Flow Control Diaphragms
Flow Control Diaphragms Manufacturer in India
DS Techno Rubber manufactures high-performance flow control diaphragms engineered for demanding pump applications — delivering leak-proof sealing, extended flex life, and reliable pressure control across aggressive industrial environments.
Built for AODD pumps, dosing pumps, metering pumps, fuel pumps, agricultural sprayers, and vacuum systems, our diaphragms handle continuous cyclic operation while maintaining dimensional stability and sealing integrity in every stroke.
- Sizes: Custom-manufactured to your pump specification
- Pressure: High-pressure rated constructions available
- Materials: NBR, EPDM, FKM, Silicone, Neoprene
What Are Flow Control Diaphragms?
A flow control diaphragm is a flexible elastomeric component that separates the fluid side from the mechanical side inside a pump. As the diaphragm flexes back and forth, it transfers pressure and motion — pumping fluid through the system while maintaining a complete seal between the media and the pump mechanism.
DS Techno Rubber manufactures flow control diaphragms using reinforced rubber constructions that withstand the stress of continuous cyclic operation, high differential pressures, and exposure to oils, fuels, chemicals, and solvents.
Our diaphragms serve as the core sealing element in:
- Air-operated double diaphragm (AODD) pumps
- Chemical dosing and metering pumps
- Fuel transfer pumps
- Agricultural and industrial sprayer pumps
- Pneumatic and vacuum pumps
- Water treatment and circulation pumps
Why DS Techno Rubber Flow Control Diaphragms Outperform
OEM-Equivalent QualityLong Flex Fatigue Life
engineered for millions of strokes without failure
High pressure capability
Leak-proof sealing performance
Excellent dimensional stability
Oil, fuel, and chemical resistant compounds
matched to your process media
Reliable performance in cyclic operation
Suitability for aggressive operating environments
Custom Configurations
Diaphragm Construction & Configurations
Typical Construction Layers
| Component | Description |
|---|---|
| Top Rubber Layer | Fluid-contact face — formulated in a media-compatible compound such as NBR, FKM, EPDM, Silicone, etc. |
| Reinforcement Fabric | Bonded textile layer that adds burst strength, pressure resistance, and flex fatigue life. |
| Bottom Rubber Layer | Mechanical-side face — provides structural integrity and sealing against the pump body. |
| Optional Metal Insert | Steel or aluminium insert for structural support, fastening, or specialised mounting. |
Available Configurations
| Reinforcement Type | Description |
|---|---|
| Single Fabric Layer | Standard reinforcement for moderate pressure and general pump applications. |
| Multi-Layer Reinforcement | Enhanced pressure rating and flex life for demanding continuous-duty pumps. |
| Fabric + Metal Insert | Structural support for applications requiring positive fastening or custom mounting. |
- Responds with low actuation force, enabling precise, sensitive flow regulation
- Regulates pressure up to 20 bar, meeting demanding process-control requirements
- Delivers high repeatability, ensuring consistent flow accuracy over the product’s lifetime
- Handles air, water, fuel, and process fluids, giving engineers flexibility across media types
- Sustains high-cycle applications without losing flexing accuracy
Reinforcement Fabric Options for Pump Diaphragms
DS Techno Rubber selects reinforcement fabrics based on your pump’s pressure rating, operating temperature, and flex life requirements:
| Fabric Type | Key Property |
|---|---|
| Nylon | High flex fatigue resistance — ideal for high-cycle dosing and metering pumps. |
| Polyester | Superior dimensional stability — minimises stretch under sustained pressure. |
| Aramid / Kevlar® | Maximum tensile strength — used in high-pressure AODD and transfer pumps. |
| Cotton | Cost-effective option for lower-pressure, general-duty pump applications. |
| Nomex® | High temperature resistance — suited for elevated-temperature process pumps. |
Common Pump Applications for Flow Control Diaphragms
| Application | Function |
|---|---|
| AODD Pumps | Fluid transfer and chemical handling in chemical, mining, and industrial plants. |
| Dosing Pumps | Accurate chemical dosing in water treatment, pharmaceutical, and food processing. |
| Metering Pumps | Controlled fluid delivery for precise process management. |
| Fuel Pumps | Fuel transfer and pressure control in automotive and energy systems. |
| Agricultural Sprayers | Chemical and pesticide spraying systems in agriculture. |
| Pneumatic Pumps | Air-operated pumping systems in industrial and process environments. |
| Vacuum Pumps | Pressure and vacuum control across instrumentation and laboratory equipment. |
| Water Treatment Pumps | Water and chemical circulation in treatment plants and utility systems. |
Industries Using DS Techno Rubber Flow Control Diaphragms
Our flow control diaphragms serve manufacturers, OEMs, and system integrators across India and globally, including customers in Chennai, Tamil Nadu, and across industrial corridors. Industries we supply include:
| Industry | Pump Type | Diaphragm Used |
|---|---|---|
| Chemical Processing | Chemical dosing pumps, AODD pumps | FKM / PTFE-faced reinforced diaphragms |
| Water Treatment | Dosing pumps, metering pumps | EPDM reinforced diaphragms |
| Agriculture | Sprayer pumps | NBR / EPDM reinforced diaphragms |
| Automotive | Fuel pumps, pneumatic pumps | NBR reinforced diaphragms |
| Oil & Gas | Transfer pumps, chemical injection pumps | FKM reinforced diaphragms |
| Food Processing | Dosing pumps, transfer pumps | Silicone / FDA-grade diaphragms |
| Pharmaceutical | Metering pumps, dosing pumps | Silicone / PTFE diaphragms |
| Industrial Automation | Pneumatic pumps and actuators | Fabric-reinforced moulded diaphragms |
| Paints & Coatings | AODD pumps | Solvent-resistant reinforced diaphragms |
| Fluid Handling Systems | Industrial transfer pumps | Multi-layer reinforced diaphragms |
Custom Flow Control Diaphragms for Your Pump
Design Parameters
- Pump type and model
- Operating pressure range
- Stroke movement and travel
- Fluid / media compatibility
- Temperature conditions
Build Options
- Flex life requirements
- Chemical exposure profile
- Mounting configuration
- Reinforcement type and layers
- Metal insert requirement
Why Choose DS Techno Rubber for Flow Control Diaphragms?
35+ Years of Expertise
Superior Material Quality
Global Standards Compliance
Our diaphragms meet FDA, REACH, RoHS, NSF-61, UL157, and DIN EN 549 requirements where applicable.
Custom Flow Control Diaphragms for Your Needs
Get in touch today to discuss custom Custom Flow Control Diaphragms tailored to your precise needs!
Frequently Asked Questions — Flow Control Diaphragms
A flow control diaphragm is a flexible elastomeric component inside a pump that separates the fluid side from the mechanical side. As it flexes cyclically, it transfers pressure and motion to move fluid through the pump while maintaining a complete, leak-proof seal.
Fabric-reinforced pump diaphragms withstand continuous flexing, high-pressure cycling, and dynamic movement better than non-reinforced diaphragms. The embedded reinforcement layer improves pressure resistance, burst strength, dimensional stability, and service life — making reinforced diaphragms the standard choice for demanding pump applications.
Flow control diaphragms are used in AODD pumps, dosing pumps, metering pumps, fuel pumps, chemical transfer pumps, agricultural sprayer pumps, vacuum pumps, and pneumatic pumps — across chemical processing, water treatment, oil & gas, pharmaceutical, food processing, and industrial automation industries.
FKM (Viton®) and PTFE-faced reinforced diaphragms deliver the strongest chemical resistance for aggressive media. For general chemical dosing applications, EPDM or NBR compounds are widely used depending on the specific fluid compatibility requirements.
NBR (Nitrile Rubber) is the most widely used material for fuel pump diaphragms because of its excellent resistance to oils, diesel, petrol, and hydrocarbon-based fuels. FKM compounds are used where ethanol blends or more aggressive fuels are present.
Yes. DS Techno Rubber manufactures reinforced pump diaphragms with bonded metal inserts for applications requiring structural support, positive fastening, or specialised mounting configurations. Provide your pump model and specification for a custom design.
DS Techno Rubber manufactures flow control diaphragms at our facility in Chennai, Tamil Nadu, India. We supply customers across India and export to the USA, Germany, and other international markets.
Yes. DS Techno Rubber diaphragms are available compliant with FDA, REACH, RoHS, NSF-61, UL157, and DIN EN 549 standards where required by the application and industry. Contact us to confirm certification requirements for your project.
Get a Custom Quote
Get in touch with DS Techno Rubber today — our engineering team designs flow control diaphragms tailored to your pump model, operating media, and pressure requirements.