Medium pressure filters can be used in applications up to 2000 psi (13790 kPa). Donaldson offers both spin-on and in-line cartridge-style filters. Donaldson Duramax® filters are the highest rated medium pressure spin-on filters available. Duramax filters are proven, reliable, long-lived and easy to install.

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HMK03 Duramax® Spin-on Filters Working Pressure: 1000 psi / 6895 kPa / 69 bar Static Pressure: 2000 psi / 13790 kPa / 138 bar Flow Range: 0-25 gpm / 0-95 l/min HMK03 offers TWICE the pressure capability of competitive filters, yet is physically smaller than traditional housing/cartridge filter assemblies HMK03 specs
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HMK04 (single head) & HMK24 (dual head) Duramax® Spin-on Filters Working Pressure: 500 psi/3450 kPa/34.5 bar Static Pressure: 1000 psi/6900 kPa/69 bar HMK04 Flow Range: 0-35 gpm / 0-130 l/min HMK24 Flow Range: 0-60 gpm / 0-230 l/min HMK04/24 Duramax models offer high flow capacities, heavy-duty design, and a very wide choice of replacement filters. HMK04/HMK24 specs
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HMK05 (single head) & HMK25 (dual head) Duramax® -- High Flow Spin-on Filters Static Pressure: 800 psi/5520 kPa/55.2 bar Working Pressure: 350 psi/2413 kPa/24.1 bar HMK05 Flow Range: 0-50 gpm / 0-189.3 l/min HMK25 Flow Range: 0-100 gpm, 0-378.5 l/min Full-range performance with Synteq™ filter media for high-flow applications, with the ease and convenience of a spin-on! The double element head means double flow capability, with two filters to hold more contaminant! HMK05/HMK25 specs
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HNK04/05 Duramax® Spin-on & Cartridge Filters Working Pressure: 500 psi / 3450 kPa / 34.5 bar Static Pressure: 1000 psi / 6895 kPa / 69 bar Flow Range: 0-50 gpm / 0-189 lpm HNK Duramax offers improved performance including higher burst, greater fatigue strength and longer filter life compared to standard spin-ons. HNK04/05 specs
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W061 In-Line Cartridge Filter Working Pressures to 600 psi / 41 bar Typical Burst Pressure to 1500 psi max / 103 bar Flow Range to 100 gpm / 379 lpm W061 specs
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HDK06 In-Line Cartridge Filter Working Pressures to 350 psi / 2413 kPa / 24.1 bar Rated Static Pressure to 500 psi / 3448 kPa / 34.5 bar Flow Range: up to 150 gpm / 568 lpm Choose from a range of Synteq™ media or wiremesh to achieve the cleanliness level you need. Element is installed from the top for user convenience. HDK06 specs
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W041 In-Line Cartridge Filter Working Pressures to 500 psi / 34.5 bar Rated Static Pressure to 1500 psi max / 103 bar Flow Range to 300 gpm / 1135 lpm W041 specs
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W042 - In-Line Duplex Cartridge Filter Working Pressures to 400 psi / 27.6 bar Rated Static Pressure to 1500 psi max / 103.4 bar Flow Range to 300 gpm / 1135 lpm W042 specs
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HFK08 In-Line/Tank Mount Filters Working Pressures to 350 psi / 2413 kPa / 24.1 bar Rated Static Pressure to 500 psi / 3448 kPa / 34.5 bar Flow Range: up to 300 gpm / 1136 lpm Sturdy, versatile. Available in both in-line and in-tank styles. SYNTEQ and wiremesh media options, inside-to-outside element flow and a single center retention bolt for simplified servicing. HFK08 specs
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