Thin film pneumatic cage regulating valve HPG-16C

1、 Product Overview

The thin film pneumatic cage regulating valve HPG-16C is a high-performance flow regulating equipment developed by Fouten Flow Control (Jiangsu) Co., Ltd. for industries such as petrochemicals, power, and metallurgy. This valve adopts a cage type valve core structure, which achieves uniform throttling through a porous cage cylinder, effectively reducing cavitation and noise, and is suitable for precise adjustment and control under high pressure difference and high flow conditions. Equipped with a thin film pneumatic actuator, it has sensitive response and smooth action, and can achieve continuous proportional adjustment of medium flow rate, pressure or liquid level.

2、 Structural form and working principle

The HPG-16C type diaphragm pneumatic cage regulating valve consists of a straight through or angular valve body, cage valve core assembly, valve seat, diaphragm actuator, locator, and accessories. The cage valve core adopts a symmetrical porous structure, which forms a uniform pressure drop when the medium flows through the cage cylinder, improves the flow field distribution, and reduces vibration and noise. The thin film actuator receives control signals or gas source pressure from 4-20mA, drives the valve stem to move the cage valve core up and down, changes the flow area, and achieves proportional adjustment. Can be equipped with an intelligent locator, supporting split range control, feature correction, and remote communication.

3、 Main technical parameters

Model: HPG-16C; Specification and caliber: DN25-DN500; Pressure level: PN1.6-PN6.4MPa (Class150-Class300 optional); Valve body material: cast steel WCB, stainless steel 304/316/316L; Valve core/cage: stainless steel+surface hardening treatment; Leakage level: hard seal IV level, soft seal VI level; Applicable media: water, steam, oil, weak acids and bases, and general industrial gases; Medium temperature: - 20℃ to+450℃ (depending on the material and seal); Connection method: flange type (GB/T, HG/T, ANSI, DIN); Drive mode: thin film pneumatic, air source 0.4-0.7MPa; Control mode: 4-20mA, 0-10V or switch quantity, can be equipped with valve positioner, filter pressure reducing valve, solenoid valve, etc.

4、 Product Features

The cage structure has uniform pressure drop and good anti cavitation performance, suitable for high-pressure differential working conditions; Porous cage can achieve equal percentage or linear flow characteristics; The membrane actuator has a compact structure, stable thrust output, and high adjustment accuracy; The valve core component can be extracted as a whole for easy maintenance and repair; The stuffing box and guiding structure have been optimized, and the control indicators for external and internal leakage meet industry standards; Support handwheel mechanism and fault self maintenance configuration to enhance system safety redundancy.

5、 Applicable working conditions and industries

Widely used in petrochemical distillation, catalysis, hydrogenation units, power plant boiler temperature and pressure reduction systems, metallurgical blast furnace gas and hot blast furnace pipelines, municipal heating and HVAC water systems, as well as pharmaceutical, food, paper and other applications that require precise flow regulation. For media containing particles and high viscosity, it is recommended to specify the operating conditions when selecting, in order to configure hardened valve cores or expand cage hole structures.

6、 Material and Manufacturing Standards

The valve body and internal components are made of materials selected and manufactured according to standards such as GB/T12224 and HG/T20592. The pressure parts undergo spectral testing and non-destructive testing to ensure batch consistency. The filling material adopts flexible graphite or PTFE+V combination structure, which is suitable for sealing requirements under frequent adjustment conditions. The actuator diaphragm is made of oil resistant rubber or fluororubber, and the spring and push rod are treated with surface anti-corrosion to adapt to humid and slightly corrosive environments. Before leaving the factory, each valve undergoes shell strength, sealing, and action tests, and is accompanied by a product certificate and inspection report.

7、 Selection and Installation Instructions

Selection requires providing information such as medium name, temperature, pressure, flow range, allowable pressure drop, pipeline diameter and connection standards, control signal type, etc. During installation, attention should be paid to the flow direction identification of the medium, and the actuator should be easy to maintain and leave sufficient space; The gas source needs to be dried and filtered, and the locator needs to complete zero and range calibration according to the instructions. For high-temperature steam or low-temperature media, it is recommended to install extended valve covers or cold insulation structures to reduce heat loss and condensation risks. Fouten Flow Control (Jiangsu) Co., Ltd. can provide calculation sheets, structural diagrams, and complete accessory configuration schemes based on operating conditions to ensure stable operation of HPG-16C in the target system.