ANCHORING, HANGING AND SUPPORTS
Hangers for straight runs
Lede grooved couplings are designed to hold axial
thrusts 4-5 times their rated working pressure, though the strength against bending movement is less than that of steel pipe. The joint may be damaged when a bending movement greater than the allowed deflection occurs.
System designers should provide anchors (main and
intermediate) and pipe guides with proper spacing to protect the system from unexpected large bending movements.
These illustrations are examples only, and are not
intended to be used for all installations as conditions and requirements vary from job to job. Reliance on general data
or information contained herein shall be at the user’s sole risk and without obligation to Lede.
Hangers shall be designed to support five times the
weight of water-filled pipe plus 250 lb (115 kgs) at each point of pipe support (NFPA 13 9.1.1.1.). The following illustrations are examples of acceptable hanger types and size per NFPA 13.
For straight runs, you can use bothflexible and rigid
couplings. When rigid couplings are used, the same hanger spacing as other piping methods can be applied. You can refer to the hanger spacing standards of ANSI B31.1 Power Piping Code, B31.9 Building Services Piping Code, NFPA 13
Sprinkler Systems, or Mechanical Equipment Construction
Guide (Japan). See the table below.
Hanger locations on straight runs where flexible
couplings are used When flexible couplings are used on straight runs, location of hangers shall be designed as close to each coupling as possible, or within a distance of less than 1/6
the span.
1) ANSI B31.1 Power Piping Code 2) ANSI B31.9 Building Services Piping Code
3) NFPA 13 Sprinkler systems
4) Ministry of Land & Transportation of Japan: Mechanical Equipment
Construction Guide

1/252.12.73.72.02.72.71.25/322.13.43.72.02.73.41.5/402.13.74.62.02.74.02/503.14.04.62.04.04.63/803.74.64.62.04.65.24/1004.35.24.62.05.26.46/1505.26.14.63.06.47.68/2005.86.44.63.07.38.510/2505.86.43.07.39.512/3007.06.43.09.110.114/3507.06.49.110.116/4008.26.410.710.118/4508.26.410.710.120/5009.16.411.910.124/6009.86.412.810.11) 2) 1) 2) 3) 4)Nominal
Pipe Size
in/mmWater Service
(meters)Gas or Air Service
(meters)Suggested Max. Span between Supports
(steel pipe)

Pipe size
inD dimension
in/mm~25/16 (7.9)2-1/2 ~ 63/8 (9.5)81/2 (12.7)

D
dimension
D
dimension
D
dimension
Wraparound
U-hook
Adjustable swivel
Ring - rod tight
to pipe
U-Hook sizes

Pipe size
inD dimension
in/mm~ 43/8 (9.5)5 ~ 41/2 (12.7)10 ~ 125/8 (15.9)

Rod sizes

Pipe size
inD dimension
in/mm~ 43/8 (9.5)5 ~ 61/2 (12.7)10 ~ 123/4 (15.1)

Eye rod sizes