close
Choose Your Site
Global
Social Media
Views: 0 Author: Site Editor Publish Time: 2026-08-14 Origin: www.maitoleadfitting.com
Fire sprinkler systems are one of the most important components in modern fire protection solutions. With the increasing complexity of building structures and ceiling designs, traditional rigid pipe installation methods may create challenges during sprinkler positioning and construction.
A flexible sprinkler hose provides an efficient connection solution between sprinkler branch pipes and sprinkler heads. It allows easier adjustment, faster installation, and improved adaptability compared with traditional rigid connections.
Maitolead Group supplies stainless steel flexible sprinkler hoses designed for automatic fire sprinkler systems, including unbraided flexible sprinkler hose and braided flexible sprinkler hose solutions for commercial, industrial, and construction applications.
A flexible sprinkler hose is a flexible connection component used between the fire sprinkler branch pipe and sprinkler head.
The main function is to provide a flexible connection that allows installers to adjust sprinkler head locations according to ceiling layouts.
A complete flexible sprinkler hose assembly usually includes:
· Stainless steel corrugated hose
· Inlet nipple
· Outlet nipple
· Reducer fitting
· Bracket assembly
· Installation accessories
Compared with rigid pipe connections, flexible sprinkler hoses help reduce installation difficulty and improve construction efficiency.
The hose body is manufactured from stainless steel corrugated tubing, providing:
· Good corrosion resistance
· Flexible bending performance
· Stable pressure performance
· Long service life
Flexible sprinkler hoses are available with different connection designs:
Used for standard sprinkler installations.
Suitable for applications requiring directional adjustment.
Provides convenient connection solutions for specific piping systems.
Available thread types:
· NPT
· BSPT
The installation bracket system helps maintain the correct sprinkler head position.
Available accessories include:
· Side bracket
· Center bracket
· Fast center bracket
· Ceiling bar
· Fixing screws
The unbraided flexible sprinkler hose features a stainless steel corrugated hose without an external braided layer.
Advantages:
· Lightweight structure
· High flexibility
· Easy installation
· Suitable for general sprinkler applications
The RF-100 series belongs to this category.
The braided flexible sprinkler hose adds an external stainless steel braided protection layer.
Advantages:
· Higher mechanical strength
· Better external protection
· Improved durability
· Suitable for demanding fire protection projects
RF-200 and RF-400 series belong to this category.
Features:
· Unbraided stainless steel flexible hose
· Straight nipple connection
· Flexible and lightweight design
Specifications:
Item | Specification |
Structure | Unbraided hose |
Connection | Straight nipple |
Working Pressure | 14 bar / 203 psi |
Connection Size | 1" × 1/2" or 3/4" |
Thread Type | NPT / BSPT |
Hose Diameter | OD 26.8mm |
Temperature | 66°C / 150°F |
Features:
· Stainless steel braided protection layer
· Straight nipple / elbow nipple / grooved connection options
Specifications:
Item | Specification |
Structure | Braided hose |
Certification | FM Approved / cULus Listed |
Working Pressure | 14 bar / 203 psi |
Hose Diameter | OD 26.8mm |
Connection | NPT / BSPT |
RF-400 adopts an advanced annular bellows design, providing higher flexibility and larger internal flow diameter.
Features:
· High flexibility
· Reduced friction loss
· Larger flow capacity
· Suitable for dry pendant sprinkler applications
Specifications:
Item | Specification |
Structure | Braided hose |
Certification | FM Approved / cULus Listed |
Working Pressure | 14 bar / 203 psi |
Hose Diameter | OD 35.0mm |
Flow Diameter | 26.0mm |
Minimum Bend Radius | 51mm |
Flexible sprinkler hoses simplify installation compared with rigid pipe modification.
Benefits:
· Reduced installation time
· Lower labor cost
· Easier adjustment
The hose allows sprinkler heads to be positioned accurately according to ceiling layouts.
Suitable for:
· Suspended ceilings
· Commercial interiors
· Complex building structures
Stainless steel materials provide:
· Corrosion resistance
· Mechanical strength
· Long-term reliability
Proper bending and installation are important to ensure the performance and service life of flexible sprinkler hoses.
Different hose structures require different bending inspection methods.
The RF-100 unbraided hose uses the outer edge check method.
During installation:
✓ Greater Than
The outer edge curve is larger than the reference area.
✓ Equal To
The outer edge curve reaches the reference position.
✘ Smaller Than
The outer edge curve is smaller than the reference area.
Excessive bending may affect hose performance and service life.
The RF-200 braided hose uses the inner edge check method.
During installation:
✓ Greater Than
The inner edge curve is larger than the reference area.
✓ Equal To
The inner edge curve meets the recommended position.
✘ Smaller Than
The inner edge curve is smaller than the reference area.
Avoid excessive bending or forced deformation.
Install the inlet nipple into the branch outlet interface of the water supply pipeline.
Use suitable pipe sealant such as:
· PTFE tape
· Pipe sealant
Recommended tightening torque:
· Inlet nipple: 50 N·m / 35 ft-lbs
· Hexagon slip nut: 28 N·m / 20 ft-lbs
Install side brackets onto the main rail of the T-bar ceiling grid.
Insert the square bar through the side brackets and place the center bracket in the middle.
Tightening torque:
· Side bracket bolts: 4 N·m / 3 ft-lbs
Adjust the flexible hose according to the required installation position.
Important:
· Do not twist the hose
· Avoid excessive bending
· Maintain the required bending radius
Insert the discharge nipple into the center bracket.
After positioning the sprinkler head, tighten the center bracket bolts.
Tightening torque:
· Center bracket bolts: 4 N·m / 3 ft-lbs
Tighten the slip nuts:
· 28 N·m / 20 ft-lbs
Install the sprinkler head according to the sprinkler manufacturer's instructions.
Finally, perform leakage testing according to applicable fire protection requirements.
lexible sprinkler hoses are widely used in:
· Commercial buildings
· Office buildings
· Hotels
· Shopping malls
· Industrial plants
· Warehouses
· Data centers
· Cleanrooms
· Public facilities
Before purchasing, consider:
Choose:
· Unbraided hose
· Braided hose
according to project requirements.
Confirm:
· Straight nipple
· Elbow nipple
· Grooved connection
Select products according to system working pressure.
Common standards:
· UL Listed
· FM Approved
Maitolead Group specializes in supplying fire protection products and industrial piping solutions for international customers.
Our flexible sprinkler hose solutions provide:
· Reliable stainless steel construction
· Multiple product options
· Complete installation accessories
· Professional export service
· Flexible solutions for different projects
We are committed to helping customers build safer and more efficient fire protection systems worldwide.
Flexible sprinkler hose has become an important solution for modern fire sprinkler systems. Compared with traditional rigid pipe connections, stainless steel flexible sprinkler hoses provide easier installation, better flexibility, and reliable performance.
From unbraided flexible sprinkler hoses for general applications to braided high-performance solutions for demanding projects, Maitolead Group provides professional fire protection solutions to meet different customer requirements.
