SZU-A SQU-A SWU-A Duplex Return Filter

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Product details

SZU-A SQU-A SWU-A Duplex Return Filter

Product Overview

SZU-A SQU-A SWU-A Duplex Return Filter is a high-performance FILTER specially designed for continuous operation hydraulic system. This duplex FILTER consists of two filter housings and a 2-position 6-way directional valve. When one filter element is blocked, users can switch the valve to activate the standby filter cartridge without shutting down the Machine. It effectively traps solid contaminants, metal particles and rubber debris in return oil, protecting hydraulic pumps, valves and other key components inside the hydraulic system, and extending the service life of the whole Machine.

Technical Specifications

- Series: SZU-A / SQU-A / SWU-A Duplex Return Filter

- Rated flow: 25 ~ 400 L/min

- Filtration precision: 1μm, 3μm, 5μm, 10μm, 20μm, 30μm

- Max working pressure: 1.6 MPa

- Working medium: Mineral hydraulic oil, water-glycol, phosphate ester fluid

- Built-in parts: Bypass valve, differential pressure contamination transmitter, balance valve

- Material: Carbon steel housing, glass fiber / paper filter media

Working Principle

While the Machine keeps running, return oil flows into the hydraulic system pipeline and passes through this FILTER. The directional valve controls one filter chamber in service and the other on standby. Once the filter element is clogged and differential pressure rises, operators rotate the switching valve. The standby filter starts working immediately, and the contaminated element can be replaced safely without stopping the hydraulic system. The built-in bypass valve opens automatically to avoid oil starvation and component damage when pressure exceeds the preset value.

Core Advantages

1. Duplex structure supports online element replacement, perfect for non-stop production Machine.

2. Equipped with differential pressure alarm indicator, reminding maintenance timely for the FILTER.

3. Wide flow and precision options to meet different cleanliness requirements of hydraulic system.

4. Compact and reliable structure, low pressure drop, large dirt holding capacity.

5. Easy installation and simple operation, convenient for daily maintenance of the Machine.

Application Range

Widely used in metallurgy equipment, mining Machine, injection molding machines, construction machinery and other industrial facilities. As a critical return line FILTER, it stabilizes oil cleanliness and safeguards long-term reliable operation of the hydraulic system.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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Main Product: hydraulic motor , gear box, hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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