Dunham Rubber & Belting Corporation
682 Commerce Parkway West Dr.
Greenwood, IN 46143
Toll-free: 800.876.5340
Tel: 317.888.3002
Fax: 317.888.2335
Email: mail@dunhamrubber.com • Website: www.dunhamrubber.com
All Categories > Sanitary Hose and Fittings > High Purity Tubing, Hose & Fittings > Sanitary Hose > Fluoropolymer-Lined Hose (incl. PTFE, FEP & PFA) > Convoluted Bore Flouropolymer-Lined Hose > TWOK & TBOK Series Hose (Kynar® Braid) > Item # 48TWOK  


TWOK & TBOK Series Hose (Kynar® Braid)

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Item # 48TWOK, TWOK & TBOK Series Hose (Kynar® Braid)
List Price QUOTE

Chemfluor® PTFE Helically Convoluted Inner Tube
PVDF (Kynart®) Braid
Open Pitch

Features and Benefits

Chemfluor® PTFE inner tube
PVDF (Kynar®) braid
  • For severe applications in hostile environments where external corrosion from the presence of strong acids will attack standard stainless steel braid
  • Ultraviolet stabilized





Specifications  · Applications  · Common Media  · Details  · Engineering Specifications  · Industry Approvals & Compliances  · Pressure Rating

Specifications

Inside Diameter
3.00 in
76.2 mm

Outside Diameter
3-7/8 in
99.1 mm

Max. Length
30 ft

Max. Working Pressure1
100 psi
0.69 MPa

Min. Burst Pressure2
400 psi
2.76 MPa

Min. Bend Radius
12.00 in
304.80 mm

Vacuum Hg (@ 70ºF)3
29.9 in
75.95 mm

Inner Tube
Chemfluor® White

Weight
1.50 lbs/ft
2.24 kg/m
1 Working pressure is given at room temperature. Decrease working pressure to 50 psig for all sizes above 175 ºF.
2 Burst pressure ratings at ambient 70 ºF (21 ºC). See below on vacuum/pressure ratings at temperatures other than ambient.
3 Vacuum rating all sizes: 29.9" Hg @ 70 ºF. Decrease working pressure rating 1% for every 2 ºF above 175 ºF. 1-1/2" rated @ 24' Hg; 2" rated @ 20" Hg when installed less than 2X minimum bend radius.


Applications
  • Sanitary transfer
  • Food, flavors and syrups
  • Solvent transfer
  • Drain and sample lines
  • Semi-transparent sight gauges
  • Corrosive environments (external)
  • Liquid chlorine and bromine transfer
  • Chlorinated fluid and gas transfer


Common Media
  • Base chemicals
  • Corn syrup
  • Product transfer
  • Caustic solutions
  • Liquid chlorine
  • Bromine


Details
Construction:
  • Inner Tube:
    -Chemfluor® white PTFE
  • Reinforcement:
    -Heavy duty PVDF monofilament
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


Engineering Specifications
Temperature Rating
  • -40ºF to +275ºF
  • -40ºC to +135ºC


Industry Approvals & Compliances
  • USDA
  • FDA
  • Pharmacopeia Class VI


Pressure Rating
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 50 psig for all sizes above 175 ºF.
Vacuum rating all sizes: 29.9" Hg @ 70 ºF. Decrease working pressure rating 1% for every 2 ºF above 175 ºF. 1-1/2" rated @ 24' Hg; 2" rated @ 20" Hg when installed less than 2X minimum bend radius.