Concentric Lugged Butterfly Valve
The BLAZE™ Concentric Lugged Butterfly Valve is a high-performance, bi-directional isolation and flow control valve designed for use in potable water, HVAC, plumbing, and industrial systems. The lug-type body features threaded inserts for secure bolting between flanges, making it ideal for end-of-line service and systems that require easy maintenance or disassembly. With a concentric disc and resilient-seated design, the valve ensures reliable sealing and smooth operation with minimal torque. The ductile iron body and Fusion Bonded Epoxy (FBE) coating provide excellent corrosion resistance, making it suitable for aggressive and potable water environments. Its robust construction and secure mounting make the lugged version ideal for applications where strength, safety, and versatility are essential.
| DN(mm) | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DN(inch) | 1-1/2 | 2 | 2-1/2 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 |
| A | 66 | 68.6 | 76 | 98.6 | 118.7 | 129.4 | 142 | 176 | 208.8 | 248.5 | 267 | 316 |
| B | 130 | 141.2 | 150.4 | 156.4 | 167.9 | 186.5 | 205.7 | 230.6 | 269.9 | 327.8 | 368 | 400 |
| C | 15 | 15 | 19 | 19 | 19 | 19 | 19 | 25 | 32 | 32 | 40 | 52 |
| L | 33 | 42 | 44.5 | 44.5 | 51 | 54.5 | 54.5 | 59.6 | 67 | 75.5 | 76 | 102 |
| DN(mm) | 450 | 500 | 550 | 600 | 650 | 700 | 750 | 800 | 900 | 1000 | 1200 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DN(inch) | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 | 36 | 40 | 48 |
| A | 334 | 370 | 433 | 468 | 484 | 530 | 554 | 602 | 661 | 713 | 850 |
| B | 422 | 480 | 533 | 562 | 540 | 626 | 660 | 666 | 722 | 806 | 938 |
| C | 52 | 64 | 70 | 70 | 70 | 95 | 95 | 95 | 130 | 130 | 130 |
| L | 114 | 127 | 151 | 151 | 172 | 165 | 167 | 188 | 203 | 216 | 254 |
Suitable Media:
- Potable water (WRAS approved)
- Heating water
- Non-corrosive oils
- Low-pressure air or gas (non-aggressive)
Operation:
Standard lever operation for sizes up to 8″.
Gear operator provided as standard for sizes above 8″.
Optional actuation available: electric or pneumatic (on request).
Description
- Replaceable Rubber seat with phenolic backed
- High Axiality of Pinned Shaft
- Low Pressure Loss
- Fusion Bonded Epoxy Powder Coating
- Size Range: 2″ to 24″ (DN50 to DN600-WRAS Approved) | 26″ to 48″ (DN650 to DN1200 – Standard)
Additional information
| Design Standard | BS 5155 |
|---|---|
| Working Pressure | 16 Bar |
| Flange Connection | ASME Class125/Class 150 |
| Working Temperature | -20°C to 110°C (EPDM Seat) |
| Coating | Blue (RAL5015) |
| Model Number | BT 1427 |
| Size Range | 2" to 24" (DN50 to DN600-WRAS Approved) |
