Illinois Administrative Code › Title 77 - PUBLIC HEALTH › Part 890 - ILLINOIS PLUMBING CODE › Subpart C - JOINTS AND CONNECTIONS › Section 890.320 - Types of Joints

Current through Register Vol. 48, No. 28, July 12, 2024
a) Caulked
				joints. Caulked joints for (drain, waste and vent systems only) cast iron
				hub-and-spigot pipe shall be firmly packed with oakum or hemp and filled with
				molten lead at least 1 inch deep and be firmly caulked not to extend more than
				1/8 inch below the rim of the hub. Paint, varnish, or other coatings shall not
				be permitted on the jointing material until after a plumbing inspector has been
				given the opportunity to test and approve or disapprove the joint. (See
				Appendix C.Illustration A.)
b)
				Threaded/Screwed Joints. Threaded joints shall conform to American National
				Taper Pipe Thread, ASME B.1.20.1
				(General Purpose). All burrs shall be removed; pipe ends shall be reamed or
				filed to size of the bore, and all chips shall be removed. Pipe joints compound
				shall be insoluble in water and non-toxic.
c) Wiped Joints. Joints in lead pipe or
				fittings, or between lead pipe fittings and brass or copper pipe ferrules,
				solder nipples, or traps shall be full-wiped joints. Wiped joints shall have
				exposed surface on each side of the joint at least ¾ inch and at least
				as thick as the material being joined. Wall or floor flange lead-wiped joints
				shall be made by using a lead ring or flange placed behind the joints at the
				wall or floor. Joints between lead pipe and cast iron, steel or wrought iron
				shall be made by means of a caulking ferrule, soldering nipple or
				bushing.
d) Soldered Joints. The
				surface to be soldered shall be cleaned bright. The joints shall be properly
				fluxed (lead free) and made with approved lead free solder conforming to ASTM
				Standard B32. Joints in copper water tubing shall be made with approved cast
				bronze or wrought copper pressure fittings, properly soldered together. All
				solders or flux containing more than 0.2 percent lead shall bear a warning
				label that states that the solder or flux is not approved for private or
				potable water use as required by Section 4 of the federal Hazardous Substances
				Act (
				15 USC 1263 ).
				Use of this product in making joints or fittings in any private or public
				potable water system is prohibited. No part of a drain, waste and vent (DWV)
				system shall be joined or fitted with a solder or flux containing more than 0.2
				percent lead.
e) Flared Joints.
				Flared joints for plastic pipe and tubing and soft copper water tubing shall be
				made with approved fittings. The tubing shall be expanded with a proper flaring
				tool. (See Appendix C.Illustration B.)
f) Hot-Poured Joints. Hot-poured compound for
				clay or concrete sewer pipe shall not be water absorbent and when poured
				against a dry surface shall have a bond of at least 100 pounds per square inch
				(psi). All surfaces of the joint shall be cleaned and dried before pouring. If
				wet surfaces are unavoidable, a primer such as oil or tar shall be applied. The
				compound shall not soften sufficiently to destroy effectiveness of the joint
				when subjected to a temperature of 160 degrees Fahrenheit, and not be soluble
				in any of the waste carried by the drainage system. Approximately 25 percent of
				the joint space at the base of the socket shall be filled with jute or hemp. A
				pouring collar rope or other device shall be used to hold the hot compound
				during pouring. Each joint shall be poured in one operation until the joint is
				filled. Joints shall not be tested until one hour after pouring.
g) Precast Joints. Precast collars shall be
				formed in both the spigot and bell of the pipe in advance of use. Prior to
				making joint contact, surfaces shall be cleaned. When the spigot end is
				inserted in the collar, it shall bind before contacting the base of the
				socket.
h) Brazed Joints. Brazed
				joints shall be made by first cleaning the surface to be joined down to the
				base metal, applying flux approved for brazed joints and for the filler metal
				to be used, and making the joints by heating to a temperature sufficient to
				melt the approved brazing filler metal on contact. (See Section
				890.330(b).)
				An extracted mechanical joint may be made in copper tube types K or L only for
				water distribution. The joint shall be made with a mechanical extraction tool
				and joined by brazing. To prevent the branch tube from being inserted beyond
				the depth of the extracted joint, depth stops shall be provided. This joint
				shall be for above-ground use only.
i) Cement Mortar Joints. Except for repairs,
				cement mortar joints are prohibited.
j) Burned Lead (Welded). (For DWV system
				only) Every burned (welded) joint shall be made so that the two or more
				sections to be joined shall be uniformly fused together into one continuous
				piece. The weld shall be at least as thick as the lead being joined.
k) Bituminized Fiber Pipe Joints. Joints in
				bituminized fiber pipe shall be made with tapered type couplings of the same
				composition as the pipe. Joints between bituminized fiber pipe and metal pipe
				shall be made by means of an adaptor coupling caulked as required in subsection
				(a).
l) Plastic Pipe Joints
1) Every joint in plastic piping shall be
				made with approved fittings by either solvent-welded or fusion-welded
				connections, compression fittings, approved insert fittings, metal clamps and
				screws of corrosion-resistant material, or threaded joints. (See Appendix
				A.Table A for approved pipe, fittings and solvent.)
2) Joints and Fittings in Plastic Pipe.
				Potable water piping fittings and joints shall be in accordance with the
				manufacturer's recommendations subject to the following: (See Appendix A.Table
				A, "Approved Standards for Fittings".)
A)
				Polyethylene (PE) pipe shall be installed only with compression fittings,
				insert and clamp type fittings or thermal-welded joints and fittings. All
				clamps shall be of corrosion-resistant material. The inside diameter (ID) of
				any insert fitting shall not be less than the minimum allowable size for water
				service/distribution piping. (See Appendix A.Tables D, N and O, for minimum
				allowable sizes for water service/distribution piping.)
B) Polyvinyl chloride (PVC) pipe shall be
				installed with solvent-welded or flanged joints only. The pipe shall not be
				threaded. Transition to metallic or other piping shall be made with the use of
				adaptor fittings. The fittings shall be molded from PVC. The primer and solvent
				cement used shall be in accordance with the manufacturer's recommendation for
				PVC piping.
C) Polybutylene (PB)
				pipe shall be installed only with insert and clamp type fittings, compression
				type, flanged type, or thermal-welded joints and fittings. All clamps shall be
				of corrosion-resistant material. The ID of any insert fitting shall not be less
				than the minimum allowable size for water service/distribution piping. (See
				Appendix A.Tables D, N and O, for minimum allowable sizes for water
				service/distribution piping.)
3) Joints in Plastic Drainage. Joints in
				plastic drainage piping or vent piping within a building shall be solvent
				welded. Threaded or flanged joints may be used with adaptor fittings. The
				solvent cement shall be specific for the type of piping material listed in
				Appendix A.Table A. O-ring expansion joints are acceptable if
				accessible.