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Unbraided Flexible Hose

Our unbraided flexible sprinkler hoses are available with either a 1/2″ or 3/4″ outlet, and in five different lengths: 28″, 40″, 48″, 60″, and 67″. These hoses have a maximum temperature rating of 225°F and a maximum pressure rating of 175 psi.

-Stainless Steel 304 Hose
-Zinc-plated Steel (Nut & Nipple)
-EPDM Sealing Gasket
-Nylon Isolation Ring
-UL Listed

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Models

  • 1/2” Connection
    Outlet SizePart #Description
    1/2″KFU 2281/2″ FIP x 1″ MIP
    1/2″KFU 2401/2″ FIP x 1″ MIP
    1/2″KFU 2481/2″ FIP x 1″ MIP
    1/2″EFU 2601/2″ FIP x 1″ MIP
    1/2″EFU 267
    1/2″ FIP x 1″ MIP
  • 3/4” Connection
    Outlet SizePart #Description
    3/4″KFU 3283/4″ FIP x 1″ MIP
    3/4″KFU 3403/4″ FIP x 1″ MIP
    3/4″KFU 3483/4″ FIP x 1″ MIP
    3/4″KFU 3603/4″ FIP x 1″ MIP
    3/4″KFU 3673/4″ FIP x 1″ MIP

Technical Data


UNBRAIDED FLEXIBLE SPRINKLER DROPS APPLIANCE STANDARDS

National Fire Protection Association (NFPA):  
NFPA 13: Standard for installation of sprinkler systems
NFPA 13D: Standard for the installation of sprinkler systems in one and two-family dwellings and manufactured homes
NFPA 13R: Standard for installation of sprinkler systems in residential occupancies up to and including four stories in height
NFPA 13 Section 9.2.1.3.3.3: Hangers are not required for flexible connections as long as the length does not exceed 6 ft.

American Society of Testing and Methods (ASTM):  
ASTM C635: Standard specifications for the manufacture, performance, and testing of metal suspension systems for acoustical tile and lay-in panel ceilings  
ASTM C636: Standard practice for installation of metal ceiling suspension systems for acoustical tile and lay-in panels

Underwriters Laboratories, Inc. (UL/ULC), cUL us 2443: 
Standard for flexible sprinkler hose with fittings for fire protection service

International Building Code (IBC) Section 1621/American Society of Civil Engineers (ASCE) 7 9.6.2.6.2 & 9.6.2.6.2.2:  
Flexible sprinkler connections are the alternative solution to install without seismic escutcheons (oops ring)

UNBRAIDED FLEXIBLE HOSE DIAGRAM






 

  1. Tube
  2. Isolation Ring
  3. Sealing Ring
  4. Nut
  5. Nipple (1”)
  6. Reducer


SPECIFICATIONS

Lengths Available28”, 40”, 48”, 60”, and 67”
Outlet1/2” or 3/4”
Hose TypeUnbraided

HoseStainless Steel 304
Nut & NippleZinc-Plated Steel
Sealing Gasket/Isolation RingEPDM/Nylon
Max.Temp
225°F
Max.Pressure
175 psi
Minimum Bend Radius4” 
DO NOT bend within 2.52 inches
from connection nuts
ConnectionInlet 1” NPT
Outlet
1/2” or 3/4” NPT

Friction Loss Data

KFU Series Unbraided Hose / TBSS

LengthOutlet ConnectionK-FactorMax. # of 90° BendsEquivalent Length of 1 in. Schedule 40 Pipe, ft.
28″1/2″5.6223
3/4″8.0228
40″1/2″5.6339′
3/4″8.0340
48″1/2″5.6348
3/4″8.0351
60″1/2″5.6450
3/4″8.0465
67″1/2″5.6468
3/4″8.0470

UL: 4” Minimum bend radius, where C=120

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