US 5,287,567 AGranted

Hydraulic isolation manifold

AssigneeHorner Equipment of Florida, Inc.

InventorsWillard L. Eash, Paul F. Fulmer

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Abstract

A time shared arrangement for delivering spa water and pool water to a water heater is disclosed in which check valves respond to the presence of spa water and pool water pressure. Water drawn from the pool is diverted into two streams, one passes through a check valve to a water heater and the other passes through a check valve to a return line. The flow of pool water to the heater is isolated by a further check valve forced to a close position by the pressure of the pool water. Water drawn from the spa is diverted into two streams, one passes through a check valve to a water heater and the other passes through a check valve to a return line. The flow of spa water to the heater is isolated by a check valve forced is closed by the pressure of spa water. Separate check valves are used for the diverted flows of each water stream to reduce pressure loss and provide a uniquely located site where a signal can be derived indicated by operation of the spa water pump or in the absence thereof a control parameter indicative of operation of the pool water pump.

Claims10

Dependent claims

A water flow control system for a swimming pool and a spa, said system including:

a water heater having a first flow rate for water between a water inlet and a water outlet;
first means including a pump for supplying water from said swimming pool at a second flow rate which is at least equal to said first flow rate;
second means including a pump for supplying water from said spa at a third flow rate which is greater than said first flow rate;
a flow control header having a water supply duct communicating with the water inlet of said water heater between spaced apart water inlet ducts communicating with said first and second means;
first valve means responsive to a water pressure difference between said first flow rate and said second flow rate for causing a partial flow of pool water to said water heater and a diverted flow of pool water to a first return line which communicates between the header and the pool;
and
second valve means responsive to a water pressure difference between said first flow rate and said third flow rate for causing a partial flow of spa water to said water heater and a diverted flow of spa water to a second return line which communicates between the header and the spa.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/030,564Filed 12 Mar 1993
Granted: 22 Feb 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

E04H 4/1209
Devices or arrangements for circulating water , i.e. devices for removal of polluted water, cleaning baths or for water treatment: treatment of…
A61H 33/60
Bathing devices for special therapeutic or hygienic purposes: components specifically designed for the therapeutic baths of groups A61H33/00
A61H 33/0087
Bathing devices for special therapeutic or hygienic purposes: therapeutic baths with agitated or circulated water
E04H
Buildings or like structures for particular purposes