Donaldson hydraulic filter P170546

1. Product Introduction

The Donaldson P170546 Hydraulic Filter Element is manufactured using advanced processing technology,

 delivering superior product quality with exceptional dirt-holding capacity and extended service life. 

By reducing the frequency of filter element replacements, this product saves customers significant maintenance costs 

and creates additional operational value through improved equipment uptime.

Engineered for hydraulic and lubrication systems, the P170546 series effectively removes solid particulate contaminants, 

ensuring system cleanliness and protecting sensitive components including pumps, valves, actuators, and servo systems.

 Its robust construction and versatile media options make it suitable for a wide range of industrial applications—from 

heavy metallurgy to precision electronics manufacturing.

2. Technical Specifications

Parameter Specification

Model P170546 (Donaldson compatible)

Working medium Mineral hydraulic oil, phosphate ester fluids, emulsions, water-glycol

Filter media options Glass fiber filter paper (BN), Stainless steel woven mesh (W), Wood pulp filter paper (P), 

Stainless steel sintered mesh (V)

Working pressure 21 bar – 210 bar (300 – 3,000 psi)

Working temperature –30°C to +110°C

Sealing material Fluorocarbon rubber (FKM/Viton) or Nitrile rubber (NBR)

Filtration precision 1μm, 3μm, 6μm, 12μm, 25μm and custom grades

Filtration ratio (β) βₓ ≥ 1000 (≥99.9% efficiency at rated size)

Structural strength ratings 1.0 MPa, 2.0 MPa, 16.0 MPa, 21.0 MPa (model dependent)

Flow direction Outside-in (contaminants captured on exterior surface)

Housing compatibility Full dimensional interchangeability with Donaldson original housings

3. Key Performance Characteristics

3.1 Exceptional Dirt-Holding Capacity

The P170546 element utilizes advanced media technology that significantly increases contaminant storage capacity 

compared to conventional filters. This means:

· Longer service intervals between replacements

· Reduced maintenance labor and downtime costs

· Consistent filtration performance throughout the element's service life

3.2 Extended Service Life

Superior media construction and optimized pleating design ensure that the filter element maintains its structural integrity 

and filtration efficiency over extended operating periods, delivering:

· Up to 2–3× longer service life than standard elements under identical conditions

· Lower total cost of ownership

· Reduced hazardous waste generation from spent elements

3.3 Multi-Media Versatility

Available in four distinct media types to match application requirements:

· Glass fiber (BN): High-efficiency depth filtration, ideal for precision hydraulic systems

· Stainless steel mesh (W): Reusable, washable, high strength for coarse filtration

· Wood pulp (P): Economical, good efficiency for general-purpose applications

· Sintered mesh (V): Superior strength, high-temperature capability, corrosion resistance

3.4 Broad Filtration Precision Range

Available precision grades from 1μm to 25μm accommodate diverse system cleanliness requirements:

· 1–3μm: Servo valves, proportional valves, ultra-precision hydraulics

· 6–12μm: General industrial hydraulics, standard directional valves

· 25μm: Pump inlet protection, coarse straining, high-flow applications

3.5 Beta Ratio ≥ 1000

All P170546 elements achieve a Beta ratio (βₓ) ≥ 1000 for the rated particle size, indicating minimum filtration efficiency 

of 99.9%. This ensures superior contaminant removal and stable oil cleanliness over extended operating periods.

3.6 Robust Structural Integrity

Available in multiple structural strength ratings (1.0–21.0 MPa), the P170546 series withstands:

· System pressure fluctuations and transient spikes

· Cyclic flow fatigue

· High differential pressure conditions without media collapse

4. Application Fields

4.1 Metallurgical Industry

· Hydraulic system filtration for rolling mills and continuous casting machines

· Lubrication system purification in steel and metal processing facilities

· Protection of heavy-duty hydraulic components in high-contamination environments

4.2 Petrochemical Industry

· Separation and recovery of products and intermediates in refining processes

· Liquid purification in chemical production

· Oilfield produced water and natural gas particle removal

· Purification in tape, CD, and photographic film manufacturing

4.3 Textile Industry

· Polyester melt purification and uniform filtration in fiber drawing processes

· Air compressor protection and inlet filtration

· Compressed gas oil-water removal and dehydration

4.4 Electronics & Pharmaceutical Industries

· Reverse osmosis (RO) and deionized water pre-treatment and final filtration

· Washing solution and glucose solution pre-treatment and filtration

· High-purity process fluid purification

4.5 Thermal Power & Nuclear Power

· Gas turbine lubrication and speed control system oil purification

· Boiler lubrication system filtration

· Bypass control system oil cleaning

· Feedwater pump, fan, and dust removal system purification

4.6 Mechanical Processing Equipment

· Lubrication system purification for papermaking machinery

· Mining equipment hydraulic system protection

· Injection molding machine hydraulic filtration

· Compressed air purification for large precision machinery

· Dust recovery and filtration for tobacco processing and spray equipment

4.7 Railway & Power Generation

· Locomotive diesel engine lubricating oil filtration

· Generator bearing oil purification

· Traction system hydraulic protection

4.8 Automotive & Construction Machinery

· Internal combustion engine air, oil, and fuel filtration

· Construction machinery hydraulic filters

· Marine and truck hydraulic, diesel, and water filters

5. Maintenance & Operation Guidelines

1. Differential Pressure Monitoring – Install a differential pressure gauge or indicator on the filter housing. Replace the 

element when the pressure drop reaches the manufacturer's recommended change-out value.

2. Regular Inspection – During scheduled maintenance, inspect seals, housing connections, and the bypass valve (if equipped). 

Replace any degraded components immediately.

3. Element Selection Verification – Confirm that the selected media type, precision grade, and structural strength rating match

 your system's operating conditions.

4. Proper Installation – Handle the element carefully to avoid pleat damage. Ensure correct seating and sealing during

 installation.

5. Storage – Store spare elements in original packaging in a dry, dust-free environment. Follow the "first-in, first-out" inventory 

principle.

6. FAQ (Frequently Asked Questions)

Q1: What makes the Donaldson P170546 filter element different from other hydraulic filters?

A: The P170546 is manufactured with advanced processing technology that delivers exceptional dirt-holding capacity and

 extended service life. This reduces replacement frequency, lowers maintenance costs, and creates additional operational 

value through improved equipment uptime.

Q2: What filtration precision options are available for the P170546 series?

A: Available precision grades include 1μm, 3μm, 6μm, 12μm, 25μm, and custom grades upon request. The choice depends 

on your system's cleanliness requirements and component sensitivity.

Q3: What is the significance of the Beta ratio (βₓ ≥ 1000)?

A: Beta ratio is a measure of filtration efficiency. βₓ = 1000 means the filter captures 99.9% of particles at the rated size 

(x microns). This ensures superior contaminant removal and stable oil cleanliness.

Q4: Can the P170546 be used with phosphate ester hydraulic fluids?

A: Yes, with appropriate seal selection. The standard media is compatible, but please verify seal material 

(FKM is recommended for phosphate esters). Consult our technical team for specific fluid compatibility confirmation.

Q5: How long does a P170546 filter element typically last?

A: Service life varies based on system contamination levels, operating hours, and fluid condition. Under normal conditions, 

the P170546 offers up to 2–3× longer service life than standard elements, typically 6–18 months depending on application.

Q6: Can the stainless steel mesh version be cleaned and reused?

A: Yes. The stainless steel woven mesh (W) and sintered mesh (V) versions are washable and reusable. Use appropriate

 solvent and reverse-flow compressed air for cleaning. Glass fiber (BN) and wood pulp (P) versions are disposable and 

must be replaced.

Q7: What are the available structural strength ratings for this series?

A: The P170546 series is available in 1.0 MPa, 2.0 MPa, 16.0 MPa, and 21.0 MPa structural strength ratings. Select based on your

 system's maximum operating pressure and differential pressure capability.

Q8: What is the temperature range for standard P170546 elements?

A: Standard elements operate from –30°C to +110°C. For higher temperature applications, specialty media and seal materials 

are available. Please specify your temperature requirements when ordering.

Q9: Is the P170546 fully interchangeable with the original Donaldson element?

A: Yes. All dimensional parameters, thread specifications, sealing groove positions, and bypass valve settings are fully

 compatible with original Donaldson filter housings. Direct drop-in replacement requires no mechanical modification.

Q10: What types of fluids are compatible with the P170546?

A: Compatible fluids include mineral hydraulic oils, phosphate ester hydraulic fluids, emulsions, water-glycol fluids, 

and various lubricating oils. For non-standard or aggressive fluids, please consult our technical team.

Q11: How do I know when to replace the P170546 filter element?

A: Replace when the differential pressure reaches the manufacturer's recommended change-out value (typically 2–3× initial

 clean pressure drop), or when the differential pressure indicator signals. Regular oil sampling can also guide replacement 

timing.

Q12: Are these filter elements available for mobile equipment applications?

A: Yes. The P170546 series is widely used in construction machinery, agricultural equipment, marine vessels, and off-highway 

vehicles requiring robust hydraulic filtration.

Q13: What documentation is provided with each filter element?

A: Each element is supplied with a certificate of conformance, dimensional inspection report, and batch traceability. ISO 16889 

multi-pass test reports and material certificates are available upon request.

Q14: Do you offer volume discounts or supply agreements for fleet/plant operators?

A: Yes. We offer volume-based pricing, scheduled delivery programs, and annual supply agreements for large-scale users. 

Contact our sales team to discuss your specific requirements.

Product characteristics