SPECflex™ SHP Performance Sprinkler Drops
Figure 22
Standards
National Fire Protection Association (NFPA)
- NFPA 13: Standard for the 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: No hangers are required for flexible connections as long as the length does not exceed 6 ft
American Society for 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
Factory Mutual (FM), FM Class No. 1637
- Approved standard for flexible sprinkler hose with threaded end fittings
Underwriter's Laboratories, Inc. (UL), UL 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)
Features
- Available lengths: 31", 36", 48", 60" and 72"
- Outlet sizes: 1/2" and 3/4"
- Includes pre-installation positioning and identification sleeve
- Max ambient temperature rating: 300° F
- Max working pressure rating: 300 psi (UL), 225 psi (FM)
- Minimum bend radius*: UL-2.5"/FM-6.5"
- Connection: Inlet-1" MNPT
- Hose Diameter: I.D. = 1.14" (29mm), O.D. = 1.38" (35mm)
Technical Data
- Hose type: Braided
- Hose: Stainless steel 304
- Nut and nipple: Zinc-plated steel
- Sealing gasket: EPDM
- Press ring (inner and outer): Stainless steel 304
- Isolation ring: Nylon
Installation
Please refer to NFP Specflex Installation Manuals for proper installation guidelines.
*DO NOT bend within 2.5" from connection nuts.
SH Hose Bracket Approvals
| BRACKET | APPROVED BRACKET ASSEMBLY |
|---|---|
| NFP240124 | FM, UL |
| NFP240724 | FM, UL |
| NFP240624 | FM, UL |
| NFP240148 | FM |
| NFP2403 | FM |
| NFP240424 | FM |
Braided Flexible Hose Diagram
Figure 22 illustrates the braided flexible hose and its components:
- 1. Tube
- 2. Isolation ring
- 3. Sealing gasket
- 4. Nut
- 5. Nipple (1")
- 6. Reducer
- 7. Braid
- 8. Press ring (inner)
- 9. Press ring (outer)
Friction Loss Data
The following table details friction loss data for various lengths and outlet connections:
| LENGTH (IN.) | MAX NUMBER OF 90° BENDS (UL) | MAX NUMBER OF 90° BENDS (FM) | OUTLET CONNECTION | K-FACTOR (UL) | K-FACTOR (FM) | EQUIVALENT LENGTH OF 1" SCHEDULE 40 PIPE (FT) (UL) | EQUIVALENT LENGTH OF 1" SCHEDULE 40 PIPE (FT) (FM) |
|---|---|---|---|---|---|---|---|
| 31" | 4 | 3 | 1/2" | 5.6 | 8.0 | 9.0 | 3.5 |
| 31" | 4 | 3 | 3/4" | 8.0 | 14.0 | 16.0 | 4.4 |
| 36" | 5 | 4 | 1/2" | 5.6 | 8.0 | 12.0 | 4.5 |
| 36" | 5 | 4 | 3/4" | 8.0 | 14.0 | 22.0 | 5.1 |
| 48" | 8 | 4 | 1/2" | 5.6 | 8.0 | 19.0 | 6.9 |
| 48" | 8 | 4 | 3/4" | 8.0 | 14.0 | 34.0 | 8.4 |
| 60" | 10 | 4 | 1/2" | 5.6 | 8.0 | 26.0 | 9.4 |
| 60" | 10 | 4 | 3/4" | 8.0 | 14.0 | 40.0 | 10.9 |
| 72" | 12 | 4 | 1/2" | 5.6 | 8.0 | 37.0 | 11.9 |
| 72" | 12 | 4 | 3/4" | 8.0 | 14.0 | 46.0 | 13.4 |
*UL: 2.5" minimum bend radius, where C=120
*FM: 6.5" minimum bend radius, where C=120
Ordering Code Matrix
The ordering code matrix for NFP Specflex SHP Performance Sprinkler Drops is as follows:
Model: NFP 22
Format: NFP 22 – XX – X
Length Codes: 31" = 31, 36" = 36, 48" = 48, 60" = 60, 72" = 72
Outlet Size Codes: 1/2" = D, 3/4" = F
