| Parameter | Specification |
|---|
| Valve Type | Triple Offset Butterfly Valve / Double Eccentric Butterfly Valve, Wafer / Lug / Double Flanged |
| Size Range | DN80 (3") to DN1200 (48") |
| Pressure Rating | ASME B16.5 Class 150# / Class 300# / Class 600# / PN10 / PN16 / PN25 / PN40 |
| End Connection | Wafer, Lugged, or Double Flanged compatible with ASME B16.5 / B16.47 / EN 1092-1 flanges |
| Face-to-Face | API 609 Table 2 (Wafer/Lug/Flanged) / ISO 5752 Series 20 |
| Design Standard | API 609 / ASME B16.34 / BS 5155 / EN 593 |
| Testing Standard | API 598 / ISO 5208 -- Shell Test 1.5 x rating, Seat Test 1.1 x rating |
| Seat Sealing | Laminated SS316 + Graphite seat ring (triple offset) / PTFE seat (double offset) |
| Leakage Class | Bubble-tight zero leakage / ISO 5208 Rate A / ANSI/FCI 70-2 Class VI |
| Stem Design | Heavy-duty solid stem, keyed shaft, blowout-proof stem retention pin, ISO 5211 actuator flange |
| Fire Safe Design | Certified to API 607 / ISO 10497 (triple offset metal laminated seat is intrinsically fire-safe) |
| Part | Standard Material | Exotic/Special Alloys (On Request) |
|---|
| Body (Wafer/Lug/DF) | Cast Steel ASTM A216 WCB / SS316 CF8M / Ductile Iron GGG40 | Super Duplex F55, Alloy 20, NAB C95800 |
| Disc | Cast Steel WCB (ENP plated) / SS304 CF8 / SS316 CF8M | Solid Duplex, NAB, SS316 Stellite overlayed |
| Laminated Seal Ring | Multi-layered Stainless Steel SS316 + Flexible Graphite laminate (triple offset) | Inconel 625 + graphite laminate, solid metal seat |
| Body Seat | Stellite 6 hardfacing overlay on integral body seat (min 2mm thickness) | Solid SS316 welded seat, Hastelloy C seat |
| Stem / Shaft | Stainless Steel ASTM A564 Gr 630 (17-4PH) / SS410 / SS316 | Monel K500, Inconel 718 |
| Shaft Bearings | PTFE-lined sintered Bronze bushing / Stainless Steel backed metal bearings | Solid Stellite 6 bearings (high-temp) |
| Gland Packing | High-purity die-formed Flexible Graphite rings | Fugitive emission graphite packing |
| Fasteners | Carbon Steel Studs A193 B7 & Nuts A194 2H | SS316 Studs and Nuts |
Conforms to API 609 or ISO 5752 Series 20. Bore sizes are full-bore from DN80 to DN1200. Standard Wafer, Lug, and Flanged face-to-face dimensions. General arrangement drawings (GAD) featuring electric actuator, pneumatic scotch-yoke actuator, or manual gear box dimensions are supplied per Purchase Order.
