safety factor, pressure-drop data, and relief provisions. |
| Operating Pressure | High-pressure housing manufacturers | Heavy-duty metal construction with reinforced closures and connections for elevated-pressure process streams. | High-pressure water treatment, industrial chemicals, hydraulic fluids, and specialized process systems. | Engineering calculations, hydrostatic testing, closure design, fatigue resistance, and applicable pressure codes. |
| Sanitary Design | Sanitary and hygienic housing manufacturers | Smooth internal surfaces, minimized dead legs, sanitary fittings, drainability, and clean-in-place considerations. | Pharmaceuticals, biotechnology, dairy, beverages, and other hygienically controlled processes. | Surface finish, cleanability, material certificates, sanitary fitting standards, and validation documentation. |
| Customization Capability | Standard-product manufacturers | Catalog housings with established dimensions, connection options, cartridge lengths, and replacement parts. | Routine filtration installations with predictable operating conditions. | Lead time, spare-part availability, technical drawings, and consistency across production batches. |
| Customization Capability | Engineered-to-order manufacturers | Custom inlet and outlet arrangements, special alloys, unusual cartridge counts, automated valves, instrumentation ports, and skid integration. | Large industrial plants, offshore projects, semiconductor utilities, and complex process systems. | Engineering capability, design review, project management, testing, documentation, and after-sales support. |
| Quality and Compliance | Certified quality-system manufacturers | Manufacturing controlled through documented quality procedures, material traceability, inspection records, and applicable product testing. | Regulated industries, export projects, municipal infrastructure, and critical process applications. | Quality-system certification, pressure testing, welding qualifications, inspection records, and regulatory suitability. |