OAR 333-062-0105
Piping


(1)

Spa pool recirculation piping shall be sized to carry the following maximum design flows:

(a)

Discharge piping (except copper) — 10 ft./sec. (3.05 m/sec.);

(b)

Discharge piping (copper) — 8 ft./sec. (2.44 m/sec.);

(c)

Suction velocity — 6 ft./sec. (1.83 m/sec.).

(2)

Pool recirculation piping, if plastic, shall comply with National Sanitation Foundation Standard Number 14 for Plastic Piping System Components and Related Materials.

(3)

Spa pool backwash and/or drain lines shall be permanently piped with an air break. For all spa pools built after May 1, 1986, the pool backwash and/or drain line shall be permanently piped with an air break to discharge into an approved sewerage system.
[Publications: Publications referenced are available from the agency.]
Last Updated

Jun. 8, 2021

Rule 333-062-0105’s source at or​.us