CFU Compact Filter Unit - Offline Filter Systems & Carts - Fluid Conditioning Equipment - Hydraulic & Lubricating Filtration Systems

Hydraulic & Lubricating / Offline Filter Systems

CFU Compact
Filter Unit

Donaldson Hy-Pro's most portable offline filtration unit. 47 lbs, 21" tall, hoists into turbine nacelles or filters straight from a 55-gallon drum. Three-model lineup, six element configurations, and pneumatic option for explosion-proof environments.

CFU Compact Filter Unit

Product Overview

Bigger isn't always better. The CFU brings real Hy-Pro filtration into spaces where carts and skids can't fit. Built from lightweight aluminum with a closed ergonomic handle, it hoists into turbine nacelles, filters new oil straight from the barrel before it enters your reservoir, or flushes in-service fluid through staged elements to drive ISO cleanliness codes back to spec.

47 lb total weight in a 21" × 21" × 12" aluminum frame, smaller than a carry-on suitcase
Two elements in series (M9/M2 models) for staged particulate and water removal in a single pass
DFE-rated G8 Dualglass media with β3[C] ≥ 4000 capture efficiency
Six element configurations across three models for flow rates from 0.5 to 5 gpm
Standard upstream and downstream sample ports for before/after fluid analysis
Pneumatic air-motor option removes the cord entirely for explosion-proof environments
Closed ergonomic handle for hoisting into nacelles, mezzanines, and confined spaces
Color customization to match facility safety standards

Choose the Right Model

CFUM9

Two MF90 cartridges in series. Most popular configuration. Staged filtration in a single pass for general-purpose hydraulic and lube oil conditioning.

CFUM2

One MF110 cartridge. Single-stage with a larger element for higher dirt-holding capacity when you don't need staged media.

CFUD

Two S75D spin-on filters in parallel. Lowest-cost element replacement. Disposable spin-ons for service-light operations.

Specifications

Dimensions (H × L × W)

21" × 21" × 12"

Weight

47 lb (21 kg)

Inlet

3/4" Male JIC, 37° Flare

Outlet

1/2" Male JIC, 37° Flare

Flow Rate Options

0.5, 1, 2, 5 gpm or 1–5 gpm Variable

Filter Bypass

25 psid (1.7 bard)

ΔP Indicator Trigger

22 psi (1.5 bar)

Viscosity Range

2–5,000 cSt

Fluid Temperature

30°F to 225°F (0°C to 105°C)

Hoses

3/4" × 8 ft suction · 1/2" × 8 ft discharge

Media Options

M — G8 Dualglass A — Dualglass + Water Removal W — Stainless Wire Mesh

Available in 1, 3, 6, 10, 16, and 25 micron grades. M and A media deliver βx[C] ≥ 4000 efficiency. Specify P9 (phosphate ester) or S9 (Skydrol) compatibility for synthetic fluids.

Power & Hazardous-Area Options

Dual-Rated 110/120V 220V / 230V Single Phase 50Hz / 60Hz Pneumatic Air Motor Explosion Proof Class 1 Div 1 CE Marked

Typical Applications

Wind turbine nacelle gearbox conditioning where the unit must be hoisted up
New-oil polishing straight from 55-gallon drums before transferring to reservoirs
Small gearbox top-off and reservoir conditioning under 100 gallons
Field service work where a cart won't fit through doorways or up stairs
Material delivery systems and conveyor lines with many small distributed gearboxes
Explosion-proof environments using the pneumatic air-motor option
Phosphate ester and Skydrol systems with the appropriate fluid-compatibility option

Get Started

Tell us your fluid type, target ISO cleanliness code, viscosity range, and whether you need explosion-proof or pneumatic. We'll spec the right model, flow rate, and media.

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