Butterfly Valve EPDM Seat Performance
Resilient Sealing Contact
The EPDM seat maintains continuous contact with the valve disc when the butterfly valve is closed, creating the sealing interface around the disc perimeter.
Elastic Recovery
The rubber seat can recover its shape after the disc moves between open and closed positions, supporting repeated valve operation without relying on a rigid sealing surface.
Controlled Seat Compression
The seat profile is designed to provide the required interference with the disc and valve body. Proper compression helps balance sealing contact with valve operating torque.
Disc Protection
The resilient seat separates the metal disc from the valve body during operation, reducing direct metal-to-metal contact within the valve assembly.
EPDM Material & Hardness Selection
- EPDM Compound Options
Different EPDM formulations can be supplied according to the contacted fluid, temperature, and valve operating conditions.
- Shore A Hardness
Hardness options can be selected according to seat compression, disc movement, and required sealing contact. The hardness specification affects both deformation and operating resistance.
- Water Service Compatibility
EPDM seats can be specified for compatible water-based applications, including water supply, water treatment, irrigation, and selected industrial fluid systems.
- Application-Based Material Selection
Customers can provide the fluid type, temperature, pressure, valve size, and operating conditions so the appropriate EPDM specification can be evaluated for production.
Chaoyue Butterfly Valve EPDM Seat Manufacturing Capability
Custom Seat Profiles
Chaoyue manufactures EPDM valve seats according to customer drawings, samples, and valve specifications, including different sealing profiles and mounting geometries.
Dimensional Production Control
Key dimensions such as inner diameter, outer diameter, seat thickness, shaft openings, and sealing surfaces are controlled according to customer specifications.
Molded Rubber Production
Customized valve seats are produced through rubber molding processes using application-specific tooling. Tooling can be developed according to the required valve seat geometry.
OEM & Batch Supply
Chaoyue supports prototype development, sample approval, and volume production for OEM valve manufacturers and replacement-part suppliers, with packaging and identification arranged according to order requirements.
FAQ
How do I identify the correct EPDM seat for a butterfly valve?
The valve size alone may not be sufficient. The valve body type, disc dimensions, shaft arrangement, seat profile, connection standard, and existing seat specifications should be checked before selecting a replacement.
How can I confirm whether a replacement seat fits the existing valve body?
The replacement should be compared with the original seat and valve body dimensions, including mounting features, shaft openings, sealing profile, and disc clearance. A drawing or physical sample provides the most accurate reference.
Can EPDM seats be supplied for different butterfly valve sizes?
Yes. Seats can be produced for different valve sizes according to the required dimensions and valve configuration. The actual size range depends on the tooling and production specifications.
