Precision Valve Rubber Diaphragm
- YiDa
- Dalian,China
- 15-20 days
- 2 billion/year
1. The design of fabric-reinforced, high-tensile-strength diaphragm is meant for tear and fatigue resistance, making the diaphragm capable of handling very high-pressure, high-frequency operating conditions.
2. Since EPDM and silicone release very low amount of leachables and have no smell, they can be used for clean piping systems and medical equipments.
3. The valve rubber diaphragm that is very accurate can be made in very thin thickness at 0.5 mm, with exact shape to the valve cavity.
In the world of precision fluid control systems, a tiny deformation deviation at the level of a micron, or a mismatch of material in the valve diaphragm, can cause pressure fluctuations, contamination of the media, or frequent production line stoppages.
Our Specialized Pump and Valve Diaphragm Solutions:
Manufactured with a state-of-the-art molding technique, these precision rubber diaphragms deliver outstanding dimensional accuracy, consistent deformation, and excellent sealing performance. As essential elastic sealing parts in control valves, solenoid valves, vacuum valves, pressure-regulating valves, and micro-control valves, they make accurate pressure and flow control possible in pneumatic fluid control systems.
Specifications for Our Precision Valve Rubber Diaphragms Are as Follows:
| Item | Specifications |
| Material | EPDM, NBR, FKM, SIL, fabric-reinforced rubber |
| Diameter | 50 mm – 350 mm (customizable) |
| Thickness | 0.5 mm – 5 mm |
| Shape | Round, irregular, thin, ultra-thin (customized according to customer requirements) |
| Color | Standard black (customizable) |
| Dimensional Tolerance | ± 0.05 mm to ± 0.30 mm (depending on product dimensions) |
| Hardness | Shore A 50–70 |
| Tensile Strength | 10 MPa – 20 MPa (varies based on rubber material and formulation design) |
| Elongation at Break | 200% – 600% (varies based on rubber material and formulation design) |
| Compression Set | ≤25% (varies based on rubber material) |
| Temperature Range | Operating temperature depends on the rubber material. EPDM: -40 to 150°C NBR: -30 to 120°C FKM: -20 to 200°C SIL: -60 to 200°C |
| Working Pressure | 0.6 MPa – 1.6 MPa (pressure ratings vary by material formulation) |
| Compatible Media | EPDM: Pure water, gases, weak acids/alkalis; NBR: Oil and gas, hydraulic fluids, general industrial fluids; FKM: Highly corrosive substances, high temperatures, solvents, etc; SIL: Highly polar and inorganic media, food-grade applications, gases, certain mineral and synthetic oils |
What Are the Key Advantages of Pump and Valve Diaphragms?
1. High-precision molding process with uniform thickness.
The thickness of the rubber diaphragm seals is the same throughout, and the dimensional tolerances are very tightly controlled within 0.30 mm (depending on the size of the product). This not only guarantees exact travel but also consistent deformation inside the valve chamber.
Made of high-quality materials such as EPDM, NBR, FKM, silicone (SIL), and fabric-reinforced rubber, they are capable of effectively shutting off, regulating pressure, and switching flows when exposed to a wide range of media, including purified water, oil and gas, very corrosive solvents, and clean fluids.
2. Wear and flex resistance with stable performance.
Diaphragms provide a tensile strength of 10-20 MPa and an elongation at break of 200%-600%, which means they have a very good resistance to tear and fatigue. Fabric-reinforced versions have a reinforcement layer that increases their pressure-bearing capacity and wear resistance, thus enabling them to be used under high-pressure and high-frequency conditions.
3. Low deformation and hysteresis, enhancing overall valve control precision.
It is with technology that our precision valve rubber diaphragms have a compression set of ≤25% as well as a hardness range of Shore A 50–70. Their accurately curved design guarantees a close fit within the valve chamber, enabling the least deformation and fast recovery at the same time during compression and rebound cycles, thus diminishing the effect of deformation hysteresis on flow and pressure control.
4. Eco-friendly and odorless; suitable for clean piping systems and medical equipment.
Our silicone (SIL) products are FDA approved and made with food-contact-grade formulations (payloads according to customer requirements), which can tolerate very low and very high temperatures without giving away smell and odour. In this way, they are perfect for food processing and water treatment. Our EPDM rubbers are non-smelling and have excellent resistance to steam-aging, making them perfect for purified water and gas applications.
In Which Fields Can Our Rubber Diaphragm Seals Be Applied?
1. Industrial automation and process control.
Precision pneumatic valves, hydraulic control valves, and fluid control valves for automation equipment.
2. Microfluidics and precision instrumentation.
Micro-solenoid valves and control valves for instruments and meters.
3. Harsh operating conditions and special media.
Vacuum valves and precision metering valves for the chemical industry.
4. High-purity applications and life sciences.
Fluid control valves for medical equipment and precision valves for water treatment.
About Us:
Our first foray into the rubber industry took place in 1993, and it was only later, in 2006, that we officially founded our company. After more than three decades of being involved in the production of rubber products, we run a state-of-the-art 37,000 square meter plant with the hands of a professional team of 450 members. We boast a yearly production capacity of more than 2 billion units divided between our two major product segments—molded parts and extruded profiles—which allow us to deal efficiently with largescale orders.
Endorsed by High-End International Clients and Backed by Robust Quality Certification Systems.
We have established very strong relationships with globally famous brands like SMC, Omron, Eppendorf, and ALPINE. We feel very proud to have received the award from SMC, "Excellent Supplier of the Year 2023", at the same time Omron has also recognized us as their "Global Strategic Partner". Due to our high quality and services, we have earned the deep trust of our partners. Our product shipment destinations include the USA, Japan, Switzerland, South Africa, and Saudi Arabia. Besides these, we also export our products to different areas in Southeast Asia and Europe.
We obtained ISO9001, ISO14001, IATF16949 as well as CNAS laboratory accreditations and hold a number of international certifications - UL, FDA, EN549, RoHS 2.0, and REACH - which completely satisfy the strict compliance requirements of different industries.
Exhibition Event: The 27th Dalian International Industrial Exhibition.
By utilizing our extensive technical knowledge and the variety of over a thousand material formulations at our disposal, we demonstrated the features of our precision rubber seals and smart manufacturing systems to tap into key customers from Northeast Asia and the Yangtze River Delta.
FAQ:
1. Will the rubber diaphragm rupture under high-pressure conditions?
We present fabric-reinforced diaphragms that are equipped with a hidden layer of fiber reinforcement; such diaphragms are characterized by their elevated tear-resistance capability as well as tensile strength of 10-20 MPa, thus they can perform steadily in the 0.6-1.6 MPa pressure range.
2. Are thin diaphragms durable?
We can make our rubber diaphragms at a thickness of only 0.5 mm. In fact, by implementing a precision molding method and using a material with a 200% - 600% elongation at break, they still exhibit outstanding bending fatigue resistance even though they are so thin.
3. How consistent are dimensions for mass-produced orders?
We operate a CNAS-certified laboratory equipped with high-precision inspection instruments. We conduct full inspections of critical dimensions and maintain tolerances within ±0.30 mm (depending on product size). As a supplier to industry leaders such as SMC and Omron, we guarantee reliable quality.
