Specification VF-1-2-5 Rev.:4/11/2010

Chemical Injection Technologies
Product/Specification Bulletin
SUPERIOR VacuFeed™ Vacuum Liquid
Chemical Feed System (U.S. Patent No. 7,032,609)
GENERAL DESCRIPTIONThe SUPERIOR VacuFeed™ is a state-of-the-art Liquid
Chemical Feed System designed to allow constant,consistently repeatable metering of liquids into water or waste
water treatment systems, swimming pools, and manyindustrial processes. A highly efficient, water operated
venturi type ejector produces the vacuum necessary tooperate the system. A unique “Triple Bypass” check valvesystem prevents pressurized water from entering the liquid
metering system and provides a visual pressure relief todrain. All components operate under a safe, vacuum
condition which prevents chemicals from continuing to feed
into the atmosphere in the event of a breakage. A precision
liquid flow meter panel indicates the amount of liquid being
fed. Liquid flow rate is manually adjusted and the design
permits easy addition of an automatic flow rate
control valve. A spring opposed diaphragmvacuum regulator controls the liquid flow rate andalso acts as a safety shut-off valve which prevnts
any backflow of water or chemicals into thechemical storage tank. VacuFeed’s standard
models are designed to feed either Sodium
Hypochlorite (bleach) and Calcium Hypochlorite(granular chlorine) solutions, or Aqueous
Ammonia. Other chemicals may be compatible
with the standard materials of construction.

FEATURESThe SUPERIOR VacuFeed™ systemrepresents the most modern design
technology coupled with the very bestmaterials available to create an outstanding,user friendly piece of equipment. It is
designed with user safety as a primaryconcern.
1. VacuFeed is self priming and will not lose
prime, even with negative inlet headpressures.
2. Design eliminates any possibility of “airbinding” when gasses enter the system, or“out-gassing” occurs. This is particularly
important when feeding Sodium Hypochlorite(bleach).
3. VacuFeed maintains a consistent, highaccuracy liquid feed rate.
4. Feed rate is repeatable in start-stopoperations.
5.
There are no moving parts, whichtranslates into low maintenance, easy
service, low down time, and low operatingcost.
6. VacuFeed systems are easy to service andmaintain with no special tools required.
7. Safe. Will not continue to feed chemicals into theatmosphere in the event of a break or leak in tubing orother component.
8. “Triple Bypass” check valve system has a positive
pressure relief to drain, virtually eliminating any
possibility of backflow into the chemical storage tank.

Pub: Specification VF-1/2/5, Rev: 11042010

9. Extremely high mass transfer efficiency gives
excellent mixing of chemicals with water.
10. Chemical Feeding is constant, rather than in “slugs”
as with pumps.
11. Visual indication of feed rates and chemical flow at
all times.

FLOW METER CAPACITIESHigh precision variable area flow meters are available
with dual English/Metric scale maximum capacities of2.0, 5.0, 10.0, 25.0, and 50.0 gallons per hour, as well as
8.0, 20.0, 40.0, 100.0 and 200.0 liters per hour,
respectively. All flow metering tubes and rate
valves are interchangeable and may bechanged in the field without special tools.
“Turn down” capability on all flow meters is
20:1, allowing a wide range of chemical feedrates to be accomodated.

MODULAR DESIGNSUPERIOR VacuFeed™ Liquid Chemical Feed
System is designed to allow all of the major
components, vacuum regulator, flow meter
panel, check valves, and ejector to be
removed and serviced or maintained, withoutcompletely dismantling the entire system.

MATERIALS OF CONSTRUCTION

One of VacuFeed’s major competitive advantages
is the use of the finest, strongest and mostdurable materials available. Extensive use ofFluoroplastics and fiberglass reinforced thermoplastics allow VacuFeed to withstand attack bychemicals and to give the longest operational life.
Use of very high strength plastics reduces
possibility of cracking due to physical abuse orovertightening. All elastomers are specificallychosen to resist swelling and cracking in the liquidmedium being used.

SYSTEM OPERATION

Water under pressure flows through the ejector athigh velocity which causes a strong vacuum to becreated. This opens the check valves in the ejector
assembly as well as the secondary “triple bypass”,
and transmits a vacuum signal through the flow
meter tube/rate valve panel and back to thevacuum regulator. When the vacuum reaches a
pre-set level, the diaphragm in the regulator
moves to open the inlet safety valve, permitting
liquid to flow from the chemical storage tank. The
spring-opposed diaphragm and inlet valve
regulate the vacuum at this point.
Liquid chemical passes through the flow meter
panel and rate control valve to the ejector. The
chemical mixes with the ejector water and isdischarged through the diffuser into the water
being treated.

MODEL
VF-1
VF-2
VF-5

MAX. GPH
10.0
20.0
50.0

Copyright © 2004, Chemical Injection Technologies, Inc.

MAX. LPH
40.0
100.0
200.0

Printed in U.S.A.

SPECIFICATIONS

The liquid chemical feed system shall be SUPERIOR
VacuFeed™ MODEL ______ manufactured by Chemical
Injection Technologies, Inc., Ft. Pierce, Florida, and shallhave a maximum liquid flow rate of _______ gallons perhour (l/hr)of liquid chemical feed and shall be equippedwith a liquid flow meter of _______ gallons per hour(l/hr). The system shall be constructed of materials
designed to withstand the effects of _________________.
The liquid chemical feed system shall be of modular
design consisting of a vacuum regulator, flow meter/ratevalve panel, ejector/check valve assembly, secondary
check valve, and pressure relief/drain valve. Each ofthese assemblies shall be capable of being individually
removed for maintenance or service without removing
the entire liquid feed system.
The flow rate meter panel shall incorporate a flow rate
control valve made of fluoroplastic material which isinert to the corrosive effects of chemicals being fed.
Design shall provide for full closing of the rate valve
without engaging the control surfaces, to prevent
damage.
Vacuum shall be created by a fixed-throat venturi/ejector
system connected directly to the chemical solution
diffuser. A dual high-pressure/low-pressure check valve
system shall prevent water from entering the liquid feedsystem. The ejector assembly shall be capable ofwithstanding water pressure up to 300 PSIG (20.7 Bars).
The system shall incorporate a spring opposed
diaphragm vacuum regulator which shall maintain a preset vacuum upstream of the flow meter/rate control
valve panel. The vacuum regulator inlet valve shallclose tight upon loss of operating vacuum, and allow
start/stop operation without change in the liquid flowrate. Liquid chemical feed rate shall not be affected bychanges in chemical storage tank levels, by variationsin ejector supply water pressures, or by variations inejector backpressure.
Pub: Specification VF-1/2/5, Rev: 11042010

LIQUID COMPATIBILITY (Specify):
Sodium Hypochlorite
Calcium Hypochlorite
Aqueous Ammonia

Sodium Bisulfate
Other (Consult Factory)

STANDARD ACCESSORIES
25 ft. - 3/8" drain tubing
1 - Drain insect screen

OPTIONAL ACCESSORIES AVAILABLE
Inlet Water Assembly
Residual Analyzers
Booster pumps
Automatic Controls
Chlorine Comparators

Gas Masks
Gas DetectorsScalesGaugesOthers Available

OTHER SUPERIOR™ SYSTEMS AVAILABLEAUTOMATIC SWITCHOVER GAS CHLORINATORSMULTIPLE-POINT GAS CHLORINATORS
200 PPD (5 KG/HR)
500PPD (10 KG/HR)GAS SULFONATORS (DECHLORINATOR)AMMONIATORSAUTOVALVE AUTOMATIC FLOW PROPORTIONINGAUTOVALVE AUTOMATIC RESIDUAL CONTROLAUTOVALVE AUTOMATIC COMPOUND LOOP CONTROLWATERGUARD COLORIMETRIC H2O QUALITYANALYZERSWATERGUARD AMPEROMETRIC H2O QUALITYANALYZERS

Chemical Injection Technologies, Inc.
835 Edwards Rd., Ft. Pierce, FL, 34982, USA(772) 461-0666
Fax: (772) 460-1847
E-Mail: superior@chlorinators.com
www.chlorinators.com

Copyright © 2004, Chemical Injection Technologies, Inc.

Printed in U.S.A.