Shanghai Nellway Valve Co., Ltd.

Pneumatic bellows control valve

Pneumatic control valve, Regulating valves

Pneumatic bellows control valve

The Pneumatic Bellows Control Valve is engineered for precise flow regulation. It is suitable for various industrial applications. This valve integrates a robust bellows seal with a diaphragm-type pneumatic actuator. This combination offers reliable performance, superior control, and durability. It is ideal for applications requiring leak-proof operation and accurate flow control.
NameparameterNameparameter
Nominal DiameterDN50-DN500ConnectionFlange(RF,MF,RJ)
Nominal PressurePN10-PN16Drive ModeElectric,Pneumatic,Manual,Hydraulic
Medium Temperature-29-300℃SealingSoft seal/Hard seal
MaterialCarbon steel:A216 WCB;WCC; A105

Stainless steel:304;316;304L;316L

GGG40(GJS-400-15);GGG50(GJS-500-7)

Design StandardsAPI、ANSI、DIN、GB
Working ConditionsChemical; Petroleum; Natural gas; Water; Paper; MetallurgyMediumWater;Gas

Pneumatic bellows control valve Introduction and explanation

Table of Contents

Pneumatic bellows control valve parameter

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Pneumatic Bellows Control Valve Product Introduction

Product Overview:

The Pneumatic Bellows Control Valve is engineered for precise flow regulation. It is suitable for various industrial applications. This valve integrates a robust bellows seal with a diaphragm-type pneumatic actuator. This combination offers reliable performance, superior control, and durability. It is ideal for applications requiring leak-proof operation and accurate flow control.


Key Features:

  1. Diaphragm-Type Pneumatic Actuator:

– Actuator Type: The valve features a diaphragm-type actuator. This actuator is known for its reliability and smooth operation.

– Power Supply: It operates on standard pneumatic pressures. These pressures typically range from 3 to 8 bar (43.5 to 116 psi).

– Control Signals: The actuator is compatible with common control signals. These include 4-20mA and 0-10V, providing precise and responsive control.

– Operating Speed: The stroke speed is adjustable. This allows for flexible operation, offering either rapid or gradual response as needed.

  1. Bellows Seal:

– Leak-Proof Design: The bellows seal ensures a hermetic seal between the valve body and the actuator. This design prevents leakage, making it suitable for hazardous or high-purity fluids.

– Flexible Operation: The bellows design accommodates thermal expansion and contraction. This reduces the risk of seal failure under fluctuating temperature conditions.

– Durability: The bellows are constructed from high-quality materials. These include stainless steel or reinforced elastomers. They are resistant to wear, corrosion, and extreme temperatures.

  1. Robust Construction:

– Material Options: The valve body is available in various materials. These include carbon steel, stainless steel (304, 316), and alloy steel. This ensures compatibility with a wide range of process media.

– Seal Materials: The valve features high-performance sealing materials. These include PTFE, Viton, or metal seals. They provide resistance to corrosion and high temperatures.

– Temperature Range: The valve is designed to operate effectively in temperatures from -40°C to +250°C. This depends on the material selection.

  1. Advanced Features:

– Position Feedback: The valve includes an integrated positioner. This provides real-time feedback, ensuring accurate valve positioning and flow control.

– Manual Override: An optional manual override allows for manual operation. This is in case of pneumatic actuator failure or power loss.

– Fail-Safe Options: The valve is available in both fail-open and fail-closed configurations. These options meet specific safety requirements.


Applications:

The Pneumatic Bellows Control Valve is suitable for a variety of industrial applications. These include:

– Chemical Processing: Ideal for controlling the flow of corrosive or hazardous chemicals. It offers precise leakage prevention.

– Oil and Gas: Regulates flow in oil and gas production and transportation systems. It ensures safety and efficiency.

– Pharmaceuticals: Provides accurate control in pharmaceutical manufacturing processes. This is crucial for purity and leak prevention.

– Food and Beverage: Handles sanitary processes. It delivers reliable flow control in production and processing.


Working Conditions:

– Pressure Range: The valve is suitable for medium to high-pressure applications. It typically handles pressures up to 40 bar (580 psi). Options for higher pressures are also available.

– Temperature Range: It operates effectively in temperatures from -40°C to +250°C. This depends on the materials used.

– Media Compatibility: The valve handles a wide range of media. This includes gases, liquids, and slurries. It is versatile across different industries.


Advantages:

– Leak-Proof Operation: The bellows seal ensures a hermetic seal, preventing leakage. This makes the valve ideal for hazardous or high-purity applications.

– Durability: The robust construction and high-quality materials provide long service life. They ensure reliability in harsh operating conditions.

– Precision Control: The valve offers accurate flow regulation and responsive control. This enhances process efficiency and stability.

– Versatility: The valve is suitable for various industrial applications. It provides a flexible solution for diverse process needs.


Conclusion:

The Pneumatic Bellows Control Valve is a dependable and versatile solution. It is designed for precise flow regulation in demanding industrial applications. The valve features a diaphragm-type pneumatic actuator, advanced bellows seal, and robust construction. It delivers exceptional performance and leak-proof operation. This makes it an excellent choice for industries that require accurate control and reliable performance in challenging environments.

Pneumatic bellows control valve Parameter

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