Name: China Atos Relief Valve Suppliers - Discount Atos Relief Valve for Sale - Yanhui Hydraulic
Brand: Yanhui
SKU: 317900001

Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of atos relief valve in China. We warmly welcome you to wholesale bulk atos relief valve for sale here from our factory. If you have any enquiry about pricelist and quotation, please feel free to email us.

Product Overview

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The Atos Relief Valve is a high-performance proportional and modular pressure control valve engineered for precision industrial hydraulics. Positioned as a core regulating solution within modern electro-hydraulic systems, it is designed to deliver rapid dynamic response and superior pressure stability.

Key Advantages

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Series and Type: Atos proportional pressure relief valves (such as the E-ME-AC and AGAM/ARE series) combine robust mechanical spool architecture with advanced proportional solenoids.
Core Control Function: Delivers precise, closed-loop or open-loop continuous pressure regulation proportional to the input electrical reference signal.
Precision Hydraulic Scenarios: Ideally suited for demanding applications requiring high repeatability, low hysteresis, and fine pressure tuning under fluctuating load conditions, such as plastic injection molding machines, metal forming presses, and heavy-duty test rigs.

Technical Specifications

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Technical Parameter	Specification / Range
Max Operating Pressure	Up to 350 bar (5000 psi) depending on model series
Rated Flow Capacity	From 10 L/min up to 500 L/min
Operating Temperature Range	-20 C to +70 C (fluid temperature)
Fluid Viscosity Range	10 to 400 mm2/s (optimal 20 to 100 mm2/s)
Hysteresis	< 1% of max pressure (for proportional models)
Step Response Time	30 ms to 80 ms (depending on valve size and electronics)
Filtration Requirement	ISO 4406 class 20/18/15 or better (recommended 25 micron absolute or finer)

Configuration Options

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Structure: Available in direct-operated, pilot-operated, modular (sandwich plate), subplate mounting, and threaded inline configurations.
Control Type: Manual adjustment via micrometric screw, proportional solenoid control with integrated or external digital drivers, and remote pressure control ports.
Feedback Type: Open-loop control or closed-loop control with integrated inductive LVDT position transducer for ultra-precise spool positioning.
Rated Flow: Multiple flow size options ranging from NG6 (CETOP 3), NG10 (CETOP 5), NG16 (CETOP 7), to NG25 (CETOP 10).
Interface / Mounting Form: ISO standard subplate mounting interfaces (ISO 6264, ISO 5781) and threaded port configurations (BSP or SAE).
Electrical Configuration: Standard connectors (IP65/IP67), M12 plug-in connections, and digital fieldbus communication interfaces (CANopen, PROFIBUS DP, EtherCAT) for advanced proportional variants.

Key Materials and Components

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Valve Body: High-strength spheroidal graphite cast iron or forged high-grade steel, designed to withstand high fatigue limits under continuous peak pressures.
Spool and Sleeve: Hardened, ground, and precision-matched alloy steel to minimize internal leakage and resist wear during high-frequency cycling.
Seals: Fluorocarbon elastomer (FKM / Viton) as standard, offering superior resistance to high temperatures and aggressive synthetic or mineral hydraulic oils.
Solenoid Tubes & Springs: Corrosion-resistant stainless steel and high-fatigue spring steel ensuring consistent opening and closing characteristics over millions of cycles.

Packaging and Transport Protection

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Industrial Packaging: Individually sealed in heavy-duty polyethylene bags to prevent moisture ingress and dust contamination during transit and storage.
Moisture Protection: Inclusion of industrial-grade desiccants inside the packaging to absorb residual humidity.
Shock Absorption: Customized high-density molded foam inserts or corrugated cardboard dividers securely immobilize each valve to prevent mechanical shock and port thread damage.
Batch Packaging: Packed into robust, reinforced double-wall export cartons or fumigation-free wooden crates for bulk shipments, clearly labeled with part numbers, batch codes, and handling instructions.

Applications

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Injection Molding Machines: Used in clamp and injection circuits to provide precise clamping pressure control and prevent mold damage during high-speed closing.
Metal Stamping and Hydraulic Presses: Installed in main pump circuits to maintain constant holding tonnage and protect structural components from pressure spikes.
Metallurgical Equipment and Steel Mills: Deployed in roll balance and shear control circuits requiring high reliability and continuous operation under heavy shock loads.
Industrial Test Rigs and Simulation Benches: Utilized in closed-loop loading systems to dynamically simulate fluctuating load profiles and pressure curves with high fidelity.

Related Models

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Model Series	Description & Mounting Size
ADAO Series	Direct-operated modular and subplate relief valves
AGAM Series	Pilot-operated pressure relief valves (ISO 6264)
AGMZO Series	Proportional pressure relief valves with integral digital driver
E-MI-AC Series	Electronic driver cards for proportional relief valves
HM / KM Series	Modular sandwich relief valves for stack configurations

FAQ

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Q1: How do I confirm the exact replacement model for my existing Atos relief valve?

A1: Please check the complete model code stamped on the valve nameplate. If the nameplate is worn, provide us with the machine manufacturer, valve mounting size (e.g., NG10), voltage, and port configuration photos.

Q2: What is the required oil filtration standard for these valves?

A2: To ensure maximum service life and prevent spool sticking, use mineral-based hydraulic oils adhering to ISO 4406 class 20/18/15 cleanliness levels or better, utilizing a 25-micron (or finer) absolute filter.