Pneumatic Diaphragm Control Valves
Concorde Valves & Automations: India’s Leading Manufacturer & Supplier of Pneumatic Diaphragm Control Valves
For precise flow regulation in industrial processes, a pneumatic diaphragm control valve is essential. Concorde Valves & Automations is India’s trusted manufacturer and supplier of pneumatic diaphragm operated control valves. Our valves are designed for accuracy, durability, and reliability across industries like chemical processing, pharmaceuticals, oil & gas, food & beverage, and water treatment.
This page covers the working, features, specifications, and applications of pneumatic diaphragm valves and explains why Concorde is your best partner for flow control solutions.
What is a Pneumatic Diaphragm Control Valve?
A pneumatic diaphragm valve uses a flexible diaphragm and compressed air to regulate flow of gases, liquids, or steam. Known for precision, these valves provide tight shut-off, stable pressure control, and reliable performance in demanding environments.
How Does a Pneumatic Diaphragm Operated Control Valve Work?
When air pressure is applied to the pneumatic diaphragm actuator, the diaphragm moves to adjust the valve opening. This modulates the fluid flow, ensuring accurate regulation of pressure, flow rate, and temperature. Options include air-to-open, air-to-close, and spring-return designs depending on process safety requirements.
Key Features of Pneumatic Diaphragm Valves
- Precise Control: Delivers accurate regulation of flow, pressure, and temperature.
- Durable Build: Handles high pressures and harsh conditions with long service life.
- Low Maintenance: Simple construction reduces downtime and service costs.
- Versatile Applications: Suitable for water treatment, pharma, oil & gas, and more.
Specifications of Pneumatic Diaphragm Control Valves
Our pneumatic diaphragm operated control valves are available in multiple sizes, materials, and actuation types. Standard specifications include:
| Valve Type | Pneumatic Diaphragm Control Valve |
| Size Range | 1/2" to 12" (DN15–DN300) |
| Body Material | Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Alloy Steel |
| Diaphragm Material | EPDM, PTFE, Nitrile, Neoprene, Viton |
| Operating Pressure | Up to 10 bar (150 psi) |
| Temperature Range | -20°C to 200°C |
| End Connections | Flanged, Screwed, Socket Weld, Butt Weld |
| Actuation Type | Pneumatic (Air to Open / Air to Close), Spring Return |
| Control Signal | 4–20 mA, 0–10 VDC, Pneumatic (3–15 psi) |
| Leakage Class | ANSI Class IV, VI |
| Flow Characteristic | Linear, Equal %, Quick Opening |
| Certifications | ISO 9001:2015, CE, ATEX |
| Applications | Chemical, Water, Pharma, Oil & Gas, Food & Beverage |
Why Choose Concorde Valves & Automations for Pneumatic Diaphragm Operated Control Valves?
We are India’s trusted source for high-performance pneumatic diaphragm valves. Here’s why industries rely on us:
- Superior Quality: Premium materials and strict QA for global compliance.
- Custom Solutions: Valves tailored to client-specific needs.
- Industry Expertise: Decades of experience in flow control solutions.
- Competitive Pricing: Reliable products at market-friendly costs.
Applications of Pneumatic Diaphragm Control Valves
Chemical Processing
Handles corrosive fluids with accuracy and safety.
Water Treatment
Flow regulation for filtration, purification, and wastewater plants.
Pharmaceuticals
Precise sterile flow control in production lines.
Oil & Gas
Regulates pressure and flow in upstream/downstream systems.
Food & Beverage
Hygienic design ensures safety in processing plants.
Understanding the Control Valve Diaphragm
The control valve diaphragm is the core element that flexes under air pressure to control flow. Available in EPDM, PTFE, and elastomer blends, this component must be carefully matched to process conditions for reliable operation.
Concorde Valves & Automations: Trusted Partner for Pneumatic Diaphragm Valves
- Expertise: Industry-specific knowledge and solutions.
- Technology: Latest manufacturing techniques for efficiency.
- Support: End-to-end service from selection to after-sales.
How to Choose the Right Pneumatic Diaphragm Control Valve
- Material Compatibility: Ensure corrosion resistance for the fluid handled.
- Pressure & Temperature: Match the valve to max operating conditions.
- Flow Capacity: Size correctly for system flow rates.
- Actuation Method: Select pneumatic or spring-return based on safety needs.
