Concentric butterfly valve — FLANGED type
Integral double flanges — DN250 to DN1800 — PN10/PN16
Concentric butterfly valve with integral flanges (Flanged body) designed for large diameters. GGG40 ductile iron body with flanges to EN 1092 PN10/16. Standalone installation without through tie-rods — ideal for distribution networks, pumping stations and hydroelectric installations. DN250 to DN1800 range.
| Connection | Integral flanges |
|---|---|
| Body | GGG40 ductile iron |
| DN | DN250 — DN1800 |
| PN | PN10 / PN16 |
| Face-to-face | EN 558 — Series 20 |
| Temperature | −10 °C to +80 °C (std EPDM) |
| Standard | EN 593 / EN 1074-2 |
| Sealing | EN 12266-1 Class A |
- Integral flanged body — installation without through tie-rods
- Designed for large diameters DN250 to DN1800
- EPDM liner — integrated flange gasket
- Guaranteed bidirectional sealing
- Epoxy coating inside/outside ≥ 250 μm
- B-62 bronze bearings — intermediate bearing on large DN
- ISO 5211 mounting pad — compatible with gearboxes and actuators
- Compliant with EN 1092 PN10/16, ANSI-150, JIS 5K/10K
| Component | Material |
|---|---|
| Body | EN-GJS-400-15 ductile iron (GGG40) — Epoxy coating ≥ 250 μm |
| Disc (butterfly) | GGG40 ductile iron (standard) / AISI 316 optional |
| Shaft | AISI 420 stainless steel (X20Cr13) — Anti-blowout design |
| Liner | Drinking-water grade EPDM — NBR / PTFE / Viton available |
| Bearings | B-62 bronze / self-lubricating PTFE (depending on DN) |
| O-ring | NBR |
| Body coating | Two-component epoxy inside/outside ≥ 250 μm (SA 2.5) |
| Shaft cover | F-114 steel (DN ≥ 700) |
Pressure: PN10 / PN16 — Face-to-face: EN 558 series 20 — Connection: EN 1092 PN10/16, ANSI-150, BS Table E/D, JIS 5K/10K
| DN | A (mm) | B (mm) | E (mm) | I (mm) | SW (mm) | d3 (mm) | d4 (mm) | ISO 5211 | PN10 weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| 250 | 465 | 262 | 68 | 28 | 22 | 135 | 102 | F-10 | 31 |
| 300 | 540 | 300 | 78 | 25 | 22 | 150 | 125 | F-12 | 42 |
| 350 | 620 | 340 | 78 | 27 | 27 | 150 | 125 | F-12 | 52 |
| 400 | 662 | 360 | 102 | 27 | 27 | 150 | 125 | F-12 | 74 |
| 450 | 736 | 390 | 114 | 36 | 36 | 175 | 140 | F-14 | 115 |
| 500 | 790 | 420 | 127 | 36 | 36 | 175 | 140 | F-14 | 155 |
| 600 | 960 | 495 | 154 | 46 | 46 | 210 | 165 | F-16 | 232 |
| 700 | 1110 | 575 | 165 | 90 | 80 | 300 | 254 | F-25 | 385 |
| 800 | 1245 | 620 | 190 | 90 | 80 | 300 | 254 | F-25 | 525 |
| 900 | 1380 | 690 | 203 | 116 | 95 | 300 | 254 | F-25 | 668 |
| 1000 | 1500 | 750 | 216 | 123 | 95 | 300 | 254 | F-25 | 860 |
| 1100 | 1570 | 795 | 216 | 123 | 95 | 300 | 254 | F-25 | 925 |
| 1200 | 1714 | 865 | 254 | 136 | 100 | 350 | 298 | F-30 | 1095 |
| 1400 | 1960 | 980 | 279 | 126 | 120 | 415 | 356 | F-35 | 1310 |
| 1600 | 2155 | 1090 | 318 | 155 | 150 | 475 | 406 | F-40 | 2150 |
| 1800 | 2566 | 1290 | 356 | 200 | 150 | 475 | 406 | F-40 | — |
E = face-to-face | B = body outside Ø | A = top flange outside Ø | I = shaft bore | SW = shaft square | d3 = top flange bolt circle | d4 = top flange hole Ø | Indicative PN10 weight, bare shaft without actuator.
Epoxy coating — body
250 μm — Two-component epoxy paint applied by electrostatic powder coating after SA 2.5 blasting. Minimum thickness 250 μm inside and outside.
Disc — protection
≥ 200 μm — GGG40 ductile iron with epoxy coating, or AISI 316 stainless steel disc as an option depending on the application.
Shaft — AISI 420 stainless
AISI 420 — Martensitic stainless steel shaft providing optimal resistance to corrosion and mechanical wear over time.
Bolting
A2-70 / A4-80 stainless — Zinc-plated dichromated steel as standard. Available in A2-70 / A4-80 stainless steel for aggressive environments.
Reference standards: the epoxy coating complies with EN 14901 (internal coatings of valves for drinking water) and GSK. Surface preparation is carried out by blasting to ISO 8501-1 grade SA 2.5 before coating.
