I. Product Overview

II. Full Model Code Explanation

1. 859 – Basic Product Series

   859 is the base code of the manufacturer’s standard precision control valve series, which defines the nominal bore, flow channel structure, reference mounting dimensions, basic valve framework and applicable fluid medium types. It acts as the basic hardware platform for all products of this model series. All valves in the same series share identical mounting dimensions, flow layout and basic structure, delivering excellent spare part interchangeability.
2. A – Valve Structural Type

   It represents a straight-through standard flow channel with single-acting drive structure. The straight flow channel causes no throttling distortion or eccentric irregular structure, featuring low medium flow resistance and high flow stability. The single-acting drive mode provides stable response and low failure rate, suitable for conventional forward medium on-off, pressure stabilization and throttling control logic, while reverse medium control is not supported.
3. P0 – Rated Pressure Class

   P0 refers to the manufacturer’s baseline normal pressure rating, applicable to standard industrial normal-pressure working conditions. Its rated operating pressure covers the standard range of conventional fluid control systems with no high-pressure reinforcement or negative-pressure dedicated customization. Designed for continuous operation under normal temperature and pressure, it meets most general automatic fluid control requirements.
4. N-N-N-N – Optional Extended Modules (No Customization)

   The four N (None) codes respectively indicate: no special modified sealing customization, no explosion-proof structure option, no manual emergency regulator and no external sensor monitoring module. The valve adopts purely standard basic configuration with streamlined structure and fewer failure points, suitable for basic control scenarios without extended functions.
5. H – Valve Material and Protection Class

   Adopting an exclusive anti-corrosion and wear-resistant material formula, the valve base material undergoes dual treatments of hardening and anti-corrosion passivation, featuring a dense pore-free surface. It can resist slightly corrosive media, humid workshop dust and long-term medium erosion. Compared with ordinary standard valves, its anti-aging, anti-abrasion and anti-rust performance is greatly enhanced, enabling long-term stable operation in mildly corrosive and dusty industrial environments.
6. N-N – Signal Feedback Option (Not Equipped)

   The dual N codes mean no valve position limit switch and no real-time flow monitoring output. The valve only performs physical on-off and regulating control without electrical signal return function, applicable to independent control loops that require no upper computer monitoring or status feedback.
7. C – Sealing System Class

   Class C high-precision industrial sealing system adopts wear-resistant and anti-aging composite sealing components, supporting static zero leakage and low dynamic wear operation with excellent rebound compensation performance. It resists deformation and leakage under long-term frequent switching and medium scouring, strictly complying with industrial zero-leakage process standards for fluid control, and compatible with gas, clean water and other conventional industrial fluid media.
8. N-N – High/Low Temperature Customization (No Customization)

   The dual N codes indicate no high-temperature reinforcement or low-temperature anti-freezing customization. This is a standard normal-temperature version adapting to regular constant-temperature workshop environments, tolerating normal equipment temperature fluctuations, and not applicable to extreme working conditions with ultra-high temperature, ultra-low temperature or sharp temperature changes.
9. M-M – Core Control Mode

   Dual M stands for premium core function supporting dual control modes: high-frequency pulse on-off control and continuous proportional flow regulation. It realizes intermittent control through high-speed frequent switching as well as stepless precise regulation of flow and pressure, featuring high control accuracy and favorable response linearity. It satisfies both switching control and precise regulation process requirements, applicable to diversified fluid processes.
10. P – Pipeline Connection Interface

    Standard general industrial threaded connection interface complying with industry universal standards, compatible with conventional pipeline fittings, connectors and pipes on the market. It enables convenient installation and strong interchangeability without customized pipe fittings, lowering on-site assembly and spare part costs.
11. T – Temperature Resistance Configuration

    Class T standard temperature resistance configuration adapts to conventional medium and normal temperature operating ranges in industry. It tolerates normal equipment temperature rise and ambient temperature variation with stable thermal performance, free from defects such as high-temperature softening and low-temperature hardening, suitable for regular production workshop conditions.
12. C – Valve Protection Structure

    The whole valve adopts dust-proof and moisture-proof protection design. Sealed protection is applied to the coil, wiring cavity and valve matching parts to effectively block the intrusion of workshop dust and moisture, preventing internal iron cores, springs and sealing parts from rusting, jamming and failure, suitable for open indoor industrial production environments.
13. 1E – Electrical Coil Specification

    Type 1E general standard solenoid coil adapts to common industrial voltage specifications, featuring moderate power consumption, standard switching response speed and stable coil temperature rise. Equipped with basic overcurrent and overheat protection, it is highly compatible with conventional industrial control power supply systems with no special customization for high or low voltage.
14. M-N – Mounting and Auxiliary Accessories

    M: Equipped with original standard fixed mounting bracket, supporting floor-mounted, wall-mounted and DIN rail installation with strong adaptability;

    N: No external auxiliary accessories such as filter, pressure regulator and silencer are included. It is supplied as a standalone standard valve unit, and auxiliary components can be selected according to on-site working conditions.
15. B-N – Electrical Wiring Method

    Type B standard terminal wiring structure uses conventional electrical control terminals with standardized wiring, reliable fastening and stable contact;

    N: No dedicated waterproof junction box is configured, suitable for dry indoor electrical control environments free from water splashing and conforming to general industrial wiring standards.
16. 043X – Manufacturer Exclusive Traceability Custom Code

    This unique four-digit batch code serves as the sole identity mark of the valve, recording production batch, assembly process, minor non-standard adaptation parameters and quality inspection batch information. It is used for accurate matching of original spare parts, equipment traceability, fault comparison and maintenance ledger registration, acting as the core unique code to distinguish general valves of the same series.

III. Technical Specifications

IV. Product Functions and Features

1. Dual-mode Precise Control for Multi-process Requirements

   Combining high-frequency switching and proportional regulation functions, it realizes frequent intermittent on-off control for automated production lines as well as stepless precise regulation of medium flow and pressure. It delivers high operational linearity and low control error, well suited for refined fluid process technologies.
2. Corrosion and Wear Resistant Body with High Operational Stability

   Equipped with Class H reinforced valve material and high-precision sealing components, it withstands long-term medium erosion, slight corrosion, dusty and humid environments, avoiding rust, abrasion and sealing leakage. With a low overall failure rate, it supports 24/7 continuous mass production of equipment.
3. Zero-leakage Sealing for High Process Safety

   The dedicated Class C sealing system features excellent rebound compensation and wear resistance, ensuring no leakage under static shutdown and no pressure relief during dynamic operation. It thoroughly eliminates process abnormalities, equipment contamination and safety hazards caused by medium leakage, complying with industrial fluid sealing regulations.
4. Strong Universal Compatibility for Convenient Spare Part Replacement

   With standard flow channels, universal interfaces and general electrical specifications, it can directly replace old valves of the same specification without pipeline or wiring modification, compatible with most conventional industrial fluid control systems, featuring low maintenance cost and excellent interchangeability.
5. Streamlined and Stable Structure with Low Failure Rate

   Free of redundant extended modules, it has a simplified structure and fewer fault points. Core components including coils, springs and sealing parts deliver stable performance with strong anti-interference and anti-aging capacity, avoiding jamming and misoperation during long-term operation and ensuring high equipment reliability.

V. Applicable Working Conditions and Application Scenarios

1. On-off, pressure stabilization and throttling control of pneumatic control systems for industrial automated production lines;
2. Transportation and precise regulation of conventional clean water, compressed air and neutral industrial fluids;
3. Auxiliary process fluid control and refined medium flow regulation for production equipment;
4. Indoor industrial operating environments under normal temperature and pressure with dust and humidity;
5. Fault replacement of same-model valves for old equipment and spare part renewal during annual maintenance;
6. General independent fluid control loops requiring no status feedback and no explosion-proof protection.