# Title 62 — Plumbing, Board of

## Article 62-04 — Water Conditioning Code

## Chapter 62-04-04 — Joints and Connections

### § 62-04-04-01. Tightness.

Joints and connections in the water conditioning system shall be watertight for the pressure
required by test.
General Authority: NDCC 43-18.1-03
Law Implemented: NDCC 43-18.1-04
### § 62-04-04-02. Types of joints for piping materials.

1. Threaded. Every threaded joint shall conform to the American National Taper Pipe Thread,
ANSI B2.1-1960. All burrs shall be removed. Pipe ends shall be reamed or filed out to size of
bore, and all chips shall be removed. Pipe joint compound shall be used only on male threads.
2. Soldered. Joints in copper tubing shall be made by the appropriate use of approved brass or
copper fittings. The surface to be joined by soldering shall be cleaned bright by manual or
mechanical means. The joints shall be properly fluxed with an approved noncorrosive
paste-type flux and made up with approved solder. For potable water used in copper, brass, or
wrought copper fittings must be made with a solder and flux containing not more than
two-tenths percent lead. Soldered joints may not be used for tube installed underground.
3. Flared. Every flared joint for annealed-temper copper water tube shall be made with fittings
meeting approved standards. The tube shall be reamed and then expanded with a proper
flaring tool.
4. Brazed. Brazed joints shall be made by first cleaning the surfaces to be joined down to the
base metal, applying flux approved for such joints and for the filler metal to be used, and
making the joint by heating to a temperature sufficient to melt the approved brazing filler metal
on contact.
5. Slip. Every slip joint shall be made using approved packing or gasket material, or approved
ground joint brass compression rings. Ground joint brass connections which allow adjustment
of tubing but provide a rigid joint when made up shall not be considered as slip joints.
6. Expansion. Every expansion joint shall be of approved type and its material shall conform
with the type of piping in which it is installed.
7. Split couplings. Couplings made in two or more parts and designed for use with plain end or
grooved pipe or approved fittings and with compression gaskets may be used for hot and cold
water piping and conductors and leaders. Each manufacturer must have the manufacturer's
complete joining assembly approved for the intended use by one of the organizations listed in
chapter 62-04-03 or by the administrative authority.
History: Amended effective October 1, 1989.
General Authority: NDCC 43-18.1-03
Law Implemented: NDCC 43-18.1-04

### § 62-04-04-03. Types of joints between different piping materials.

Every joint from copper tube to threaded pipe shall be made by the use of brass or copper
converter fittings. The joint between the copper pipe and the fitting shall be properly soldered, and the
connection between the threaded pipe and the fitting shall be made with a standard pipe size screw
joint.
General Authority: NDCC 43-18.1-03
Law Implemented: NDCC 43-18.1-04
### § 62-04-04-04. Unions.

Unions in the water supply system shall be metal-to-metal with ground seats.
General Authority: NDCC 43-18.1-03
Law Implemented: NDCC 43-18.1-04
