Pneumatic Piston Pressure Reducing & Noise Reduction Angle Control Valve

Engineered for severe pressure-reduction and flow-control duties, the Pneumatic Piston Pressure Reducing & Noise Reduction Angle Control Valve is designed to manage high differential pressure while maintaining stable downstream conditions and controlled noise levels. Its angle-pattern body provides an efficient flow arrangement for pressure reduction, while the pneumatic piston actuator delivers strong, responsive positioning for demanding process applications.

A specialized multi-stage pressure-reducing and noise-attenuating trim dissipates excessive fluid energy progressively, helping limit cavitation, vibration, velocity, and aerodynamic or hydrodynamic noise. The valve is particularly suited to high-pressure steam, gas, water, and other process services where conventional control valves may experience excessive noise, vibration, or trim damage.

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Technical Specifications

Parameter	Specification
Valve Type	Angle Pressure Reducing Control Valve
Actuator Type	Pneumatic Piston Actuator
Pressure Reduction Stage	Multi-stage Throttling Design
Size Range	DN50-DN800
Pressure Rating	PN16-PN420
Differential Pressure	Up to 20 MPa
Body Material	WCB, WC6, WC9, CF8M
Trim Design	Anti-Cavitation Multi-hole Cage Trim
Noise Level	≤85 dB(A)
Leakage Class	ANSI Class IV-VI
Medium	Steam, Gas, Liquid
Application	Power Plant, Petrochemical, Oil & Gas

Features & Benefits

Pressure-Reducing Angle Body

The angled flow path provides a favorable configuration for handling high pressure differentials and simplifying demanding piping arrangements.

Multi-Stage Pressure Reduction

Progressive pressure drop across multiple stages reduces fluid velocity and distributes energy dissipation more evenly through the valve.

Noise Reduction Trim

Specialized internal passages break up high-energy flow and reduce turbulence-related noise in liquid and gas services.

Pneumatic Piston Actuator

Provides high output force, rapid response, and reliable positioning for large valves and high differential-pressure applications.

Cavitation Control

Pressure management across the trim helps keep local pressure conditions within a controlled range, reducing the risk of cavitation and associated damage.

Reduced Vibration

Controlled flow velocity and staged pressure reduction help minimize mechanical vibration and improve downstream system stability.

High Differential Pressure Capability

Engineered trim and actuator combinations are suitable for substantial pressure-reduction duties without compromising controllability.

Wear-Resistant Trim Options

Hardened and specialized materials can be selected to withstand high velocity, erosion, flashing, and demanding process media.

Stable Downstream Pressure

Precise actuator positioning and characterized trim provide consistent regulation of downstream pressure and process flow.

Suitable for Severe Process Services

Ideal for steam pressure reduction, gas letdown, boiler systems, power generation, petrochemical plants, and other applications where pressure, noise, and flow control must be managed simultaneously.

Testing Equipment

-196°C Cryogenic Liquid Nitrogen Test System

Simulates ultra-low-temperature operating conditions to verify valve sealing performance and reliability for cryogenic applications.

Brinell, Rockwell & Vickers Hardness Tester

Ensures material hardness meets international standards for strength, durability, and long-term performance.

Large-Scale Coordinate Measuring Machine (CMM)

Provides high-precision dimensional inspection to ensure machining accuracy and product consistency.

Valve Life Cycle Testing System

Evaluates valve durability and operational reliability through repeated opening and closing cycle tests.

High & Low Temperature Test Chamber

Verifies valve performance and stability under extreme temperature conditions.

High Temperature Aging Test Chamber

Assesses long-term material stability and product reliability under continuous high-temperature exposure.

Desktop SPECTRO Optical Emission Spectrometer (Germany)

Performs rapid and accurate material composition analysis to ensure full material traceability and compliance.

Certification and Testing

Our engineering team evaluates these factors to ensure long-term reliability and regulatory compliance.

ISO9001:2015

Environmental Management System Certification

Occupational Health & Safety Management System Certification

Certificate of Quality System Approval

ScheduleTo Certificate No HPiVS-iP1001-062-Q-10-00

CEPTUфNKAT COOTBETCTBNа

EAC

Certificate of Authority to use the Official APl Monogram

ISO 15848－1 QUALIFICATION CERTIFICATE

Test Report

FAQ

Q What is a control valve used for?

Control valves automatically regulate flow, pressure, temperature, and liquid level to maintain stable and efficient process operation.

Q How does a control valve work?

A control valve receives signals from a controller and adjusts the valve opening through an actuator to achieve the required process conditions.

Q What actuator types are available?

Control valves can be equipped with pneumatic, electric, or hydraulic actuators, depending on the application requirements.

Q How do I select the right control valve?

Valve selection depends on process media, flow rate, pressure, temperature, valve size, and the required control accuracy.

Q What is the difference between a control valve and an on/off valve?

An on/off valve is designed for isolation, while a control valve continuously modulates flow to maintain precise process parameters.

Q Which industries commonly use control valves?

Control valves are widely used in chemical processing, oil & gas, LNG, power generation, pharmaceutical manufacturing, food processing, and industrial automation systems.