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• Reduces solids and fouling problems in cooling water system piping and equipment
• Reduces labor costs associated with manual cleaning of tower basins, chillers, condensers and heat exchangers
• Improves performance and efficiency of heat transfer equipment
• Reduces energy costs• Reduces environmental
impact associated with (and minimizes discharge of ) solids and chemicals into sewer stream
• Contributes to controlling growth of bacteria
• Removes light organic material such as pollen
www.griswoldwatersystems.com
applications
• Chilled Water A/C Systems• Industrial Cooling Towers• Evaporative Condensers• Irrigation• Waste Water• Pre-Filtration
systems + components
sand filter benefits
Sump or Cooling Tower - Basin Sweeper System
A sweeper system using eductors can be used in conjunction with the Griswold Sand Filter Systems. Such sweepers systems are specifically engineered for each sump or basin and are designed to continuously circulate and direct the fluid stream toward the suction of the pump, preventing solids from settling to the bottom of the sump/basin. Model selection is based on the recirculation flow rate of the cooling tower and/or size of the cooling tower in tons.
sand filter + sand filter systemsGriswold Water Systems’ Sand Filters are designed as self contained units for your filtration needs. Models are compact, durable, and effective filtration packages.
Our sand filters come complete with their own pump, pipe manifolds, pressure gauges, basket strainer, a pump control panel and backwash controller.
how it works
technical details available on request
Fluid enters the upper body in a rotational direction, enabling the dirt/contaminants to continuously rotate with the water. This prevents the solids from blanketing the top of the media, keeping it fluidized at all times. Since many of the very light solids are kept in suspension in the top portion of the filter, the filtration cycle is longer, and the backwash cycle is shorter for more economical operation.
system filtration modecity filtration modeCLOSED DURINGFILTRATION.
CLEAN WATER OUTLET. OPEN DURING FILTRATION.
CLOSED DURING FILTRATION
INLET CONNECTIONINLET CONNECTION
CLOSED DURING FILTRATION
IN-LINE Y-STRAINER(74-100 MICRONS)
CLOSED DURINGFILTRATION.
CLEAN WATER OUTLET. OPENDURING FILTRATION.
system backwash modecity backwash mode
CLOSED DURINGBACKWASH.
DIRTY WATER OUTLET. OPEN DURING BACKWASH.
CITY WATER CONNECTION. OPEN DURING BACKWASH. WATER PRES-SURE MUST NOT EXCEED 40 P.S.I.
INLET CONNECTIONPUMP OFF DURING BACK-WASH MODE.
AUTOMATIC & MANUAL AIR VENT
CLOSED DURINGBACKWASH.
DIRTY WATER OUTLET. OPEN DURING BACKWASH.
IN-LINE Y-STRAINER(74-100 MICRONS)
SYSTEM INLET CON-NECTION
AUTOMATIC & MANUAL AIR VENT
GWS-1001-A 1/11
sand filter + sand filter systems
PROPOSALS & ENGINEERING 1597 industrial drive, new smyrna beach, fl 32168 | t: 386.663.3370 f: 386.663.3371 CUSTOMER SERVICE & MANUFACTURING 1525 east 6th street, corona, ca 92879 | t: 951.278.8992 f: 951.735.0798
GS-07F-0234X