Soft Seal Valves

What Are Soft Seal Valves?
Soft seal valves use a resilient seat material such as EPDM, PTFE or rubber to create the sealing surface between the disc and the valve body. The resilient seat material deforms slightly under closing pressure, providing effective shut-off for compatible media. Soft seal designs are commonly used in butterfly valves for water, low-pressure industrial and utility service where the seat material is chemically compatible with the pipeline medium.
Honiks is a factory-backed industrial valve supplier in China with access to qualified partner factories for soft seal valve production. See HN107 Wafer Butterfly Valve for catalog reference data with EPDM seat and wafer body design.

Key Features

Resilient seat material provides effective shut-off for compatible media.
Suitable for low to medium pressure water, HVAC and general industrial service.
Seat material options including EPDM, natural rubber, neoprene, silicone rubber and fluorine rubber, selected according to temperature and chemical compatibility.
Compact valve body design for wafer-type installation.
Detachable seat structure for maintenance and material selection flexibility.

Related Categories

Wafer Butterfly Valves — Soft seal butterfly valves with wafer body
Butterfly Valves — All butterfly valve types
ANSI Valves — ANSI-referenced industrial valves

Frequently Asked Questions
What seat materials are available?
EPDM is the standard seat material for water service. Other options including natural rubber, neoprene, silicone rubber and fluorine rubber can be discussed according to medium, temperature and project requirements.
Are soft seal valves suitable for high-temperature service?
Soft seal valves are typically used in moderate temperature ranges. The specific temperature limit depends on the seat material selected. For high-temperature service, metal-seated valve configurations should be considered instead.
For general valve selection guidance across industrial applications, read our industrial valve selection guide.