Tyco FASTFLEX YN25 - LPCB Design Criteria; VdS Design Criteria

TFP720
Page 6 of 10
LPCB - Design Criteria
• Refer to Table A for Model, Nominal Assembly Length,
and Sprinkler Reducer combinations.
• Wet-pipe systems only.
• Maximum service pressure of 16 bar.
• Pendent sprinklers with nominal K57, K80, or K115.
• Maximum ambient temperature of 148°C for YN25.
• Approved as a Type 2 hose of moderate exibility in
accordance with LPS 1261. They may be used in ap-
plications where little or mo differential movement be-
tween the two ends is expected after installation (e.g.,
supply to single sprinklers in suspended ceilings).
• Approved for the following locations:
Assembly
Length in
Millimeters
Pre-Calculated
Town Mains
Pre-Calculated
Pumps
Fully
Hydraulically
Calculated
Up to 700 Yes Yes Yes
Up to 1200 No Yes Yes
Up to 3700 No No Yes
• All pipe work supplying FASTFLEX in pre-calculated
systems shall be sized as distribution mains.
• In suspended ceilings FASTFLEX must be installed in
accordance with this data sheet.
• In suspended ceiling, sprinkler reducer must be con-
nected to the ceiling support system with brackets
supplied. For other applications the installer must
supply brackets to ensure sprinkler is secure.
• Minimum bend radius of 55 mm.
• LPCB Friction Loss for YN25.
Assembly
Length in
Millimeters
Number of
90° Bends
Equivalent Length* of
DN25 Sch. 40 Pipe at
C=120 in Meters
700 2 8,9
1000 2 13,5
1200 2 11, 9
1500 2 18,7
1800 3 24,7
2000 3 20,7
2500 3 21,7
2700 3 24,2
3100 3 25,9
3700 3 30,3
* Add 2,3 meters when using a 45° or 90° sprinkler reducer.
VdS - Design Criteria
• Refer to Table A for Model, Nominal Assembly Length,
and Sprinkler Reducer combinations.
• Wet-pipe systems only.
• Maximum service pressure of 16 bar.
• Pendent sprinklers with nominal K57, K80, or K115.
• Maximum ambient temperature of 107°C for YB25
and YB28.
• Approved for use only in the following suspended
ceilings:
Odenwald Systems- S3 & S15
Richter Systems- 11.1 - 11.5
Armstrong Systems- Board and Tegular with panel
type “Prima Sahara”
API Systems- 15/38, 24/38, 24/60, 35/38, and 35/60
with panel type of a.m.
• VdS Friction Loss
For compensation of pressure loss, the nominal as-
sembly length is to be multiplied by 12. The resulting
length will provide pressure drop in equivalent length
DN20 (26,9 x 2,3 mm) seamless metal tube per DIN
2448.
• Add 2,3 m when using a 45° or 90° sprinkler reducer.
• Minimum bend radius of 55 mm.
• The tube assembly may not have more than one 90°
bend or four 15° bends.