Duckbill Check Valves & Pinch Valve Sleeves
For applications including hard wall suction and discharge hose, soft wall dishcarge hose in slurry pipe line, and specialty trunnion hose for suction cutter dredge. In addition to the high-wear-resistance rubber elastic inner liner, the ceramic tile inner liner can provide superior wear resistance.Expertly crafted to transfer of abrasive slurries, mineral processing.plants, tailings lines, sand and gravel. Other applications also available on engineering.
Features:
▪ Ideal for abrasive or slurry services
▪ Maintains a smooth, continuous interior bore
▪ Minimizes turbulence & prevents solid accumulation
Benefits:
▪ Prevents Clogging – Ideal for slurries and wastes
▪ Resists Abrasion – Smooth bore extends service life
▪ Controls Movement – for specific piping stresses
Technical Specifications
| Size | DN50-1800 |
|---|---|
| Lengths | As request |
| Types | |
| Standard | |
| Sloped bottom | |
| Custom | |
| Connetions Types | Slip on |
| Flanged | |
| Conneting Method | |
| Anchor bolting with external /internal clamps | |
| Flange bolting with retaining ring | |
| Flange Drillings | ASME, BS, SABS, JIS, DIN, custom |
| Rings / Clamps | Carbon steel, SUS304,316 |
| Safety Factor | 4:1 |
| Cracking Pressure | 25kPa (1"–2" water head; low-loss operation) |
| Temperature Rating | -30°C to +121°C (material-dependent) |
Material Specifications
| Duckbill Sleeve | NR,Chlorobutyl, EPDM, Neoprene, Nitrile |
|---|---|
| Reinforcement | High-tensile polyester tire cord |
| Outer Cover | Abrasion and weather resistant elastomer |
| End Frames | Carbon steel (painted/galvanized) |
| Stainless Steel (304/316) |
Standard Properties
| Valve Size | Liner Thickness | Face-to-Face Length | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Std | Max | Min | Max | ||||||
| DN | in | mm | in | mm | in | mm | in | mm | mm |
| 100 | 4 | 102 | 1/4 | 6 | 1/2 | 12 | 10.3 | 262 | As Request |
| 150 | 6 | 152 | 1/4 | 6 | 1/2 | 12 | 12.8 | 325 | As Request |
| 200 | 8 | 204 | 3/8 | 9 | 5/8 | 15 | 15 | 381 | As Request |
| 250 | 10 | 250 | 3/8 | 9 | 3/4 | 19 | 17.9 | 455 | As Request |
| 300 | 12 | 300 | 3/8 | 9 | 3/4 | 19 | 20.4 | 518 | As Request |
| 350 | 14 | 350 | 1/2 | 12 | 3/4 | 19 | 22.9 | 582 | As Request |
| 400 | 16 | 400 | 1/2 | 12 | 3/4 | 19 | 24.3 | 617 | As Request |
| 450 | 18 | 450 | 1/2 | 12 | 3/4 | 19 | 26.6 | 676 | As Request |
| 500 | 20 | 500 | 1/2 | 12 | 3/4 | 19 | 29.2 | 742 | As Request |
| 550 | 22 | 550 | 1/2 | 12 | 3/4 | 19 | 32.12 | 816 | As Request |
| 600 | 24 | 600 | 5/8 | 15 | 3/4 | 19 | 38 | 965 | As Request |
| 650 | 26 | 650 | 5/8 | 15 | 3/4 | 19 | 39 | 991 | As Request |
| 700 | 28 | 700 | 5/8 | 15 | 3/4 | 19 | 41.7 | 1059 | As Request |
| 750 | 30 | 750 | 5/8 | 15 | 1 | 25 | 43.2 | 1097 | As Request |
| 800 | 32 | 800 | 5/8 | 15 | 1 | 25 | 44.9 | 1140 | As Request |
| 900 | 36 | 900 | 3/4 | 19 | 1 1/4 | 30 | 52.6 | 1336 | As Request |
| 1000 | 40 | 1000 | 3/4 | 19 | 1 1/4 | 30 | 58 | 1473 | As Request |
| 1100 | 44 | 1100 | 3/4 | 19 | 1 1/2 | 40 | 58.52 | 1486 | As Request |
| 1200 | 48 | 1200 | 3/4 | 19 | 1 1/2 | 40 | 63.5 | 1613 | As Request |
| 1300 | 42 | 1300 | 3/4 | 19 | 1 1/2 | 40 | 67.6 | 1717 | As Request |
| 1400 | 46 | 1400 | 1 | 25 | 2 | 50 | 72.8 | 1849 | As Request |
| 1500 | 50 | 1500 | 1 | 25 | 2 | 50 | 73.8 | 1875 | As Request |
| 1800 | 72 | 1800 | 1 | 25 | 2 | 50 | 86.5 | 2197 | As Request |
Customisable size available in non-standard specifications on request.
Features:
▪ Ideal for abrasive or slurry services
▪ Maintains a smooth, continuous interior bore
▪ Minimizes turbulence & prevents solid accumulation
Benefits:
▪ Prevents Clogging – Ideal for slurries and wastes
▪ Resists Abrasion – Smooth bore extends service life
▪ Controls Movement – for specific piping stresses
Technical Specifications
| Diameter | DN50-1500 |
|---|---|
| Lengths | As request |
| Types | |
| Full port | |
| Double Wall | |
| cone | |
| Reduced Port | |
| Variable orifices | |
| Temperature Rating | Up to +80°C (material dependent) |
| Flange Drillings | ASME, BS, SABS, JIS, DIN, custom |
| End Connection | |
| Cuff flange | |
| double flange | |
| Options | Vacuum & conical sleeves |
| Safety Factor | 4:1 |
Material Specifications
| Inner Liner | SBRT, EPDM, NBR, NR, PU, CSM, HNBR |
|---|---|
| Reinforcement | Multiply Biasply fabric |
| Outer Cover | Abrasion and weatherresistant elastomer |
| End Connections | Cuff flange |
| double flange |
Standard Properties
| Size | Liner Thickness | Working Pressure | Face-to-Face Length | ||||
|---|---|---|---|---|---|---|---|
| Std | Max | Max | Min | Max | |||
| DN | in | mm | mm | mm | Psi | mm | mm |
| 100 | 4 | 102 | 6 | 12 | 150 | 400 | As Request |
| 150 | 6 | 152 | 6 | 12 | 150 | 450 | As Request |
| 200 | 8 | 204 | 6 | 12 | 125 | 540 | As Request |
| 250 | 10 | 250 | 9 | 15 | 100 | 675 | As Request |
| 300 | 12 | 300 | 9 | 19 | 100 | 750 | As Request |
| 350 | 14 | 350 | 9 | 19 | 75 | 700 | As Request |
| 400 | 16 | 400 | 12 | 19 | 50 | 900 | As Request |
| 450 | 18 | 450 | 12 | 19 | 50 | 900 | As Request |
| 500 | 20 | 500 | 12 | 19 | 50 | 1000 | As Request |
| 550 | 22 | 550 | 12 | 19 | 50 | 1100 | As Request |
| 600 | 24 | 600 | 12 | 19 | 50 | 1200 | As Request |
| 650 | 26 | 650 | 15 | 19 | 50 | 1300 | As Request |
| 700 | 28 | 700 | 15 | 19 | 50 | 1400 | As Request |
| 750 | 30 | 750 | 15 | 19 | 50 | 1500 | As Request |
| 800 | 32 | 800 | 15 | 25 | 50 | 1600 | As Request |
| 900 | 36 | 900 | 19 | 25 | 50 | 1800 | As Request |
| 1000 | 40 | 1000 | 19 | 30 | 50 | 2000 | As Request |
| 1100 | 44 | 1100 | 19 | 30 | 50 | 2200 | As Request |
| 1200 | 48 | 1200 | 19 | 32 | 50 | 2400 | As Request |
| 1300 | 42 | 1300 | 19 | 40 | 50 | 2600 | As Request |
| 1400 | 46 | 1400 | 19 | 40 | 50 | 2800 | As Request |
| 1500 | 50 | 1500 | 19 | 40 | 50 | 3000 | As Request |
Customisable size available in non-standard specifications on request.
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