- Item Code: Di096B
- Disc: SS(CF8M)
- Pressure Rating: PN-25
- Testing Standard: BSEN 12266 Part-1
- Size Range: 40mm to 300mm
- Product Standard: BS 5155, EN 593, API 609 CAT.A.
Suitable For
Material Specification
| P. NO. | NAME OF PART | MATERIAL | ||
|---|---|---|---|---|
| 1 | GRUB SCREW | MILD STEEL | ||
| 2 | HANDLE | UP TO 6" | M.S. SHEET (IS 2062) FABRICATED (POWDER COATED) / C.C.S. (ASTM A216 Gr. WCB) |
|
| 8" TO 12" | ||||
| 3 | L-KEY BOLT | CARBON STEEL | ||
| 4 | INDEXING PLATE | MILD STEEL (IS 2062) | ||
| 5 | NUT | CARBON STEEL | ||
| 6 | BODY | D.I. (ASTM A395) | ||
| 7 | STEM | S.S. (ASTM A276 TYPE 410) OR ITS EQ. | ||
| 8 | MOULDED LINER | BUNA-N / EPDM (SHORE HARDNESS 60° ±4) | ||
| 9 | TAPER PIN | HANDENED STEEL | ||
| 10 | DISC | S.S. (ASTM A351 Gr. CF8M) | ||
| 11 | 'O' RING | EPDM (SHORE HARDNESS 60° ±4) | ||
| 12 | BUSHING | PTFE | ||
| 13 | GRUB SCREW | MILD STEEL | ||
| 14 | PACKING | EPDM (SHORE HARDNESS 60° ±4) | ||
| 15 | GEAR BOX | ------ | ||
| 16 | HAND WHEEL | MILD STEEL (IS 2062) | ||
Dimensional Data
| SIZE (mm) | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
|---|---|---|---|---|---|---|---|---|---|---|
| ~A | 212 | 212 | 212 | 212 | 212 | 212 | 260 | 356 | 406 | 406 |
| ~B | 118 | 130 | 146 | 151 | 182 | 191 | 210 | 236 | 290 | 320 |
| ~C | 64 | 70 | 81 | 81 | 116 | 142 | 147 | 171 | 211 | 248 |
| ∅D | 81 | 95 | 111 | 120 | 144 | 175 | 200 | 255 | 325 | 374 |
| E | 33±1 | 43±1 | 46±1 | 46±1 | 52±1 | 56±1 | 56±1 | 60±1 | 68±2 | 78±2 |
| ~F | 180 | 180 | 180 | 180 | 180 | 180 | 180 | 180 | 220 | 220 |
| ∅G | 175 | 175 | 175 | 175 | 175 | 175 | 175 | 175 | 250 | 350 |
| H~ | 125 | 137 | 153 | 160 | 170 | 207 | 218 | 243 | 300 | 330 |
Principle Features
INTRODUCTION
Leader Butterfly Valves are designed to meet the flow control requirement of plumbing, fire-fighting, and HVAC application. The body seat is vulcanised in-situ onto the body and offers 100% bi-directional sealing. The wafer-style body has universal design to fit between flanges of all almost all standards.
- Design Standard: BS 5155, EN 593, API 609 CAT. A.
- Wafer type design makes it compact and take lesser space.
- Dynamic sealing of concentric disc is obtained with vulcanised rubber seat at very low torque.
- High-precision disc external profile for smooth operation & tight shut-off sealing with low operating torque.
- Moulded rubber body seat extending onto the contact faces ensures perfect sealing and eliminates the need for separate flange gaskets.
- Notch plate ensures the locking of the hand lever at different position in addition to open and closed position.
- Shaft sealing is ensured by double sealing of Bush and ‘0’ ring combination.
- Body castings made of superior Ductile Iron ASTM A395 grade cast iron to ensure additional strength.
- Valve disc made of SS316 offers high strength against pressure.
- Shafts made of martensitic stainless steel to ensure maximum strength and torsional rigidity.
- Two-piece stem design which is precisely guided between the PTFE bush & Rubber ’0’ Rings to prevent leakage, corrosion, and stem seizure.
- Taper disc holder pins to ensure shockproof shaft to disc connection & suitability of replacement at field.
- Easy visual control of open/closed position marked on the notch plate.
- Operation mode manual, gear, electric, pneumatic.
- Available with locking arrangement on request.
- Temper Switch / supervisory limit switches option available on request.
- Top flange as per ISO 5211 to suit F Series flanges of Gears and Actuators.
END CONNECTION
- Suitable for Clamping between flanges as per BSEN 1092 PN-25.
- Suitability for insertion between other flange standards also available upon request.
UTILISATION & SERVICE
- Best suited for water, HVAC, fire-fighting service.
WORKING PRESSURE & TEMPERATURE LIMITS
- Maximum Working Pressure: 25 Bar.
- Maximum Working Temperature: 120°C.
- See Pressure / Temperature Diagram.
TEST PRESSURE (Hydrostatic)
| Rating | PN-25 |
|---|---|
| Body (Hyd.) | 37.5 Bar |
| Seat (Hyd.) | 27.5 Bar |