B3500 – Lug Butterfly Valve
The BARIQ B3500 is a resilient-seated lug butterfly valve for isolation and flow control in hydronic HVAC systems. Its ductile iron body features a 300-micron epoxy coating with a CF8 stainless steel disc and EPDM seat.
Technical Specifications
| Product range | DN50-DN600 |
|---|---|
| Pressure rating | PN16 (16 bar) |
| Connection | Lug type, ANSI / ASME B16.5 Class 150 |
| Body | Ductile iron |
| Coating | Epoxy, 300 microns |
| Disc | CF8 stainless steel |
| Stem | SS304 stainless steel |
| Seat / O-rings | EPDM |
| Bushings | Reinforced PTFE |
| Operator | Worm gear with handwheel; lever or gear operated |
| Temperature range | -20 to +120 °C (EPDM) |
| Application | Hydronic HVAC water systems |
Design & Test Standards
| Design | API 609 |
|---|---|
| Face-to-face | API 609 |
| Pressure test | API 598 |
| Flange compatibility | ANSI / ASME B16.5 Class 150 |
| Operator mounting | ISO 5211 |
Dimensions
Dimensions in millimetres.
| DN | NPS | A | B | C | L |
|---|---|---|---|---|---|
| 50 | 2 | 80 | 169 | 32 | 43 |
| 65 | 2 1/2 | 89 | 176 | 32 | 46 |
| 80 | 3 | 95 | 183 | 32 | 46 |
| 100 | 4 | 114 | 201 | 32 | 52 |
| 125 | 5 | 127 | 214 | 32 | 56 |
| 150 | 6 | 139 | 229 | 32 | 56 |
| 200 | 8 | 175 | 257 | 45 | 60 |
| 250 | 10 | 203 | 280 | 45 | 68 |
| 300 | 12 | 242 | 327 | 45 | 78 |
The product range extends to DN600; the dimensional table above covers DN50-DN300 as listed in the datasheet.
Design Highlights
- Resilient-seated lug body for reliable shut-off and flow control.
- CF8 stainless steel disc for corrosion resistance.
- EPDM seat suitable for hydronic water service.
- ISO 5211 mounting for lever, gearbox or actuator options.
- 300-micron epoxy-coated ductile iron body.
Typical Applications
- Hydronic HVAC systems
- Water isolation service
- Flow control in water networks