Product Overview
This pneumatic diaphragm control valve is a critical final control element for industrial automatic process systems. Equipped with a diaphragm‑type pneumatic actuator, Fisher smart valve positioner and air filter regulator, it accurately regulates flow, pressure, temperature and liquid level of process media. The stainless‑steel valve body delivers outstanding corrosion resistance, suitable for petrochemical, chemical, power, pharmaceutical and other automatic control working conditions.
Key Features
High‑Performance Diaphragm Actuator
Blue multi‑spring diaphragm actuator provides stable output thrust, fast response and reliable stroke action.
01
Fisher Smart Digital Positioner
High‑precision positioner realizes accurate valve stroke control, with on‑site indication gauges for real‑time status monitoring.
02
Complete Air Filter Regulator Assembly
Integrates pressure reducing, filtering and oil‑free air supply, protecting positioner and actuator from compressed‑air contamination.
03
Stainless Steel Valve Body
Cast stainless‑steel construction offers excellent anti‑corrosion performance for corrosive fluid service. Flanged connection for easy pipeline installation.
04
Main Technical Parameters
| Item | Specification |
|---|---|
| Product Name | Pneumatic Diaphragm Control Valve |
| Valve Body Material | Stainless Steel CF8 / CF8M (Optional WCB alloy steel) |
| Actuator Type | Pneumatic Diaphragm Multi‑spring Actuator |
| Positioner | Fisher Smart Digital Valve Positioner |
| Accessory | Air Filter Pressure Regulator, pressure gauges |
| Connection Type | RF Flanged |
| Pressure Class | Class150 / Class300 (Customizable) |
| Size Range | DN25 ~ DN200 |
| Flow Characteristic | Equal percentage / Linear |
| Applicable Media | Water, steam, oil and various corrosive chemical fluids |
| Working Temperature | ‑40℃ ~ +450℃ |
| Supply Air Pressure | 0.4‑0.6 MPa |
| Signal Input | 4‑20mA DC |
| Brand | SND (Custom marking available) |
Application Scope
- Petrochemical & chemical process automatic control loops
- Power plant thermal process regulation
- Pharmaceutical and fine‑chemical production lines
- Water treatment & environmental‑protection projects
- Refinery, paper‑making and other industrial flow‑pressure adjustment systems
Product Advantages
Competitive advantage
The company conducted a competitive advantage analysis to identify its strengths and weaknesses compared to its rivals.
High‑precision flow regulation, stable control performance
01
Complete supporting accessories, ready‑to‑use after installation
02
Stainless‑steel valve body adapts to corrosive working fluids
03
Fast response speed, small control deviation
04
Modular design, easy maintenance and component replacement
05
FAQ
Q: What signal does this control valve accept?
A: Standard input signal is 4‑20mA DC. Other special signal requirements can be customized.
Q: Can you supply other brand positioners instead of Fisher?
A: Yes, we can configure different brands of positioners, limit switches, solenoid valves according to customer requirements.
Q: What connection types are available?
A: RF flanged is standard. Butt‑weld, socket‑weld connections are also optional.
Q: Can this valve work for corrosive medium?
A: SS316 body is suitable for most corrosive fluids. For strong corrosive media, please inform us so we can select special trim material.
Q: What is your production lead‑time?
A: Standard configuration: 10‑20 working days. Customized specifications will get confirmed lead‑time upon order.
Hot Tags: pneumatic diaphragm control valve, China pneumatic diaphragm control valve manufacturers, suppliers, factory, air supply control valve, control valve, Industrial Control Valve, level valve, Pneumatic Control Valve, remote operated valve
