Name: China Atos Servo Proportional Valve Suppliers - Yanhui Hydraulic
Brand: Yanhui
SKU: 318508150

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

Product Overview

▔▔

The Atos Servo Proportional Valve represents a high-performance electro-hydraulic control solution combining the dynamic response of a traditional servo valve with the rugged reliability and flexibility of a proportional valve. Specifically engineered for closed-loop systems, the Atos DLHZO and DHZO series (direct and two-stage piloted proportional valves with integrated electronics) provide exceptional precision in regulating hydraulic pressure and flow.

Key Advantages

▔▔

High-Dynamic Response: Designed with optimized spool geometries and high-speed proportional solenoids to achieve rapid response times suitable for closed-loop positioning and force regulation.
Integrated Digital Electronics: Features onboard electronics (OBE) factory-set and tuned for optimal performance, minimizing wiring complexity and external noise interference.
Advanced Feedback Integration: Incorporates LVDT linear transducers for precise spool position feedback, ensuring high repeatability and minimal hysteresis.
Robust Industrial Reliability: Built to withstand harsh industrial environments while maintaining strict contamination tolerance compared to traditional nozzle-flapper servo valves.

Technical Specifications

▔▔

Parameter Category	Specification / Details
Max Operating Pressure	Up to 350 bar (5000 psi) depending on the specific model series
Rated Flow Range	From 4 L/min up to 160 L/min
Operating Temperature Range	-20°C to +70°C (Standard mineral oils)
Viscosity Range	10cSt to 100cSt ( permissible range 2.8cSt to 500cSt )
Hysteresis	< 0.1% to < 0.5% of max rated flow (depending on closed-loop configuration)
Step Response Time ($0 \to 100\%$)	10ms to 35ms depending on valve size and direct vs. piloted design
Filtration Requirement	ISO 4406 class $18/16/13$ or better

Configuration Options

▔▔

Valve Structure: Direct-operated spool type with linear transducer (DLHZO series) or two-stage piloted type for higher flow capacities (DHZO / HZO series).
Control Modes: Available with integrated digital electronics supporting analog reference signals (0-10V, 4-20mA) or fieldbus communication protocols (CANopen, EtherCAT, Profibus).
Feedback Type: Internal LVDT electrical position feedback for precise spool monitoring and closed-loop control.
Interface & Mounting: Standard ISO 4401 subplate mounting interfaces (CETOP sizes 06 / NG6, 10 / NG10, and 16 / NG16).
Electrical Configuration: Standard 7-pin or 12-pin Master connectors for power supply, reference signals, and fault diagnostics.

Key Materials and Components

▔▔

To guarantee long operational life, pressure resistance, and fluid compatibility, key internal components utilize specialized materials:

Spool and Sleeve: Hardened, ground, and matched alloy steel providing high wear resistance, minimal leakage, and thermal stability.
Valve Body: High-strength ductile iron or forged aluminum casting designed to handle high fatigue pressures up to 350 bar without micro-cracking.
Seals: FKM (Fluorocarbon / Viton) seals as standard, ensuring excellent compatibility with mineral oils (HL, HLP, HVLP) and synthetic hydraulic fluids, with high resistance to elevated temperatures.
Solenoid Coils: Encapsulated copper windings with high thermal insulation class (H-class) for continuous duty under extreme load cycles.

Packaging and Transport Protection

▔▔

Individual Protection: Each valve is sealed in a heavy-duty anti-static, moisture-proof plastic bag to prevent oxidation and dust ingress.
Shock Absorption: Wrapped in custom-molded high-density EPE foam or industrial corrugated inserts to absorb mechanical shocks during transit.
Secure Fastening: Packed in sturdy double-walled corrugated cardboard boxes or custom wooden crates for international shipments.
Batch Packaging: Multi-unit orders are palletized, shrink-wrapped, and clearly labeled with part numbers, batch codes, and handling warnings.

Applications

▔▔

Injection Molding Machines: Precise injection speed and mold clamping pressure control to eliminate flash and part defects.
Metal Die Casting Machinery: High-dynamic shot control and plunger velocity regulation for flawless structural castings.
Metallurgical & Rolling Mills: Hydraulic position and force regulation for roll gap control and tension stands.
Bending & Press Brakes: Synchronized multi-axis ram position control ensuring high bending accuracy and repeatability.
Simulators and Test Rigs: High-frequency vibration and fatigue testing equipment requiring ultra-fast response loops.

Related Models

▔▔

Series	Model Designation	Description / Mounting Size
Direct Operated	DLHZO-T-040-T10/40	NG6 interface, integrated electronics, fast response
Direct Operated	DLHZO-TE-060-T70	NG6 interface, advanced digital controls, high flow
Two-Stage Piloted	DHZO-A-071-S5	NG10 interface, high flow capacity, proportional control
Two-Stage Piloted	HZO-5	NG16 high-flow industrial servo proportional valve

FAQ

▔▔

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

A: Check the complete alphanumeric code printed on the valve's nameplate. If the label is worn, provide us with the machine manufacturer, valve mounting size (NG6/NG10), electrical connector type, and a photo of the unit.

Q2: Can I use synthetic or fire-resistant hydraulic fluids?

A: Yes, standard FKM seals support mineral oils and select synthetic fluids. For specialized water-glycol or phosphate ester fluids, please specify your fluid type during inquiry so we can supply compatible seal options.