New Jersey Administrative Code › Title 7 - ENVIRONMENTAL PROTECTION › Chapter 10 - SAFE DRINKING WATER ACT › Subchapter 10 - PHYSICAL CONNECTIONS AND CROSS CONNECTION CONTROL BY CONTAINMENT › Section 7:10-10.3 - Approved physical connection installation requirements

Current through Register Vol. 56, No. 14, July 15, 2024
(a) An approved
				physical connection installation shall be either a double check valve assembly
				or a reduced pressure zone backflow preventer assembly, as defined at
				7:10-1.3, designed and constructed
				in accordance with the requirements of this subchapter.
(b) The approved physical connection
				installation shall be a reduced pressure zone backflow preventer assembly when
				the unapproved water supply is a non-potable water source or a source in which
				contaminant levels measured pursuant to the State primary drinking water
				regulations at N.J.A.C. 7:10-5 exceed the maximum contaminant levels specified
				therein.
(c) The requirements of
				(b) above shall not apply to any physical connection installation operated
				under a current physical connection permit issued before November 18, 1996
				until such time as the existing physical connection is replaced or
				modified.
(d) Each backflow
				prevention device used in an approved physical connection installation shall be
				constructed as follows:
1. For devices up to
				and including two inches in diameter, the double check valve assembly or the
				reduced pressure zone backflow preventer assembly shall be of durable,
				non-toxic plastic, or of all stainless steel, all bronze, or all brass
				construction;
2. For devices larger
				than two inches in diameter, the double check valve assembly or the reduced
				pressure zone backflow preventer assembly shall be constructed as described in
				(d)1 above or shall be constructed of cast iron or steel, lined with brass,
				bronze, epoxy resin, stainless steel, or other durable nontoxic, non-corrodible
				material acceptable to the Department;
3. The clappers, discs or poppets, hinges,
				bushings, and seatings of the check valve assemblies in any device used for an
				approved physical connection installation shall be constructed of brass,
				bronze, stainless steel or non-toxic plastic, and shall be so designed and
				installed as to be readily replaceable;
4. Facing rings of the clappers, poppets or
				discs, or differential relief valves shall be composed of durable molded
				natural rubber, synthetic rubber or neoprene, shall be of even thickness,
				smoothfaced, water-absorption resistant and shall provide a positive seal
				against the backflow of water through the device;
5. Every double check valve assembly and
				reduced pressure zone backflow preventer assembly shall have test cocks
				installed to facilitate the pressure testing required pursuant to
				7:10-10.6;
6. Every backflow prevention device up to two
				inches in diameter shall be installed with full port ball type shutoff valves.
				For backflow prevention devices that are larger than two inches in diameter,
				shutoff valves of the ball valve type are recommended; and
6. Every backflow prevention device up to two
				inches in diameter shall be installed with full port ball type shutoff valves.
				For backflow prevention devices that are larger than two inches in diameter,
				shutoff valves of the ball valve type are recommended. Strainers installed
				upstream of the leading shutoff valve are recommended for all backflow
				prevention devices regardless of sizes; and
7. The pipe conveying water from the
				differential relief port of a reduced pressure zone backflow preventer assembly
				shall allow an air gap between the assembly and the drain pipe, and the pipe
				shall be of the same diameter as, or larger than, the relief
				port.