DEMA 633AG-4 Installation Instructions Manual

DEMA 633AG-1 & 633AG-4 BLEND CENTER

This product is designed only to be used as described in this instruction sheet. Adhere to all warnings and
cautions identified in this document.

WARNING: Installations must conform to all local and national plumbing codes and use
approved backflow prevention and pressure relief devices where required.

ALWAYS DISCONNECT DISPENSER FROM WATER SOURCE WHEN DISPENSER
IS NOT IN USE.

Always read SDS for all chemicals used and follow personal protective guidelines.

INSTALLATION INSTRUCTIONS

1. PARTS:

A. Blend Center assembly B. 1 pc. ¼" I.D. or 3/8" I.D. x 8 ft. long supply tubing, foot valve & ceramic weight
C. 1 pc. 9/16" I.D. x 6 ft. long vinyl outlet tubing D. 2 pcs. #8 pan head 1-1/2" long mounting screws & anchors
E. 1 pc. label card F. Metering tip kit

2. INSTALLATION:

Note: Pressure indicating tee is to be install with existing faucets according to local plumbing codes in the state of
Wisconsin and any other state that requires the use of a pressure indicating tee.

A. Mounting & Water Supply:

Remove the two cover retainer screws and the cover from the blend center assembly. Any number of blend centers can be
coupled together by first removing the pipe plugs in all but the last unit, then connecting the male hose thread of one unit to
the female inlet hose adapter of the next unit. Mount the unit(s) in position on the wall and locate the position for the
mounting screws. Only two screws are necessary to mount up to four units coupled together. Mount the units(s) to the wall
and replace the covers and screws. The water inlet is equipped with a female garden hose fitting (with strainer washer) for
attaching a water supply hose. The unit is designed so water can be supplied to either side by interchanging the pipe plug
and the female hose fitting. Note: Apply pipe dope, hand tighten, and then turn 10 times with a wrench. DO NOT OVER
TIGHTEN.

B. Pressure Indicating Tee Installation:

Screw female quick disconnect to faucet and attach pressure indicating tee to female quick disconnect. Attach female end
of reinforced hose to male threads of tee, then attach the male end to the female garden hose fitting at the water inlet of the
Blend Center (See Figure 3). Water supply should not exceed 125 psi and water temperature must not exceed 160°F.

C. Chemical Supply:

Place the chemical containers in a convenient location not more than 6 feet below the blend center (greater lifts will reduce
injection capacities). Insert the ends with the foot valves of the 8 foot 1/4" I.D. or 3/8" I.D. vinyl tubing into the chemical
containers. Cut the vinyl tubing to any convenient length that will allow them to extend from the bottom of the chemical
container to the proportioner inlet barbs. (See Figure 1) Gummed labels are provided for labeling chemicals.

D. Outlet:

Cut the 9/16" I.D. outlet tubing to the desired length and attach it to the proportioner outlets. Longer lengths may be used
up to 10 feet. The 7" long, 3/16" tubing must be left on the 633-164AG model to insure priming.

E. Chemical Injection Adjustment: WARNING: USE CARE WHEN HANDLING HAZARDOUS CHEMICALS.

Chemical feed rates are controlled by metering tips screwed into the proportioner barbs. Select a tip for each barb using the
tables.

I-459 Pg. 1 of 6
Rev. F-42084 9/8/16

DEMA 633AG-1 & 633AG-4 BLEND CENTER

Metering Tip

Color

Injection Rates For Viscosities Shown

1 cps

75 cps

200 cps

Oz/Gal

Ratio

Oz/Gal

Ratio

Oz/Gal

Ratio

Tan

1.25

102-1

0.90

142-1

0.60

213-1

Orange

1.70

75-1

1.20

107-1

0.80

160-1

Turquoise

2.15

60-1

1.55

83-1

1.10

116-1

Pink

3.00

43-1

2.00

64-1

1.50

85-1

Light Blue*

3.90

33-1

2.75

47-1

1.80

71-1

Brown

4.55

28-1

3.00

43-1

2.00

64-1

Red

5.80

22-1

3.60

36-1

2.30

56-1

White

7.00

18-1

4.45

29-1

2.70

47-1

Green

7.90

16-1

5.00

26-1

3.00

43-1

Blue

9.80

13-1

5.75

22-1

3.30

39-1

Yellow

14.80

9-1

7.35

17-1

3.55

36-1

Black

20.15

6-1

8.50

15-1

3.70

35-1

Purple

27.80

5-1

9.80

13-1

3.80

34-1

Gray

31.60

4-1

10.50

12-1

3.90

33-1

No Tip

35.70

3.6-1

11.80

11-1

4.50

28-1

Metering Tip

Color

Injection Rates For Viscosities Shown

1 cps

75 cps

200 cps

Oz/Gal

Ratio

Oz/Gal

Ratio

Oz/Gal

Ratio

Clear

1.40

91-1

1.00

128-1

0.85

151-1

Purple

2.15

60-1

1.75

73-1

1.40

91-1

Yellow

4.00

32-1

3.25

39-1

2.80

46-1

Green

6.70

19-1

5.40

24-1

4.50

28-1

Pink

8.70

15-1

7.00

18-1

5.60

23-1

Turquoise

14.15

9-1

11.15

11-1

8.15

16-1

Black

17.25

7-1

13.50

9-1

10.00

13-1

Gray

22.60

6-1

16.75

8-1

11.60

11-1

Red

25.15

5-1

19.50

7-1

13.50

10-1

Blue

27.50

4.7-1

21.65

6-1

14.25

9-1

Brown

31.00

4-1

24.25

5-1

15.60

8-1

White

33.50

3.8-1

26.25

4.9-1

16.70

7.7-1

Orange

35.40

3.6-1

28.00

4.6-1

17.40

7.4-1

Lt. Blue*

36.50

3.5-1

29.00

4.4-1

18.20

7-1

Tan*

37.80

3.4-1

29.90

4.3-1

18.65

6.9-1

No Tip

38.30

3.3-1

30.90

4.1-1

21.30

6-1

INSTALLATION INSTRUCTIONS

TABLE 1 - 164BAG (1 GPM FLOW RATE PROPORTIONER - 1/4" BARB AND TUBING)

*Metering tip color was formerly clear. Note: All induction rates are base on a water pressure of 40 psi.

Leaner dilutions can be achieved by ordering DEMA ultra lean tip kit 100-15KU.

TABLE 2 - 164AG (1 GPM FLOW RATE PROPORTIONER - 3/8" BARB AND TUBING)

Note: All induction rates are base on a water pressure of 40 psi. *These tips are not included in standard tip kit

I-459 Pg. 2 of 6

Rev. F-42084 9/8/16

DEMA 633AG-1 & 633AG-4 BLEND CENTER

Metering Tip

Color

Injection Rates For Viscosities Shown

1 cps

75 cps

200 cps

Oz/Gal

Ratio

Oz/Gal

Ratio

Oz/Gal

Ratio

Tan

0.30

427-1

0.20

640-1

0.15

853-1

Orange

0.40

320-1

0.30

427-1

0.25

512-1

Turquoise

0.60

213-1

0.40

320-1

0.30

427-1

Pink

0.80

160-1

0.50

256-1

0.40

320-1

Light Blue*

1.00

128-1

0.70

183-1

0.45

284-1

Brown

1.20

107-1

0.80

160-1

0.50

256-1

Red

1.50

85-1

0.90

142-1

0.60

213-1

White

1.85

69-1

1.10

116-1

0.70

183-1

Green

2.00

64-1

1.25

102-1

0.80

160-1

Blue

2.50

51-1

1.50

85-1

0.82

156-1

Yellow

4.00

32-1

1.85

69-1

0.90

142-1

Black

5.50

23-1

2.00

64-1

0.94

136-1

Purple

8.80

15-1

2.40

53-1

0.96

133-1

Gray

11.65

11-1

2.50

51-1

1.00

128-1

No Tip

16.20

8-1

3.00

43-1

1.20

107-1

Metering

Tip Color

Injection Rates For Viscosities Shown

1 cps

75 cps

200 cps

Oz/Gal

Ratio

Oz/Gal

Ratio

Oz/Gal

Ratio

Clear

0.90

142-1

0.30

427-1

0.20

640-1

Purple

1.10

116-1

0.50

256-1

0.40

320-1

Yellow

1.80

71-1

1.00

128-1

0.70

183-1

Green

2.50

51-1

1.50

85-1

1.20

107-1

Pink

3.00

43-1

2.00

64-1

1.50

85-1

Turquoise

4.50

28-1

3.15

41-1

2.30

56-1

Black

4.80

27-1

3.75

34-1

2.80

46-1

Gray

6.70

19-1

4.80

27-1

3.35

38-1

Red

8.15

16-1

5.80

22-1

3.80

34-1

Blue

9.20

14-1

6.60

19-1

4.20

30-1

Brown

11.10

12-1

7.75

17-1

4.70

27-1

White

13.20

10-1

9.15

14-1

5.00

26-1

Orange

15.00

9-1

10.10

13-1

5.30

24-1

Lt. Blue*

16.70

8-1

11.10

12-1

5.50

23-1

Tan*

18.50

7-1

11.80

11-1

5.80

22-1

No Tip

19.40

6.6-1

13.00

10-1

6.20

21-1

INSTALLATION INSTRUCTIONS

E 3 - 163BAG (4 GPM FLOW RATE PROPORTIONER - 1/4" BARB AND TUBING)

*Metering tip color was formerly clear. Note: All induction rates are base on a water pressure of 40 psi.

Leaner dilutions can be achieved by ordering DEMA ultra lean tip kit 100-15KU.

TABLE 4 - 163AG (4 GPM FLOW RATE PROPORTIONER - 3/8" BARB AND TUBING)

Note: All induction rates are base on a water pressure of 40 psi. *These tips are not included in standard tip kit.

3. OPERATION:

The blend center is now ready for use. Depressing a push button opens the valve, allowing water to flow through the
chemical proportioner that mixes chemical at the desired rate. The buttons are spring loaded to prevent accidental overflow
if unattended, but may be converted to locking buttons by cutting off the tab, at the notch. (See Figure 2) Pushing the
button and turning it a 1/4 turn clockwise at the end of its travel allows the valve to lock on. This makes it unnecessary for
the attendant to hold the button in while filling large containers. Turning the button in a counter clockwise direction will
release it, allowing the valve to shut off.

I-459 Pg. 3 of 6

Rev. F-42084 9/8/16

DEMA 633AG-1 & 633AG-4 BLEND CENTER

INSTALLATION INSTRUCTIONS

4. SERVICING:

CAUTION: TURN OFF WATER SUPPLY BEFORE SERVICING.

A. Proportioner fails to draw chemical:

1. Pinch outlet tube to create back pressure which will cause unit to prime. The foot valve will keep the inlet tube
primed thereafter.

2. Insufficient water supply pressure. 20 PSI is the minimum allowable.

B. Proportioner stops drawing chemical:

1. Inspect foot valve for dried chemical or dirt. Soak in hot water to clean.

2. Proportioner metering tip clogged with dried chemical. Remove tip and try injecting in hot water. If there is
no suction, remove proportioner and soak in hot water to clear interior passages.

C. Proportioner continues to draw chemical after water valve closes:

Chemical supply is higher than bottom of discharge tube creating a natural siphon. Lower the supply vessel or hang
up outlet tube after use.

D. Valve Malfunction:

Check that the button moves freely up & down and that a "click" can be heard when the button is pushed and
released, indicating that the magnet is activating the plunger properly. Remove cover. to inspect internal parts,
unscrew magnet housing and carefully pull off the enclosing tube so as not to drop the plunger, kick-off spring and
spacer. Check for dirt or damage impending plunger and kick-off spring movement. Inspect the diaphragm, making
sure the two small pin holes (bleed holes) in the diaphragm convolution are clear to allow the valve to close.

CAUTION: When servicing unit, be sure that replacement parts have been installed according to drawing.

RETURNS: NO MERCHANDISE MAY BE RETURNED FOR CREDIT WITHOUT DEMA’S WRITTEN

PERMISSION. RETURN MERCHANDISE AUTHORIZATION NUMBER REQUIRED IN
ADVANCE OF RETURN.

WARRANTY: DEMA products are warranted against defective material and workmanship under normal use and

service for one year from the date of manufacture. This limited warranty does not apply to any
products which have a normal life shorter than one year or failure and damage caused by chemicals,
corrosion, improper voltage supply, physical abuse, or misapplication. Rubber and synthetic rubber
parts such as “o”- rings, diaphragms, squeeze tubing and gaskets are considered expendable and are
not covered under warranty. This warranty is extended only to the original buyer of DEMA products.
If products are altered or repaired without prior approval of DEMA, this warranty will be void.

Defective units or parts should be returned to the factory with transportation prepaid. If inspection

shows them to be defective, they will be repaired or replaced without charge, F.O.B. factory. DEMA
assumes no liability for damages. Return merchandise authorization number, to return units for repair
or replacement, must be granted in advance of return.

I-459 Pg. 4 of 6
Rev. F-42084 9/8/16

DEMA 633AG-1 & 633AG-4 BLEND CENTER

FIGURE 3

OUTLET TUBING

BLEND CENTER

CHEMICAL
INLET TUBING

WATER INLET HOSE

PRESSURE

INDICATING

TEE

DETAIL OF PRESSURE

INDICATING TEE

WATER INLET HOSE

PRESSURE INDICATING TEE INSTALLATION

UTILITY KNIFE

FIGURE 2

VINYL DISCHARGE TUBING

PUSH BUTTON

FIGURE 1

FOOT VALVE

CHEMICAL CONTAINER

CERAMIC

WEIGHT

INLET HOSE ADAPTOR

STRAINER WASHER

METERING TIP

MOUNTING HOLES

AIR GAP PROPORTIONER

(MODEL 633-164AG ONLY)

7" LG TUBING

PIPE PLUG

PUSH BUTTON ACTUATOR

SUPPLY TUBING TO CHEMICAL

INSTALLATION INSTRUCTIONS

I-459 Pg. 5 of 6
Rev. F-42084 9/8/16

DEMA 633AG-1 & 633AG-4 BLEND CENTER

NO.

PART NO.

DESCRIPTION

1

66-139

Magnet Housing (Specify Color)

2

66-140

Push Button (Specify Color)

3

63-35

Magnet

4

63-36

Spring 5 41-7-25

Enclosing Tube

6

63-87

Valve Repair Kit

7

63-37

Spacer 8 41-1-8

Kick-Off Spring

9

63-38

Plunger

10

41-15-10

Diaphragm

11

63-39

Valve Body

12

100-38

Strainer Washer

13

93-44

Pipe To Garden Hose Adapter

14

66-153

Pipe Plug & O-Ring Assy.

15

61-22-3AG

4 GPM(3/8” Barb) Proportioner

61-22-3BAG

4 GPM(1/4” Barb) Proportioner

61-32AG

1 GPM(3/8” Barb) Proportioner

61-32BAG

1 GPM(1/4” Barb) Proportioner

16

100-59

Strainer Washer

17

63-73

Nozzle (4 GPM)

18

63-74-2

Nozzle (1 GPM)

19

63-76

Screen (4 GPM)

20

63-77

Screen (1 GPM)

21

63-78

O-Ring

22

63-79

Inlet Barb (1/4” Barb)

23

63-80

Inlet Barb (3/8” Barb)

NO.

PART NO.

DESCRIPTION

24

61-9

Metering Tip

25

100-15

Metering Tip

26

100-12

Vinyl Tube (7/32” ID X 8 ft. Lg.)

27

100-12L

Vinyl Tube (3/8” ID X 8 ft. Lg.)

28

63-82

Vinyl Tube (3/16” ID X 7” Lg.)

29

63-88

Vinyl Tube (9/16” ID X 4” Lg.)

(1 GPM Only)

30

63-83

Vinyl Tube (3/16” ID X 6 Ft. Lg.)

31

61-107-2

Ceramic Weight (For 3/8” OD

Tubing)

32

61-107

Ceramic Weight (For ½” OD

Tubing)

33

100-11P

Foot Valve

34

63-45

Cover

35

63-46

Screw

ACCESSORIES

NO.

PART NO.

DESCRIPTION

36

68-6-QD2

Pressure Indicating Tee

37

61-25-2

Fresh Water Outlet Kit

38

100-15K

Metering Tip Kit (14 Sizes)

39

61-9K

Metering Tip Kit (15 Sizes)

40*

L307

Chemical labels

41*

L366

Unit front Label

(1 GPM ONLY)

11

(1 GPM ONLY)

(6' LONG)

29

30

(3/8" TUBE)

27

FOR 1/4" TUBE
FOR 3/8" TUBE

32

31

(4 GPM)
(1 GPM)

16

15

*SEE TABLE BELOW

28

(1 GPM)

(4 GPM)

17

18

20

19

14

(1/4" BARB)

(3/8" BARB)

(1/4" BARB)

(1/4" TUBE)

(3/8" BARB)

23

33

26

25

24

22

63-78

21

6

9

10

8

7

5

3

4

13

12

34

(SPECIFY COLOR)

(SPECIFY COLOR)

35

2

1

36

INSTALLATION INSTRUCTIONS

I-459 Pg. 6 of 6
Rev. F-42084 9/8/16

*Items 40 and 41 are not shown