Professional Control Valve Manufacturer
Control valves are used as the most important management device in fluid managing methods. They are features below :
- Fast and powerful
- Reliable quality .
- Compact design.
- Minimum stress drop.
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BCST your Expert Control Valve Supplier in China
BCST control valves are utilized in diverse approaches to modify glide, stress, temperature, or different variables. It is used to govern fluid glide through the various scales of the gliding passage as directed through a sign from a controller. This allows the direct control of glide price and the consequential management of manner portions which include pressure, temperature, and liquid level.
BCST control valve is a vital product used in lots of industries. One of the maximum well-known packages is within side the oil and fuel line industry. It is used to govern working situations which include glide price, temperature, stress, and liquid level.
For greater facts on managing valves, please touch [email protected].
BCST your One-Stop Control Valve Solution in China
BCST substantial choice of control valves gives the fine answer to your requirements. BCST is a skilled and experienced control valve producer. As an ISO-registered company, BCST has a robust expert heritage and informed personnel with over 20 generations of producing and export experience.

Pneumatic Control Valve
A pneumatic control valve is actuated by a pneumatic actuator driven by compressed air.

Electric Control Valve
The electric control valve is actuated by an electric actuator operated by an electric motor.

Self Regulating Control Valve
The self-regulated control valve is a self-sufficient device that doesn’t need external power.

Angle Control valve
The angle control valve is suitable for a medium with a solid body such as slurry, etc

Globe Control Valve
Globe control valve regulates flow by linear movement with spherical body shape.

Linear Control Valve
Linear control valve feature with high accuracy flow control and simple design.

Butterfly Control Valve
The butterfly control valve is an economical selection with lower accuracy than others.

Segmented Ball Control Valve
The segmented ball control valve is suitable for erosive or viscous fluid and solid-containing liquid.

Three Way Control Valve
The three-way control valve is a globe valve with three pipelines to mix or diverge the fluid service.

Two Way Control Valve
The two-way control valve is a globe valve with a straightforward pipeline with an inlet and outlet port.

PTFE Lined Control Valve
PTFE lined control valve is suitable for high corrosive fluid with low pressure and temperature.

Rotary Control Valve
The rotary control valve is actuated by an eccentric rotary motion with a small body and is lightweight.
BCST your BEST Supplier for Control Valve
BCST has advanced control valves with its very own traits that meet the maximum vital primary concepts of process control. Our merchandise is CE, SIL2 and RoHS approved. BCST is one of the main dependable and strong control valves producers in China. If you`re trying to find a skilled producer for your subsequent project, with robust technical heritage, expert team, and budget-pleasant merchandise, BCST is your maximum appropriate choice.
BCST is your expert associate for managing valve solutions. Welcome to go to our factory.

BCST Control Valve Quality Control
- Technical software caculation
- Technical team meeting
- CAD drawing confirmation
Assembly
- Installation
- Calibration
- Chemical Analysis
- Mechanical Propery
- dimension Checks
- Visual Checks
- Non-destruction Examination
Hydrostatic Test
- Shell test
- Sealing test
- Leakage test
- Air test
- Function test
- CNC machining
- Visual checks
- Dimensional checks
- Liquid penetration test
Outlook Treatment
- Surface Polish
- Painting
- Visual inspection
- Thickness checks
- Visual checks
- Liquid penetration
- Test
- Hardness test
- Lapping
- Dimensional checks
Packing
- Marking
- Exported wooden box
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Why Purchase Control Valve From BCST
BCST control valve has composed of a pneumatic diaphragm actuator or piston actuator; there are three types of the valve seat.
- One is P style low flow resistance straight single-seat valve,
- Another is low resistance sleeve valve
- Thirdy, N-type low resistance double-seat valve.
Among them, single-seat control valves are the most popular.
Whether it is a low resistance single-seat valve or sleeve valve, they have a simple and compact structure and high flow coefficient.
Control valve bodies adopt straight single-seat and the upper guiding structure without bottom cover, and the feature makes control valve small volume, lightweight, fluent runner and high efficient.
The connection of body and pipe adopts male and female flange, which adapts different nominal diameters. The control valve body is classified into ordinary and middle temperatures for different working temperatures. Plug type of single-seat valve is on oriented piston valve. The plug type of sleeve valve is the cylinder, which is guided by the inner cylinder and a particular characteristic hole on the sleeve after precision finishing.
BCST control valves have accurate flow characteristics and conform to national regulation IEC standard and slope deviation requirements.
The standard filling material is PTFE, but flexible graphite can also be used according to field usage.
Type Method | Pneumatic diaphragm actuator | Electric actuator |
JCH23~JCH56 | 3810L series | |
Multi-spring type | Intelligent integrated type | |
Usage | Regulating type, ON-OFF type | Regulating |
Air supply pressure or Power supply voltage | Air supply pressure (Spring range) 140(20~100)Kpa G 240 (40~200) Kpa G 280 (80~240) Kpa G |
Power: AC 200V±10% 50Hz Or Power: AC 380V±10% 50Hz○1 |
Connector | Air pipe connector: RC1/4 | Nomal type: cable inlet 2-PF(G1/2〞) Explosive proof: Protection jacket PF(G3/4〞) |
Direct action | Pressure increase, stem descend, valve close. | Input signal increase, stem descend, valve close. |
Reaction | Pressure increase, stem ascend, valve open. | Input signal increase, stem ascend, valve open. |
Input signal | 40~20mA.DC(with positioner) | Input/output4~20mA.DC |
Lag | ≤1%FS(with positioner) | ≤0.8%FS |
Linear type | 2%FS(with positioner) | ≤+1%FS |
Environmental temperature |
-10℃~+70℃ | Standard type: -10℃~+60℃ With space heater○1 : -35℃~+60℃ Explosive proof: -10℃~+40℃ |
Surface coating | Green, acrylic acid polyurethane coating | Blue, acrylic acid polyurethane coating |
Accessories | E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch | Space hearter (normal type) |
Flow characteristic | Linear, percentage, quick open | ||
Allowable range | 50: 1 (CV<6.3 30: 1) | ||
Rated Cv value | Percentage CV1.6~630 ,linear CV1.8~690 | ||
Allowable leakage | Metal seal: IV grade(0.01% rated capacity) Soft seal: VI grade(foam grade) Leakage standard: GB/T 4213 | ||
Performance |
| Pneumatic | Electric |
Intrinsic error % | ±1.5 | ±1.0 | |
Return difference, % | ≤1.5 | ≤1.0 | |
Dead zone, % | ≤0.6 | ≤1.0 | |
Difference from beginning to end point, % | ±2.5 | ±2.5 | |
Rated travel difference, % | ≤2.5 |
Control Valve -FAQ
1.What is Control Valve Actuator?
An actuator is an assembly fitted to the control valve to supply energy for the transfer of fluid elements, the plug, ball valve, or vane. The control valve operation consists of positioning those elements relative to the desk-bound seat of the valve. Therefore, control valves need actuators to operate.
The valve actuator performs a critical function. First, circulate the elements to a system required with the aid of using the control valve and default positioning at the same time as there’s no pressure energy available. Next, the actuator accepts a sign from the control device and, in response, moves the valve to a completely open or completely-closed or extra excellent closed function.
There are three actuators for control valves; pneumatic, electrical, and hydraulic.
Pneumatic actuators
Pneumatic actuators are the maximum substantially used approach of actuation. They can deliver crucial forces with an adequate journey speed for optimum programs. They provide fail-steady responses to pressure electricity loss by including spring devices in the design. They are inherently stable towards explosion hazards, and widespread strategies include a piston, diaphragm, or rotary vane types.
Advantages
- High pressure and pace of motion.
- High durability.
- Reliability
- Safe technology.
- Inexpensive.
Electric actuator
The electric actuator uses a motorized electric motor and a gears reduction power to transport the valve into linear or rotary excursions. They may be used for on-off applications for huge isolating valves. They additionally offer non-stop positioning control with the aid of using providing position feedback to a controller imparting variable pace reversible power action. They are broadly carried out in the energy generation industry, water supply/treatment plants, pharmaceutical, etc.
Advantages
- Accurate control and positioning.
- Able to prevent at any point of the stroke.
- Easy to set acceleration and deceleration.
- No outside sensors.
- Low working costs.
- Excellent performance at a high speed.
- Maintenance friendly.
- Low hazard of contamination.
Hydraulic actuators
Hydraulic actuators use liquid pressure to transport the valve mechanism. Almost all hydraulics actuators use a piston in preference to a diaphragm to transform fluid pressure into mechanical pressure. Hydraulic actuators generate significant mechanical power because they’re utilized in huge isolating valves on gas pipelines. In addition, they showcase very strong positioning because of the non-compressibility of hydraulic oil. Some actuator designs integrate hydraulic and electric powered strength.
Advantages
- Infinitely variable control of equipment ratio in a huge variety and a possibility to create the big reduction ratio.
- Small precise weight.
- Simple and reliable protection of the engines from overloads.
- Slight sluggishness of the rotating parts.
- The simplicity of transformation of rotary motion into reciprocating one.
- The possibility of positioning a hydraulic device on removal from a power source.
Control valve actuator specialists BCST Group manufacture, stock, and export exceptional BCST control valve actuators with a selection of various types available to fit your industry needs. A variety of accessories completely supports all products. To learn more about BCST Group services and to buy online, you may email us at [email protected] in case you want further help together along with your application or desire to carry an immediate purchase.