Automatic sprinkler, water spray and deluge systems - RedBookLive

PART 3: SECTION 8.2
FLEXIBLE DROPS
Assembly
length, mm
Pre-calculated
Town’s mains
Pumped
Fully hydraulically
calculated
790 * No Yes Yes
915 ** No Yes Yes
1220 ** No Yes Yes
1525 ** No Yes Yes
1830 ** No Yes Yes
All pipework supplying Victaulic flexible sprinkler connection assemblies
shall be sized as distribution mains.
The above applications apply to Victaulic flexible drops with;
*up to 2 x 90° bends, with or without, a 90° sprinkler reducer,
** up to 3 x 90° bends, with or without, a 90° sprinkler reducer.
in pre-calculated systems
2. In a suspended ceiling Victaulic flexible sprinkler connections must be installed using AB1 bracket assemblies in
Accordance with the Victaulic Installation Guide, VicFlex TM Sprinkler Fittings - 10.85 REV Q.
3. In suspended ceilings, the outlet ferrule must be secured to the ceiling support system with
brackets supplied. For other applications the installer must supply brackets to ensure sprinkler
is secure.
Witzenmann GmbH
Ostl. Karl-Friedrich-Strasse 134, D-75175 Pforzheim, Postfach 1280, D-75112, Germany
Tel: +49 (0) 7231 5810 • Fax: +49 (0) 7231 581820
Certificate No: 398a
Hydra stainless steel flexible pressure hoses
Product Name Connections Nominal Size LPCB Ref. No.
Hydra RS 331 L 12/RS 321 L 12 Threaded DN16, DN20, DN25, DN32, DN40, DN50 (1) 398a/01
Hydra RS 331 L 12/RS 32I L 12 Flanged DN20, DN25, DN32, DN40, DN 50 (1) 398a/02
Hydra RS 330 L 12 Flanged DN65, DN80, DN100 (1) 398a/03
(1) The maximum working pressure for the ranges is 20 bar.
94 18 Jan 2014