Pneumatic angle control valve

Pneumatic control valve is a high-precision automatic control valve driven by pneumatic actuator, widely used in petroleum, chemical, electric power, metallurgy, pharmaceutical and environmental protection and other working conditions. The valve is suitable for water, steam, gas, oil and various corrosive media, with excellent corrosion resistance and sealing performance. Pneumatic control valves drive the actuator through pneumatic pressure to achieve precise adjustment of the spool, control flow, pressure and temperature, fast response speed, stable control, suitable for complex automation control systems. The advantages of the product include compact structure, high adjustment precision, long life, easy maintenance, and a wide range of adaptability. Pneumatic control valves support a variety of control signal input, easy to integrate with DCS, PLC system to realize remote intelligent control. Its efficient and stable performance effectively improves the safety and automation level of industrial production process, and is an indispensable and important control equipment for modern industrial piping system.

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products

Pneumatic angle control valve

Model: ZMAS, ZMBS

Subtitle：Pneumatic 90 degree control valve

The Pneumatic Angle Valve is a high performance flow control solution designed for the precise regulation of fluids in high pressure differential and corrosive applications. The valve features a compact angle body design and diaphragm-type pneumatic actuator to ensure reliable operation in harsh environments such as steam systems, power plants and chemical processing units. Its unique geometry...

Tags:Flow Control Valve

Classification:Pneumatic Control Valve

Working conditions:chemical plant, power plants, petrochemical industry

Product Overview

The Pneumatic Angle Valve is a high performance flow control solution designed for the precise regulation of fluids in high pressure differential and corrosive applications. The valve's compact angle body design and diaphragm-type pneumatic actuator ensure reliable operation in harsh environments such as steam systems, power plants and chemical processing units. Its unique geometry minimizes turbulence and corrosion, making it ideal for applications with high differential pressure (ΔP) and particulate media.

Applicable working conditions

Steam system: High pressure steam depressurization and desuperheating.

Power generation: feedwater control and turbine bypass.

Chemical: Corrosive slurry control and abrasive media handling.

Oil and gas: throttle applications in wellhead control.

Main characteristics

Pneumatic Thin Film Actuators
Type: spring return (fail-safe) or double acting.
Gas source: 0.2-0.6 MPa (30-90 psi), response time <3 seconds.
Ex approval: ATEX II 2G Ex d IIC T6 / IECEx (Zone 1 compliant).
Diaphragm material: EPDM, Buna-N or Viton (temperature range: -40°C to 150°C).

Angle valve design
Valve Body Geometry: 90° angle design reduces turbulence and erosion.
High sealing performance: ANSI Class IV (standard) / Class VI (optional).
Pressure Drop Handling: For pressure drops up to 15 MPa.

Flow Rate Characteristics
Valve insert options: multi-stage anti-cavitation, parabolic or standard inserts.
Flow coefficient (Cv): 5.6-320 (DN20-DN150).
Customizable flow curves: tailored to specific process requirements.

Materials and Durability
Valve body materials: carbon steel (WCB), 316L stainless steel (CF8M), duplex stainless steel (UNS S32205).
Valve insert material: Stellite alloy 6, tungsten carbide, or ceramic coating.
Seals: graphite, PTFE or metal bellows (-196°C to 550°C).

compatibility
Signal input: 4-20 mA, 0.2-1.0 bar pneumatic signal.
Communication protocol: HART 7 / Modbus RTU.
Accessories: positioners, solenoid valves, limit switches.

Comparison with Globe Control Valves

specificities	Pneumatic Angle Adjustment Valve	Shut-off control valves
pressure drop	Handles pressure drops up to 15 MPa	Pressure drop limited to ≤6.9 MPa
corrosion resistance	High (90° Runner)	Medium (S-shaped runner path)
space occupied	Compact (space saving)	Larger (need to run in a straight line)
safeguard	Simpler (top entry design)	More complex (inline design)

Selection Guide

High differential pressure: Select multi-stage anti-cavitation valve internals.

Corrosive media: Select tungsten carbide or ceramic valve internals.

High Cycle: Rotary seat design with over 100,000 cycles.

Cryogenic applications: Extended bonnet for liquefied natural gas (LNG) applications.

Medium of use

petroleum, Water/hot water, oils, Air (compressed air), vapor

working condition

chemical plant, power plants, petrochemical industry

summarize

Designed for high-pressure drop and corrosive applications, pneumatically actuated angle valves provide superior performance in the steam, power and chemical industries. Its compact design, corrosion-resistant internals and explosion-proof certification make it a reliable choice for critical flow control tasks. With optional IoT connectivity and an extended 5-year warranty, it ensures long-term operational efficiency and cost savings.

Product Parameters

Nominal diameter	DN20-DN150 (¾"-6")
Nominal pressure	PN25-PN100 (Class 150-600)
Applicable temperature	-40°C to 150°C (diaphragm) / -196°C to 550°C (body)
leakage rate	ANSI Class IV (standard) / Class VI (optional)
Supply pressure	0.2-0.6 MPa (30-90 psi)
response time	<3 seconds
Valve Material	WCB, 316L SS (CF8M), duplex stainless steel (UNS S32205)
Valve material	Stellite 6, tungsten carbide, ceramic coating
sealing material	Graphite, PTFE, metal bellows