Lug Butterfly Valve -- API 609 WCB EPDM Lined
Technical Datasheet -- Tapped Lug Butterfly Valves for Dead-End Service
Document No.SV-DATA-LBV-001
RevisionA
DateMay 2026
ManufacturerSupreme Valves India, Ahmedabad, Gujarat, India
Lug-type butterfly valves with tapped lug holes for dead-end service and bi-directional isolation. EPDM-lined SS316 disc for water, HVAC, and general industrial service. API 609 / MSS SP-67 / ASME B16.34 compliant. Lever, gear, or actuator operated. Replaceable liner design.
Technical Specifications
| Parameter | Specification |
|---|
| Product Type | Lug Butterfly Valves |
| Category | Butterfly Valves |
| Size Range | 2" to 48" (DN50 to DN1200) |
| Pressure Class | Class 150 / Class 300 per ASME B16.5 / API 609 |
| End Connections | Lug type with tapped holes per API 609 / MSS SP-67 -- allows dead-end service and downstream pipe removal |
| Body Material | ASTM A216 WCB / ASTM A351 CF8M (SS316) / ASTM A395 Ductile Iron |
| Disc Material | SS316 with ENP or chrome plating / NAB-coated (marine) / Ductile iron with EPDM coating |
| Shaft Material | ASTM A276 316 SS / SS410 with bronze bushing |
| Seat / Liner Material | EPDM / NBR / Viton (FPM) / PTFE / RPTFE bonded or replaceable liner |
| Face-to-Face | API 609 short pattern or ASME B16.10 long pattern |
| Operation | Locking lever (up to 8 inch) / Gear operator (10 inch and above) / Pneumatic / Electric actuator |
| Leakage Class | API 598 / EN 12266-1 Class A (soft seat) -- zero visible leakage |
| Temperature Range | -20 deg C to +120 deg C (EPDM) -- up to +200 deg C (PTFE/RPTFE) |
Materials of Construction
| Component | Material |
|---|
| Carbon Steel | ASTM A216 WCB (standard industrial) |
| Stainless Steel | ASTM A351 CF8M (SS316) -- corrosive service |
| Ductile Iron | ASTM A395 (economical water / HVAC service) |
| Liner Options | EPDM (water / steam), NBR (oil), Viton FPM (chemical), PTFE/RPTFE (high temp / chemical) |
Testing & Inspection
| Test | Requirement |
|---|
| Testing | Hydrostatic shell test 1.5 x WP per API 598 / EN 12266-1; Seat leakage test per API 598 / EN 12266-1; Functional test -- full stroke, torque; Material certificates per EN 10204 3.1 |
| Certification | ISO 9001:2015 QMS, EN 10204 3.1 material certificates, hydrostatic and seat test reports |
Applicable Standards
| Standard | Description |
|---|
| Design Standard | API 609 Category A / B, MSS SP-67, ASME B16.34 |
Notes
- Liner material must be specified by the purchaser based on service fluid and temperature.
- For dead-end service, confirm that the downstream flange rating and bolting can support the full pressure thrust load.
- For high-temperature service (> 120 deg C EPDM limit), PTFE/RPTFE liner is required.
- All valves are manufactured by Supreme Valves India as per our standard specifications.
