Ball Valve 408 (2-piece body)
Technical Specifications
Nominal diameter DN 25-250 / NPS 1-10- Nominal pressure PN16-PN63 / CLASS 150-1500
- Medium temperature -60 °C ... +300 °C
- Types of Valve End Connections Flanged, welded
- 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, mm | L, mm | D, mm | D1, mm | D2, mm | f, mm | b, mm | n-ød, mm |
|---|---|---|---|---|---|---|---|
| 25 | 140 | 115 | 85 | 68 | 2 | 18 | 4-14 |
| 32 | 165 | 140 | 100 | 78 | 2 | 18 | 4-18 |
| 40 | 165 | 150 | 110 | 88 | 3 | 20 | 4-18 |
| 50 | 200 | 165 | 125 | 102 | 3 | 22 | 4-18 |
| 65 | 222 | 185 | 145 | 122 | 3 | 24 | 4-18 / 8-18 |
| 80 | 241 | 200 | 160 | 138 | 3 | 24 | 8-18 |
| 100 | 280 | 220 | 180 | 158 | 3 | 26 | 8-18 |
| 125 | 320 | 250 | 210 | 188 | 3 | 28 | 8-18 |
| 150 | 360 | 285 | 240 | 212 | 3 | 28 | 8-22 |
| 200 | 457 | 340 | 295 | 268 | 3 | 30 | 12-22 |
| 250 | 533 | 405 | 355 | 320 | 3 | 31 | 12-26 |
Product Description
Ball valve model 408 (2-piece body) is designed for on/off isolation in industrial piping, including refinery, petrochemical and energy applications.
The two-piece body provides access to the ball and seats for maintenance. Full-bore and reduced-bore versions are available. Body and ball materials, seat design and end connections are selected for the process conditions and project requirements.
Available configurations
- DN/PN: DN 25–250, PN 16–63;
- API/ASME: NPS 1–10, Class 150–1500;
- Ends: flanged or butt-weld (BW), depending on the version;
- Function: on/off isolation.
The available combinations of size, pressure rating, bore, material and end connection depend on the selected version.
Design features
- Two-piece body with access to the internal components;
- Full-bore or reduced-bore configuration;
- Replaceable ball and seats;
- Anti-blowout stem and antistatic device for versions specified with these features;
- Series temperature range: −60°C to +300°C. The permissible temperature of a particular valve depends on its body, ball, seat and sealing materials.
Process media
Water, steam, petroleum products and other industrial liquids or gases. Suitability for chemicals and corrosive media is determined by their composition, concentration and temperature, together with the materials of the ordered valve.
Body, ball and seat materials
| Component / material | ASTM / AISI | EN |
|---|---|---|
| Body | ||
| Cast carbon steel | ASTM A216 WCB | GP240GH (1.0619) |
| Forged carbon steel | ASTM A105 | P250GH (1.0460) |
| Cast stainless steel | ASTM A351 CF8 / CF8M | 1.4308 / 1.4408 |
| Stainless steel | AISI 304 / 316 | 1.4301 / 1.4401 |
| Ball | ||
| Cast stainless steel | ASTM A351 CF8 / CF8M | 1.4308 / 1.4408 |
| Stainless steel | AISI 304 / 316 | 1.4301 / 1.4401 |
| Seats | ||
| Soft seats | PTFE / RPTFE / PEEK | Selected for service |
| Metal seats | Metal-to-metal | Selected for service |
Additional stainless steel and duplex grades can be specified for selected versions. Cast and wrought grades are listed separately; the materials of the supplied valve are defined in the order documentation.
Standards by version
- Design: EN 1983 for the EN version; API 608, API 6D and ASME B16.34 as applicable to the specified API/ASME version;
- Face-to-face / end-to-end dimensions: EN 558 or ASME B16.10;
- Flanged ends: EN 1092-1 with the facing specified in the order, or ASME B16.5 with RF or RTJ facing;
- Butt-weld ends: ASME B16.25 for the specified API/ASME version; EN weld-end dimensions according to the approved drawing;
- Inspection and testing: EN 12266-1 / ISO 5208 or API 598, according to the ordered version.
Selection and documentation
Please specify the required DN/PN or NPS/Class, bore, end connection and flange facing, process medium, operating pressure and temperature, and preferred body, ball and seat materials. Applicable design standards and any additional features are confirmed for the ordered configuration.
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