Dunham Rubber & Belting Corporation
Dunham Rubber & Belting Corporation
682 Commerce Parkway West Drive, Greenwood, IN 46143
Toll Free: 800.876.5340
Tel: 317.888.3002
Fax: 317.888.2335
Email: mail@dunhamrubber.com
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Chemfluor® PTFE Fluoropolymer Helically Convoluted Inner Tube
Polypropylene Braid
Open Pitch

Features and Benefits

Chemfluor® PTFE inner tube
Polypropylene braid
  • Ultraviolet stabilized
  • Offers good chemical resistance against many types of acids
  • Resists abrasion better than stainless steel reinforcements
  • Lightweight, with minimum force to bend
    -Easy to transport, connect and disconnect
    -Less strain on adjoining equipment/scales
  • Braid fraying minimized, reducing risk of hand injuries from wire braid punctures
  • Does not conduct internal heat as readily as stainless steel braided hoses
  • Burn potential from incidental contact greatly reduced
TWOY & TBOY Series Hose (Polypropylene Braid)
Unit of Measure
Items TWOY & TBOY Series Hose (Polypropylene Braid)
12TWOY
TWOY & TBOY Series Hose (Polypropylene Braid) 		TWOY & TBOY Series Hose (Polypropylene Braid) (12TB0Y)
12TBOY
TWOY & TBOY Series Hose (Polypropylene Braid) 		TWOY & TBOY Series Hose (Polypropylene Braid)
16TWOY
TWOY & TBOY Series Hose (Polypropylene Braid) 		TWOY & TBOY Series Hose (Polypropylene Braid) (12TB0Y)
16TBOY
TWOY & TBOY Series Hose (Polypropylene Braid) 		TWOY & TBOY Series Hose (Polypropylene Braid)
20TWOY
TWOY & TBOY Series Hose (Polypropylene Braid)
Inside Diameter N/A 0.75 in19.1 mm N/A 0.75 in19.1 mm N/A 1.0 in25.4 mm N/A 1.0 in25.4 mm N/A 1.25 in31.8 mm
Outside Diameter N/A 1-3/8 in33.0 mm N/A 1-3/8 in33.0 mm N/A 1-1/2 in36.8 mm N/A 1-1/2 in36.8 mm N/A 1-7/8 in45.7 mm
Max. Length N/A 100 ft N/A 100 ft N/A 70 ft N/A 70 ft N/A 65 ft
Max. Working Pressure1 N/A 250 psi1.72 MPa N/A 250 psi1.72 MPa N/A 250 psi1.72 MPa N/A 250 psi1.72 MPa N/A 200 psi1.38 MPa
Min. Burst Pressure2 N/A 1000 psi6.90 MPa N/A 1000 psi6.90 MPa N/A 1000 psi6.90 MPa N/A 1000 psi6.90 MPa N/A 800 psi5.52 MPa
Min. Bend Radius N/A 2.75 in69.85 mm N/A 2.75 in69.85 mm N/A 4.00 in101.60 mm N/A 4.00 in101.60 mm N/A 4.50 in114.30 mm
Vacuum Hg (@ 70ºF)3 N/A 29.9 in75.95 mm
Inner Tube N/A Chemfluor® White N/A Chemfluor® Black N/A Chemfluor® White N/A Chemfluor® Black N/A Chemfluor® White
Weight N/A 0.23 lbs/ft0.34 kg/m N/A 0.23 lbs/ft0.34 kg/m N/A 0.30 lbs/ft0.45 kg/m N/A 0.30 lbs/ft0.45 kg/m N/A 0.50 lbs/ft0.75 kg/m
Applications N/A
  • Sanitary transfer
  • Food, flavors and syrups
  • Solvent transfer
  • Drain and sample lines
  • Semi-transparent sight gauges
  • Corrosive environments
Common Media N/A
  • Base chemicals
  • Corn syrup
  • Product transfer
  • Caustic solutions
 		N/A
  • Base chemicals
  • Corn syrup
  • Hexane
  • Product transfer
  • Caustic solutions
 		N/A
  • Base chemicals
  • Corn syrup
  • Product transfer
  • Caustic solutions
 		N/A
  • Base chemicals
  • Corn syrup
  • Hexane
  • Product transfer
  • Caustic solutions
 		N/A
  • Base chemicals
  • Corn syrup
  • Product transfer
  • Caustic solutions
Details N/A Construction:
  • Inner Tube:
    -Chemfluor® white PTFE
  • Reinforcement: 316 stainless steel braid
    -Polypropylene braid
    -Each strand of large diameter (denier) Polypropylene monofilament is twisted and subsequently twined prior to braiding
    -Tested for maximum abrasion and chemical resistance
    -Tightly woven braid offers excellent abrasion resistance
Fittings:
  • PermaSeal crimp-style
    -Over 40 styles of 316L stainless steel conventional fitting designs
  • Flare-Thru fittings and adapters technology available:
    -150# epoxy-coated carbon steel lap-joint style flanged (standard)
    -304 and 316 stainless steel flanges available (optional)
    -Female cam and groove (swivel style); 316 stainless steel body
    -Sanitary clamp style
 		N/A Construction:
  • Inner Tube:
    -Chemfluor® black PTFE electrostatic dissipating conductive
  • Reinforcement: 316 stainless steel braid
    -Polypropylene braid
    -Each strand of large diameter (denier) Polypropylene monofilament is twisted and subsequently twined prior to braiding
    -Tested for maximum abrasion and chemical resistance
    -Tightly woven braid offers excellent abrasion resistance
Fittings:
  • PermaSeal crimp-style
    -Over 40 styles of 316L stainless steel conventional fitting designs
  • Flare-Thru fittings and adapters technology available:
    -150# epoxy-coated carbon steel lap-joint style flanged (standard)
    -304 and 316 stainless steel flanges available (optional)
    -Female cam and groove (swivel style); 316 stainless steel body
    -Sanitary clamp style
 		N/A Construction:
  • Inner Tube:
    -Chemfluor® white PTFE
  • Reinforcement: 316 stainless steel braid
    -Polypropylene braid
    -Each strand of large diameter (denier) Polypropylene monofilament is twisted and subsequently twined prior to braiding
    -Tested for maximum abrasion and chemical resistance
    -Tightly woven braid offers excellent abrasion resistance
Fittings:
  • PermaSeal crimp-style
    -Over 40 styles of 316L stainless steel conventional fitting designs
  • Flare-Thru fittings and adapters technology available:
    -150# epoxy-coated carbon steel lap-joint style flanged (standard)
    -304 and 316 stainless steel flanges available (optional)
    -Female cam and groove (swivel style); 316 stainless steel body
    -Sanitary clamp style
 		N/A Construction:
  • Inner Tube:
    -Chemfluor® black PTFE electrostatic dissipating conductive
  • Reinforcement: 316 stainless steel braid
    -Polypropylene braid
    -Each strand of large diameter (denier) Polypropylene monofilament is twisted and subsequently twined prior to braiding
    -Tested for maximum abrasion and chemical resistance
    -Tightly woven braid offers excellent abrasion resistance
Fittings:
  • PermaSeal crimp-style
    -Over 40 styles of 316L stainless steel conventional fitting designs
  • Flare-Thru fittings and adapters technology available:
    -150# epoxy-coated carbon steel lap-joint style flanged (standard)
    -304 and 316 stainless steel flanges available (optional)
    -Female cam and groove (swivel style); 316 stainless steel body
    -Sanitary clamp style
 		N/A Construction:
  • Inner Tube:
    -Chemfluor® white PTFE
  • Reinforcement: 316 stainless steel braid
    -Polypropylene braid
    -Each strand of large diameter (denier) Polypropylene monofilament is twisted and subsequently twined prior to braiding
    -Tested for maximum abrasion and chemical resistance
    -Tightly woven braid offers excellent abrasion resistance
Fittings:
  • PermaSeal crimp-style
    -Over 40 styles of 316L stainless steel conventional fitting designs
  • Flare-Thru fittings and adapters technology available:
    -150# epoxy-coated carbon steel lap-joint style flanged (standard)
    -304 and 316 stainless steel flanges available (optional)
    -Female cam and groove (swivel style); 316 stainless steel body
    -Sanitary clamp style
Engineering Specifications N/A Temperature Rating
  • -40ºF to +250ºF
  • -40ºC to +121ºC
Industry Approvals & Compliances N/A
  • USDA
  • FDA
  • Pharmacopeia Class VI
 		N/A
  • USDA
  • Pharmacopeia Class VI
 		N/A
  • USDA
  • FDA
  • Pharmacopeia Class VI
 		N/A
  • USDA
  • Pharmacopeia Class VI
 		N/A
  • USDA
  • FDA
  • Pharmacopeia Class VI
Pressure Rating N/A Burst Pressure ratings at ambient 70ºF (21ºC). See below on vacuum/pressure ratings at temperatures other than ambient.
Working Pressure is given at room temperature. Decrease working pressure to 40 psig for all sizes above 175ºF.
Vacuum Rating all sizes: 29.9" Hg @ 70ºF. Decrease working pressure rating 1% for every 2ºF above 150ºF. 1-1/4" rated @ 26 Hg; 1-1/2" rated @ 24" Hg; 2" rated @ 20" Hg when installed less than 2X minimum bend radius.
  • 1 Working Pressure is given at room temperature. Decrease working pressure to 40 psig for all sizes above 175ºF.
  • 2 Burst pressure ratings at ambient 70ºF (21ºC). See below on vacuum/pressure ratings at temperatures other than ambient.
  • 3 Vacuum Rating all sizes: 29.9" Hg @ 70ºF. Decrease working pressure rating 1% for every 2ºF above 150ºF. 1-1/4" rated @ 26 Hg; 1-1/2" rated @ 24" Hg; 2" rated @ 20" Hg when installed less than 2X minimum bend radius.