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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