High-pressure Filter for Petrochemical Hydraulic Station

Product Overview

The high-pressure filter is a core purification device specifically engineered for hydraulic pump stations within the 

petrochemical industry. Designed to withstand the most demanding high-pressure operating conditions, this filter 

serves as the frontline defense against particulate contamination in hydraulic systems. It efficiently captures metallic

 debris generated by pump wear, dust particles ingressed through tank breathing, and oxidative byproducts formed during

 fluid service life—all of which pose significant threats to hydraulic component integrity and system reliability.

In petrochemical production environments, hydraulic pump stations operate under continuous, high-stress conditions 

where even minor contamination can lead to catastrophic component failure, unplanned production stoppages,

 and substantial financial losses. This filter addresses these challenges head-on, providing robust purification that ensures

 hydraulic oil cleanliness meets or exceeds industry standards. By preventing abrasive wear on pumps, valves, and actuators, 

and by maintaining clear flow paths through critical pipelines, the filter safeguards the continuous, safe, and stable 

operation of petrochemical hydraulic systems. Its rugged construction and advanced sealing technologies make it

 particularly well-suited to the harsh, corrosive, and often outdoor environments that characterize petrochemical facilities 

worldwide.

Product Performance Characteristics

The high-pressure filter delivers superior performance across multiple operational dimensions, making it an indispensable 

component in critical hydraulic systems:

(1) Exceptional High-Pressure Resistance

Engineered for the elevated working pressures typical of petrochemical hydraulic pump stations, the filter operates reliably 

without leakage, deformation, or structural compromise. Its high-strength shell and precision-machined sealing surfaces 

ensure integrity even under severe pressure fluctuations and transient spikes, providing uninterrupted protection

 throughout the system's duty cycle.

(2) High Filtration Precision

The advanced filter element design achieves precise particle capture across a carefully controlled micron rating. 

This ensures that even sub-micron and microscopic contaminants are effectively intercepted, maintaining the hydraulic oil 

at the cleanliness level required by sensitive servo-valves, proportional valves, and precision actuators. Consistent filtration 

precision directly translates to extended component life and reduced maintenance interventions.

(3) Substantial Dirt-Holding Capacity

The filter element incorporates a high-capacity media configuration that stores a significant volume of contaminants before 

reaching its differential pressure limit. This large dirt-holding capacity, combined with strong anti-clogging characteristics, 

extends the service interval between element replacements. For plant operators, this translates to reduced consumable costs,

 fewer maintenance work orders, and minimized exposure to hazardous fluid handling.

(4) Low Operating Resistance

Despite its high filtration efficiency, the filter introduces minimal pressure drop across the element. This low operating 

resistance ensures that the hydraulic pump station maintains its designed oil circulation efficiency without unnecessary 

energy loss or reduced flow capacity. The filter is engineered for long-term continuous operation, supporting 24/7 production 

schedules common in petrochemical processing.

Technical Design and Construction

The high-pressure filter incorporates several engineering features that collectively ensure its reliability and longevity in 

petrochemical applications:

Corrosion-Resistant Shell Construction: The filter housing is fabricated from high-strength, anti-corrosion materials specifically 

selected for compatibility with petrochemical media. This robust construction resists chemical attack from hydraulic fluids,

 fire-resistant fluids, and atmospheric corrosive agents, ensuring service life that matches or exceeds the hydraulic system itself.

High-Pressure Sealing System: An advanced sealing configuration, comprising premium elastomeric seals and precision 

metal-to-metal interfaces, provides excellent leak-tight performance. This sealing system withstands the dynamic oil pressure

 pulses and thermal cycling characteristic of high-pressure hydraulic systems, maintaining leak-free operation over extended 

periods.

High-Pressure Wear-Resistant Filter Elements: The filter utilizes premium-grade media that maintains stable filtration 

efficiency even under high-pressure differential conditions. The element construction resists media migration, fiber shedding,

and structural collapse, ensuring that purified oil quality remains consistent throughout the element's service life.

Optional Differential Pressure Alarm Device: For enhanced condition monitoring, the filter can be equipped with a differential

 pressure alarm system. This device provides real-time indication of filter element status, alerting operators when the element 

approaches its clogging threshold. This proactive warning enables timely maintenance scheduling, prevents bypass valve

 activation, and ensures continuous filtration effectiveness.

Application Fields

The high-pressure filter is primarily deployed for oil purification of hydraulic pump stations across the petrochemical sector. 

Specific applications include:

· Petrochemical Plants: Refineries, chemical complexes, and petrochemical processing facilities rely on this filter for hydraulic

 oil and fire-resistant hydraulic fluid purification in critical pump stations.

· Oil Refining Operations: Used in refining process hydraulic systems, including those powering fractionating columns, 

heat exchangers, and reactor control systems.

· Chemical Processing: Suitable for hydraulic systems in chemical reactors, compressors, and material handling equipment.

· Extended Industrial Use: Beyond petrochemical applications, the filter is also well-suited for high-pressure hydraulic systems 

in metallurgical plants, electric power generation facilities, and other heavy industries requiring robust hydraulic fluid 

purification.

Frequently Asked Questions

Q1: What is the typical filtration accuracy of this high-pressure filter?

The filter's accuracy is determined by the installed filter element. Standard configurations offer 3 μm to 200 μm options. 

For petrochemical hydraulic pump station applications, 5 μm to 20 μm glass fiber elements are commonly recommended 

to achieve ISO 4406 cleanliness levels suitable for precision components. Please contact us with your specific cleanliness 

requirements.

Q2: What hydraulic fluids are compatible with this filter?

The filter is compatible with mineral-based hydraulic oils, fire-resistant fluids (including water-glycol and phosphate ester types), 

and synthetic hydraulic fluids. The standard seal materials are suitable for mineral oils and water-glycol fluids. 

For phosphate esters or other aggressive media, please specify when ordering to ensure appropriate seal material selection.

Q3: How often should the filter element be replaced?

Replacement intervals depend on system contamination levels, operating hours, and the filter's dirt-holding capacity.

 If equipped with a differential pressure alarm, replace the element when the alarm indicates the preset ΔP has been reached.

 Without an alarm, we recommend scheduled inspection at 1,000-hour intervals and replacement when differential pressure 

approaches 0.3 MPa above the clean element pressure drop.

Q4: What is the maximum operating pressure for this filter?

The standard filter is designed for a nominal pressure of 31.5 MPa. Higher pressure ratings are available upon request for

 specialized applications.

Q5: Does the filter include a bypass valve?

Yes, the filter is equipped with a bypass valve that opens if the element becomes severely clogged and is not replaced in time. 

This safety feature ensures oil flow continues to the system, preventing pump cavitation or component starvation. However,

 bypass operation indicates that filtration protection has been compromised, and the element should be replaced immediately.

Q6: Can the filter be installed in any orientation?

The filter is designed for vertical pipeline installation with the filter head facing upward. This orientation facilitates proper

 air bleeding, ensures optimal element drainage during maintenance, and simplifies element replacement procedures.

Q7: What environmental conditions can the filter withstand?

The filter operates effectively in ambient temperatures from -20°C to +60°C and fluid temperatures from -10°C to +100°C, 

depending on seal material. The corrosion-resistant housing ensures reliable performance in outdoor, coastal, or chemically

 aggressive petrochemical environments.

Q8: Is the filter element reusable or cleanable?

Glass fiber elements are disposable and should be replaced when saturated. Metal mesh elements may be cleaned and reused

 in some applications, depending on contaminant type and cleaning method. Always inspect cleaned elements for structural

 integrity before reuse.

Q9: How does the differential pressure alarm function?

The alarm continuously monitors the pressure difference between the filter inlet and outlet. As the element captures 

contaminants, this differential pressure gradually increases. When a preset threshold is reached, the alarm provides

 either a visual indicator or electrical signal to alert maintenance personnel that the element requires service.

Q10: Are custom configurations available?

Yes, we offer custom filter configurations including specific filtration ratings, alternative seal materials, special port connections, 

and integrated manifolds. Please contact our engineering team with your application requirements.

For additional technical support, application guidance, or custom solutions, please consult our technical team. Product 

specifications are subject to continuous improvement and may be updated without prior notice.

Scope of Application

It is mainly used for oil purification of hydraulic pump stations in the petrochemical industry, suitable for high-pressure hydraulic systems of various petrochemical plants (such as oil refining and chemical plants), can purify hydraulic oil, fire-resistant hydraulic oil, etc., and can also be used for oil filtration of high-pressure hydraulic systems in metallurgy, electric power and other industries.