Four Stage Hankison HF 20 Series Filter Package with HDF4

The low pressure SPX Hankison HF 20 series filter package includes four stage filtration for up to 60 CFM (1699 L/min) compressors with a #10 SAE inlet fitting, on/off ball valve and a #10 SAE fitting for a diver's hose. The included HDF4 desiccant air dryer generates a flow capacity of 43 SCFM @ 150 psi. The dryer can also be used with carbon for odor/gas removal and/or hopcolite catalyst for converting CO to CO2. This assembly does not include the desiccant blend to fill the HDF filter. This package is available in an aluminum frame for an additional cost.

SKU
$1,829.70
Hankison Genuine Parts

Nuvair is an Authorized Hankison® Distributor
Nuvair sells only genuine parts and equipment manufactured by SPX Flow Hankison®. Do not be fooled by cheap aftermarket copies of original Hankison® equipment. Items labeled “replacement” or “alternative” are not manufactured by SPX Flow Hankison®.

Nuvair stocks low pressure breathing air filtration packages (housings and filters) commonly used in commercial diving. Whether you are looking for individual filters or multi-stage filtration packages, Nuvair has your solution in stock. Order individual components online or contact us to put together a package for your specific needs. Systems have a maximum operating pressure of 200 psi (14 bar).

Maximum Pressure & Temperature Operating Range

Drain Type Maximum Operating Pressure Maximum Operating Temperature Minimum Operating Temperature
Drain Plug

300 psi (21 bar)

150°F (66°C) 35°F (2°C)
Internal Automatic Drain

250 psi (17 bar)

150°F (66°C)

35°F (2°C)

Drain plug standard. Externally mounted automatic drains are available.

Performance Data

ISO performance data of the three-stage HF Series filter housing when configured with Grade 1 (Oil Vapor Removal), Grade 5 (High Efficiency Oil Removal), and Grade 7 (Air Line) filter elements:

Element Removes ISO 8573.1: 2010 Air Quality Class Where Used
Grade 7

∙ Solids 1.0 micron and larger
∙ Remaining oil content 1 ppm/w

∙ Solid Particles: Class 2
∙ Remaining Oil Content: Class 4
∙ Upstream of ultra high efficiency oil removal filters
∙ At point-of-use if aftercooler/separator installed upstream
Grade 5

∙ 99.999+% of solids 0.01 micron and larger
∙ Remaining oil content <0.008 ppm/w

∙ Solid Particles: Class 1
∙ Remaining Oil Content: Class 1

∙ Upstream of desiccant dryers
∙ Downstream of refrigerated dryers
∙ At point-of-use if aftercooler/separator installed upstream 
Grade 1

∙ Removes 99.9999+% of solids 0.01 micron and larger
∙ Remaining oil content <0.003 ppm/w (as a vapor)

∙ Solid Particles: Class 1
∙ Remaining Oil Content: Class 1

∙ Downstream of high efficiency oil removal filters