Complete flexible sprinkler hose range for fast and easy installation
Flex hoses are designed to allow easier and faster installation sprinklers in a variety of situations. They are now CE-marked, ensuring European compliance, in addition to holding all major fire protection approvals from UL, FM, VdS, and LPCB. Available in a range of sizes and with many accessories, they offer flexibility and proven performance for sprinkler systems.
Features and advantages
- Fast and effortless installation: suitable for pendent, recessed, sidewall and concealed sprinklers
- Easy to use fittings: designed for efficient and simple on-site installation
- Multiple hose lengths: available to suit different installations and applications
- Multiple diameters: suitable for sprinklers up to K360
- Standard support bar: 700 mm bar fits most ceiling grids (longer versions available on request)
- Flexible routine: Multiple bends allowed
- Low equivalent length values
- Aid in positioning: Outlet fitting marked with distance from outlet to support accurate positioning

Fireking Viking VK40SB withVK32
S-Flex flexible sprinkler hoses
The S-Flex hose is a high-performance flexible sprinkler hose with improved hydraulic characteristics and new construction allowing it to be shaped more easily during installation. With its braided stainless-steel finish, S-Flex supports quick and efficient installation of sprinklers in commercial false ceiling applications. The S-Flex hose offers:
- Kink resistance: high resistance to kinking
- Tighter bend radius: allows easier bending compared to other FM approved or UL listed flexible sprinkler hoses
- Annular corrugation design: enables the S-Flex to be bent and shaped more easily
- New center clasp: allows users to close the unit with one hand
- Aid in positioning: Outlet nipple marked to indicate the distance from the under side of ceiling, supporting accurate sprinkler positioning

Fireking S-Flex with Viking VK462 concealed sprinkler
Accessories
Viking offers a wide range of approved accessories designed to support installation across many different situations. The components are available in various diameters, lengths and configurations, including:
- Outlet reducers
- Inlet nipples
- Side and center brackets
- Support bars
- Adaptors for cold-storage ceilings
These accessories are available with different finishes, including carbon steel and nitrile rubber.

Fireking S-Flex components: side bracket, centre bracket, inlet nipple, outlet nipple, support bar
Applications
Flexible sprinkler hoses (both standard flex hose assemblies and S-Flex hoses) are mainly used for quick and effortless sprinkler installation where flexibility and accurate positioning are required. Typical applications include:
- Commercial false ceiling: retail spaces, shopping centers
- Cold storage
- Offices
- Apartment buildings
- Renovation projects
We can also offer flexible hose products for protection of special risks such as:

- Ducts
- Cleanrooms
- Seismic applications
Downloads
Sprinkler & Deluge
Quick reference guide
Languages
Sprinkler & Deluge
Leaflet
Languages
Approvals
UL – FM– LPCB – VdS – CE
Image source: Fotolia/AdobeStock | Viking S.A.