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Pneumatic Regulating V-Type Ball Valve

Pneumatic Regulating V-Type Ball Valve

Working Principle

1. The ball core has a V-shaped notch, and the valve stem drives the ball to rotate 0-90°;

2. A wedge-shaped throttling channel is formed between the V-shaped notch and the valve seat. As the rotation angle changes, the flow cross-sectional area changes synchronously;

3. When paired with a pneumatic valve positioner, it receives 4-20mA analog signals to precisely control the opening degree, achieving continuous regulation of pressure, flow rate, and liquid level;

4. When closed, the V-shaped notch fits tightly against the valve seat, achieving reliable shut-off.
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Product Description

Core Structural Features

 

1. V-Shaped Shear Structure: The V-shaped notch provides a cutting edge effect, effectively shearing fibers, paper scraps, and fine solid particles. It prevents clogging and scaling, making it suitable for solid-liquid mixtures.

2. Excellent Regulation Characteristics: It features inherent equal percentage flow characteristics, ensuring high regulation accuracy, stable control, and strong regulation stability under load changes.

3. High-Performance Hard Seal: The valve seat is made of hard alloy, coated with tungsten carbide/STL/NI60, etc., offering wear resistance, high temperature resistance, and erosion resistance. Custom-made bidirectional seals with high sealing levels are available to meet demanding shut-off requirements.

4. Diverse Valve Body Materials:
Standard: WCB carbon steel, 304/316L stainless steel;
Special: Duplex steel, Hastelloy, fluoropolymer-lined corrosion-resistant versions.

5. Pneumatic Drive Configuration: Single-acting/double-acting pneumatic actuators, paired with:
valve positioners, solenoid valves, filter pressure reducing valves, limit switches, and manual operating mechanisms, enabling remote automatic control.

 

Key Advantages

 

1. Dual-function control (regulation and shut-off), integrated design saves installation space and cost;

2. Wear-resistant and erosion-resistant, with a service life far exceeding that of ordinary control valves;

3. Low flow resistance, high flow capacity, and minimal media stagnation;

4. Rapid switching and fast response, suitable for frequent regulation and intermittent start-stop conditions;

5. Simple structure, easy maintenance, and low failure rate.

 

Technical Parameters

 

• Nominal Diameter: DN25～DN600

• Pressure Rating: PN16, PN25, PN40, PN64; Class150/300/600

• Applicable Temperature: -20℃～650℃ (Custom sealing materials can withstand high temperatures)

• Regulation Signal: DC 4-20mA

• Flow Characteristics: Equal percentage

• Connection Method: Flange, Clamping

 

Applicable Working Conditions

 

1. Chemical Industry: Regulation of slurries, adhesives, suspensions, and highly corrosive media;

2. Coal Chemical Industry, Power Industry: Coal powder, ash slurry, wastewater, desulfurization and denitrification slurry;

3. Paper Industry: Pulp, black liquor, fiber media (significant advantage in shear-resistant anti-clogging);

4. Building Materials, Mining: Slurry, powder mixtures;

5. Wastewater Treatment: Flow regulation of sludge and wastewater containing impurities.

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Related Products

Electric Single-Seat Regulating Valve

Electric Single-Seat Regulating Valve

Core Structure

• Electric Actuator: Servo motor + reduction gear + position feedback, converting electrical signals into linear thrust, with manual operation.

• Valve Body Assembly:

◦ Single valve core + single valve seat (single seat structure)

◦ Valve stem, valve cover, packing seal

◦ Straight-through flow path, moderate flow resistance

Working Principle
1. Control system (DCS/PLC) outputs a 4~20mA signal.
2. The actuator receives the signal and drives the valve stem to raise and lower the valve core.
3. Changing the flow area between the valve core and the valve seat adjusts the medium flow rate.
4. Position feedback forms a closed loop, ensuring the opening degree is consistent with the signal.

Three-Way Regulating Valve

Three-Way Regulating Valve

Basic Structure and Types

Based on valve core structure, there are two main types:

1. Confluence Type Three-Way Valve (Two Inlets, One Outlet)

• Two inlets, one outlet

• Mixes two different temperatures/mediums before outputting

• Mostly used for temperature control of hot and cold fluids

2. Diverter Type Three-Way Valve (One Inlet, Two Outlets)

• One inlet, two outlets

• Diverts one flow path proportionally to two pipelines

• Mostly used for bypass regulation and flow distribution

Common Actuators:
• Pneumatic Diaphragm Type (Most Common)

• Electric Actuator (Electric Three-Way Control Valve)

• Can be equipped with a positioner to achieve 4–20mA automatic adjustment

Pneumatic Diaphragm Regulating Valve

Pneumatic Diaphragm Regulating Valve

Valve Body Structure (Two Main Parts)

1. Upper Part: Pneumatic Diaphragm Actuator (Diaphragm Head)

• Diaphragm: Rubber/Fluororubber, generates thrust under pressure

• Spring: Resets and balances air pressure (multi-spring structure is more compact)

• Push Rod: Connects the diaphragm and valve stem, transmits linear motion

• Bracket: Connects the valve body

2. Lower Part: Valve Body Adjustment Mechanism

• Valve Body: WCB, 304, 316, etc.

• Valve Core/Seat: Controls the flow area

• Valve Stem/Packaging: Seals against leakage

• Common Valve Body Types:

◦ Single-seat valve: Low leakage, high precision

◦ Double-seat valve: Low unbalanced force, suitable for large pressure differentials

◦ Sleeve valve: Stable, noise-reducing, erosion-resistant

◦ Angle valve: Anti-clogging, suitable for slurries and crystallizing media

Angle Control Valve

Angle Control Valve

Structural Features

• Right-angle valve body with 90° inlet and outlet, ensuring simple and smooth media flow.

• Valve core structure: Single-seat plunger type valve core, providing high adjustment accuracy.

• Flow path: Straight-through with low resistance, less prone to clogging and material accumulation.

• Internal components: Valve core and seat can be hardened for wear resistance and erosion resistance.

• Actuator: Commonly pneumatic diaphragm type, but electric actuators are also available.

Working Principle
Fluid flows in from the bottom, and the valve core moves up and down to change the flow area, achieving flow and pressure regulation.

Because the flow path has a right-angle turn, the media directly scours the bottom of the valve core, minimizing erosion on the valve seat and ensuring good stability.

+86 19858780995

+86 19858780995

+86 19858780995

+86 19858780995

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