Butterfly Valve 303
Technical Specifications
Nominal diameter DN 40-2400- Nominal pressure PN10, PN16, PN25
- Medium temperature -15 °C ... +110 °C
- Types of Valve End Connections Flanged, wafer, lug
- Leakage Class «А»
- Mounting Position Any, except for downward-driven devices
- Types of Control — manual (lever) — manual (handwheel)— manual (gearbox)— pneumatic actuation — electric actuation
- Warranty Period 12 months
- Average Service Life 10 000 cycles
- Guaranteed Service Life Not less than 5000 cycles
Technical Drawings and Dimensions
Table of Basic Dimensions
| DN | D, mm | D1, mm | L, mm | n-ød |
|---|---|---|---|---|
| 400 | 580 | 525 | 102 | 4-M27 |
| 450 | 640 | 585 | 114 | 4-M27 |
| 500 | 715 | 650 | 127 | 4-M30 |
| 600 | 840 | 770 | 154 | 4-M33 |
| 700 | 910 | 840 | 165 | 4-M33 |
| 800 | 1025 | 950 | 190 | 4-M36 |
| 900 | 1125 | 1050 | 203 | 4-M36 |
| 1000 | 1255 | 1170 | 216 | 4-M39 |
| 1100 | 1355 | 1270 | 254 | 4-M39 |
| 1200 | 1485 | 1390 | 254 | 4-M45 |
| 1400 | 1685 | 1590 | 279 | 4-M45 |
| 1500 | 1820 | 1710 | 318 | 4-M52 |
| 1600 | 1930 | 1820 | 318 | 4-M52 |
| 1800 | 2130 | 2020 | 356 | 8-M52 |
| 2000 | 2345 | 2230 | 406 | 8-M56 |
Tabulated data for DN2100 diameters is available upon request
Product Description
Butterfly Valve (Type 303) designed for regulating and shutting off the flow of working media.
A distinctive feature of this model compared to type 301 is the larger range of diameters and shortened face-to-face length, which allows installation in limited-space conditions. Additionally, the valve design features reduced weight.
Design features of the model:
- Shortened face-to-face length
- Replaceable seat sealing
- Lightweight construction
Sealing materials:
🔹 EPDM, NBR
Valve bodies can be manufactured from various materials depending on the application:
🔹 Ductile iron
EN-GJS-400-15 / GGG40
🔹 Carbon steel
A216 WCB (1.0619, GP240GH)
A216 WCB (1.0619, GP240GH) + EPDM
Valve discs can be made from the following materials:
🔹 Stainless steels (corrosion-resistant)
A351 CF8 (1.4308) / AISI 304 / A182 F304 (1.4301)
A351 CF8M (1.4408) / AISI 316 / A182 F316 (1.4401)
A351 CF3 (1.4306) / AISI 304L / A182 F304L
A351 CF3M (1.4409) / AISI 316L (1.4404)
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