[Title 24 CFR 3280.605]
[Code of Federal Regulations (annual edition) - May 1, 2001 Edition]
[Title 24 - HOUSING AND URBAN DEVELOPMENT]
[Chapter Xx - OFFICE OF ASSISTANT SECRETARY FOR HOUSING--FEDERAL HOUSING]
[Part 3280 - MANUFACTURED HOME CONSTRUCTION AND SAFETY STANDARDS]
[Subpart G - Plumbing Systems]
[Sec. 3280.605 - Joints and connections.]
[From the U.S. Government Printing Office]
24HOUSING AND URBAN DEVELOPMENT52001-05-012001-05-01falseJoints and connections.3280.605Sec. 3280.605HOUSING AND URBAN DEVELOPMENTOFFICE OF ASSISTANT SECRETARY FOR HOUSING--FEDERAL HOUSINGMANUFACTURED HOME CONSTRUCTION AND SAFETY STANDARDSPlumbing Systems
Sec. 3280.605 Joints and connections.
(a) Tightness. Joints and connections in the plumbing system shall
be gastight and watertight for the pressures required under testing
(1) Assembling of pipe. All joints and connections shall be
correctly assembled for tightness. Pipe threads shall be fully engaged
with the threads of the fitting. Plastic pipe and copper tubing shall be
inserted to the full depth of the solder cup or welding sockets of each
fitting. Pipe threads and slip joints shall not be wrapped with string,
paper, putty, or similar fillers.
(2) Threaded joints. Threads for screw pipe and fittings shall
conform to the approved or listed standard. Pipe ends shall be reamed
out to size of bore. All burrs, chips, cutting oil and foreign matter
shall be removed. Pipe joint cement or thread lubricant shall be of
approved type and applied to male threads only.
(3) Solder joints. Solder joints for tubing shall be made with
approved or listed solder type fittings. Surfaces to be soldered shall
be cleaned bright. The joints shall be properly fluxed with noncorrosive
paste type flux and, for manufactured homes to be connected to a public
water system, made with solder having not more than 0.2 percent lead.
(4) Plastic pipe, fittings and joints. Plastic pipe and fittings
shall be joined by installation methods recommended by the manufacturer
or in accordance with the provisions of a recognized, approved, or
(5) Union joints. Metal unions in water piping shall have metal-to-
metal ground seats.
(6) Flared joints. Flared joints for soft-copper water tubing shall
be made with approved or listed fittings. The tubing shall be expanded
with a proper flaring tool.
(7) Cast iron soil pipe joints. Approved or listed cast iron pipe
may be joined as follows:
(i) Approved or listed hubless pipe as per the manufacturer's
(ii) Hub and plain-end soil pipe may be joined by compression
fittings per the manufacturer's recommendation.
[40 FR 58752, Dec. 18, 1975. Redesignated at 44 FR 20679, Apr. 6, 1979,
as amended at 53 FR 23611, June 23, 1988]