Wyoming Administrative Code
Agency 010 - Agriculture, Dept. of
Sub-Agency 0008 - Public Swimming Pools
Chapter 4 - SANITARY FACILITIES AND CONTROLS
Section 4-17 - Suction Outlets
Universal Citation: WY Code of Rules 4-17
Current through December 21, 2024
(a) Suction outlets for pools, spas and similar installations shall:
(i) Be designed to protect against
entrapment, hair entrapment or entanglement hazard;
(ii) Not constitute a hazard to the user;
and
(iii) Protect against
evisceration.
(b) Suction outlets other than skimmer throats shall:
(i) Be provided with anti-vortex covers, or
grates that have been tested by a nationally recognized testing laboratory and
comply with ASME/ANSI A.112.19.8M R96, Suction Fitting for Use in Swimming
Pools, Wading Pools, Spas, Hot Tubs, and Whirlpool Bathtub Appliances.
(A) The installation of the anti-vortex
covers or grates shall be according to manufacturer's specifications;
and
(B) A minimum of two (2)
hydraulically balanced suction outlets (suction fittings) with anti-vortex
covers or grates shall be provided per pool or spa pump suction line.
(I) Multiple sets of pump suctions shall be
permitted into two (2) or more suction outlets as long as they are
hydraulically balanced and meet the requirements of these
Regulations.
(II) The distance
between the suction fittings shall be three (3) to five (5) feet for suction
outlets less than twelve (12) inches by twelve (12) inches and/or one-hundred
forty-four (144) square inches.
(III) All suction outlets larger than twelve
(12) inches by twelve (12) inches and/or one-hundred forty-four (144) square
inches on any pool or spa shall have a minimum of two (2) hydraulically
balanced suction outlets (main drains) with a separation distance of three (3)
feet or more in the lowest point of the pool or spa floor.
(IV) The spacing of the suction outlets (main
drains) shall not be:
(1.) Greater than
twenty (20) feet on centers; or
(2.) More than fifteen (15) feet from each
side wall.
(V) No means
of isolating suction outlets is permitted which could allow one (1) suction
outlet to serve as the sole source of water to a pump.
(VI) A single pipe to sump suction outlet
that serves two (2) or more suction outlets may be valved to shut off the flow
to the pump.
(c) Water velocity through suction outlet grates shall not:
(i) Exceed one and one half
(11/2) feet per second.
(d) Water velocity through anti-vortex suction outlet covers shall not:
(i) Exceed
six (6) feet per second.
(A) Suction outlets
with velocities exceeding one and one half (11/2) feet per second are
permitted, provided each suction outlet has a cover that has been tested and
approved for such velocities by a nationally recognized testing laboratory and
complies with ASME/ANSI A.112.19.8M R96, Suction Fitting for Use in Swimming
Pools, Wading Pools, Spas, Hot Tubs, and Whirlpool Bathtub
Appliances.
(B) The maximum
velocity in the pump suction hydraulic system shall not exceed six (6) feet per
second when one-hundred (100) percent of the pump flow comes from the main
drain system.
(C) The flow through
the open area of the remaining suction grate outlet or outlets shall not exceed
one and one half (11/2) feet per second and shall meet ASME/ANSI
A.112.19.8M R96, Suction Fitting for Use in Swimming Pools, Wading Pools, Spas,
Hot Tubs, and Whirlpool Bathtub Appliances.
Disclaimer: These regulations may not be the most recent version. Wyoming may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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