Simple Solution for
the 8" round pool main drain
ONLY works with 6" sumps,
limited to 117.8 gallons per minute
Can be used with single AND dual drains. No need to drain
pool or spa. No need to modify pool structure.
Simply remove your present 8" grate and install the adaptor
ring, attach the 24”cover with the stainless steel screws.
Certified by IAPMO R&T Lab August 1, 2008 to ASME
Manufactured with ABS plastic (service life rated for 7
years). Meets all requirements of the Graeme Baker Act,
ASME A112.19.8-2007, ASP-7 as a single unblockable suction
outlet without secondary backup devices, although this is
something that should be considered.
The cover has a maximum flow rates up to 117.8 GPM; not
to exceed 38,000 gallon pool with a 6 hour turnover. 12,000
gallons baby pool and 2000 gallon spa
please have the following information:
Dimension of inside of
Flow rate in gallons per
minute ( you can normally get this from the flow meter)
The Graeme Baker Act is a pool and safety act that mandates Federal
requirements for suction entrapment avoidance in all public and
semi-public pools and spas in the United States. The Act is calling for
the retrofit or re-certification of all main drains in pools and spas
by, December 20, 2008. The Unblockable Drain Cover Company has a
cost-effective and compliant solution to keep your pools and spas
Single PCV Adapter Ring for 6”
Can be used with single and dual drains
No need to drain pool or spa
No need to modify pool structure
Simply remove your present 8" grate and install the
adaptor ring. Attach the 24" cover with the stainless steel screws.
Certififed by IAPMO R & T Lab: August 1, 2008 tp ASME
A112.19.8-2007 THIS COVER IS A GOOD ONE- NOT subject to the recall.
Maufactureed with ABS plastic (service life rated for 7
Meets ALL the requirements of the Virginia Graeme Baker
Act, ASME A112.19.8-2007, ASP-7 as a single unblockable suction outlet
without secnodary backup devices, although that is something that could be
The cover has a maximum flwo rate up to 117.8 gpm, not
to exceed a 38,000 gallon pool with a 6 hour turnover. For baby pools,
not to exceed 12,000 gallons, and for spas not to exceed 2000 gallons.
Before ordering, please have the following information:
Dimension of inside of sump
Flow rate in gallons per minute ( you can normally get this from the flow
The Graeme Baker Act is a pool and
safety act that mandates Federal requirements for suction entrapment
avoidance in all public and semi-public pools and spas in the United States.
The Act is calling for the retrofit or re-certification of all main drains
in pools and spas by, December 20, 2008. The Unblockable Drain Cover
Company has a cost-effective and compliant solution to keep your pools and
spas running smoothly.
Adapter Ring for 6” Sump
WARNING:THIS COVER IS FOR
6” SUMPS ONLY AND CAN ONLY BE USED WITH ADAPTOR RING AND MUST
BE INSTALLED ACCORDING TO MANUFACTURER'S INSTRUCTIONS.
The "ABS round
drain cover " replacement suction outlet cover is intended as a
replacement for most existing 8"
round Main Drain Covers.
be accomplished underwater if desired since there is no chipping, patching,
or gluing required. Installation consists of the following:
Turn off the
Insert 3 bolts
into Adaptor Ring from the inside. Screw them in to the point when they
project beyond the outside of the Adaptor ring to the point where the bolt
heads clear each other.
Attach the 24"
cover tightly with the ridges down to the gray PVC adapter ring with the
three 1/4" stainless steel Phillips head screws provided.
Have a diver
(assuming pool/spa is full) remove the old main drain cover, screws and
Insert the PVC
Adaptor Ring fully into the Main Drain Sump with the underside half circle
cutout placed over the location where the Main Drain suction pipe enters
the Main Drain.
pressing the Adapter Ring into the Main Drain Sump to make the 24" grate
sit flat on the pool floor* tighten the three bolts evenly and tightly so
that the Adapter Ring is held firmly and permanently in the sump.
three phillips head screws that were attaching the 24" diameter grate to
the Adapter Ring.
plumber's pipe thread stick, smear/coat the bottom-side outer edge of the
cover plate measuring 1" wide and the matching area of the 24" diameter
grate so as to seal these two surfaces.
Place the cover
plate in the opening of the 24" diameter grate; reinsert the phillips head
screw through the 5" cover plate and the 24" grate firmly securing both to
the Adaptor Ring.
now complete. Turn on filter pump.
finished, the 24" grate should be held firmly against the pool/spa floor all
the way to the edge. If not, it may be necessary to loosen the three bolts
and more firmly push the Adaptor Ring in to the Main Drain Sump.
CAUTION: If at
any time the 24" grate should be broken, cracked or missing - close the
pool/spa immediately until corrected.
CAUTION: Do NOT block the hydrostatic relief valve, it must be able to
operate properly WITH the drain cover in place (which it can, if properly
installed). In a few pools, the hydrostatic relief valve may
need to be replaced with a lower profile one. Call us for
information if you think you might need this. 800-253-7235 begin_of_the_skype_highlighting800-253-7235end_of_the_skype_highlighting
INSTALLATION, SERVICE AND SAFETY
designation of this unit is "Submerged Suction Outlets".
This unit meets
the definition of "unblockable suction outlet" and as such does not
require multiple outlets or secondary devices, although this is something
that should be considered.
This product is
not designed to be located on seating areas or on the backrests for such
for two or more suction outlets: In accordance with the agreed upon
definition of an "unblockable suction outlet" (Suction outlet cover/grates
that cannot be completely covered (shadowed) by the 18in. x 23in. body
blocking element as referenced in ANSI/ASME A112.19.8 - 2007) no
specific additional requirements apply.
In the event
that the system flow rate is divided among two or more suction outlets, if
one suction outlet should be completely blocked, the remaining suction
outlets serving that system shall have a flow rate capable of the full
flow of the pump(s) for the specific suction system.
Head loss test
on the drain suction outlet cover indicated no discernable head loss
to its certified operational range or 117.8 gallons per minute. This is
probably due to its extremely low velocity (well under 1.5 feet per
second) through its openings, (see head loss curve enclosed).
connecting pipe size is between 1 1/2" and 3"
This product is
only to be mounted in conjunction with suction outlets on the floor
This ABS round
drain cover is not to be used with any field built sumps, it is only to
be used with the typical fabricated 8" main drain sumps unless the field
built sumps can be suitably modified.
7 years for the 24" cover and the 5" cover plate.
for installation: 1/2" box/open end wrench, #2 Phillips Screw Driver and
plumbers' pipe thread stick.
winterizing instructions: If at any time should the cover become loose,
remove the three screws holding the cover plate in place, remove the plate
and re-attach the 24" grate. Now loosen the three hexagonal bolts so that
the PVC adaptor ring may be moved. Firmly push the 24" cover down flat
with the pool floor and while holding the plate down re-tighten the
hexagonal bolts. Then place cover plate back on the 24" cover and
reinstall the three cover plate screws. After this check the drain to
make sure it has been reinstalled securely.
Do not exceed
117.8 gallons per minute through this suction fitting.
fitting including fasteners should be observed for damages or tampering
before each use of this facility
If at any time
becomes loose, it should be reattached or replaced before use of this
designed for flow rates up to 117.8gpm and caution should be
when replacing the pumping system, that this flow rate is not
Read then keep
these instructions for future reference
Sample pictures of
mounting ring is set inside a Hayward sump pump