A soft-sealed butterfly valve uses a flexible material (e.g., EPDM, PTFE) for sealing, offering tight shutoff and corrosion resistance. It’s ideal for water, oil, and gas systems.

EPDM: Good for water and mild chemicals.

PTFE: Resistant to strong acids and alkalis.

NBR/Viton: For oils and fuels.

Water Treatment: EPDM seals for drinking water.

Chemical Industry: PTFE for corrosive media.

Oil & Gas: NBR/Viton for hydrocarbons.

Regular Inspection: Check for wear or leaks.

Lubrication: Use silicone grease for EPDM seals.

Avoid Over-Tightening: Prevents seal damage.

Tight Shutoff: Soft seals prevent leakage.

Corrosion Resistance: Suitable for harsh environments.

Cost-Effective: Lower maintenance than metal-sealed valves.

Temperature Limits: EPDM up to 80°C, PTFE up to 120°C.

Pressure Range: Typically ≤1.6 MPa.

Leakage: Check seal condition or replace.

Stiff Operation: Lubricate or inspect for debris.

Seal Wear: Replace if damaged.

Alignment: Ensure proper pipe alignment.

Torque Control: Avoid over-tightening.

Test Before Use: Check for leaks.

ISO 5208: Leakage testing.

API 609: Fire-safe design.

EN 593: Performance requirements.

Contact the manufacturer or supplier for installation, maintenance, or troubleshooting assistance.

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