DEMA 167, 167T Installation Instructions Manual

DEMA PROPORTIONER

MODEL 167 & 167T

INSTALLATION INSTRUCTIONS

1. PARTS

A. Proportioner Assembly.
B. Supply tubing with foot valve & ceramic weight.

2. INSTALLATION

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.

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Screw proportioner directly onto standard external aerator threads. Remove inlet adapter for mounting on garden hose threads. For
other faucets see reverse side for adapter part numbers. For cities with plumbing codes requiring back siphonage protection, install
Dema part 34-22 between faucet and proportioner. See Fig. 1 for supply tubing attachment. Cut vinyl tubing to any convenient length,
slip on the ceramic weight, and push the open end over the detergent inlet barb. Soften end of tubing in hot water to facilitate
attachment. See Section 4 for adjustment screw setting guide. For filling buckets or mop rigs: a short len gth of ope n ended garden hose
may be attached to the proportioner outlet. Replace screen retainer part 100-8 with hose adapter part 100-10. Use one screen part 100-7
to insure priming.

3. OPERATION

Turn on water and push red button to draw in chemical. Push green button for clear water.

4. PROPORTIONER ADJUSTMENT
WARNING: USE CARE WHEN HANDLING HAZARDOUS CHEMICALS.

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

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

I-107 Pg. 1 of 5
Rev. B-40495 3/2/15

DEMA PROPORTIONER

MODEL 167 & 167T

INSTALLATION INSTRUCTIONS

Table 1, 167 Proportioner (Metering Screw)

Turns Counterclockwise from

Closed Position

1

2

2 

3

4

MODEL 167T:
The injection rate of the detergent or disinfectant into the water is controlled by screwing a color coded metering tip selected from Table
2 into the chemical inlet barb.

MODEL 167:
The injection rate of the detergent or disinfectant into the water can be adjusted by turning the recessed screw in the left side of the
proportioner. The injection rates for various settings and for products of different viscosities are as shown in Table 1.

Injection rate for viscosities shown

1 cps 75 cps 200 cps

Oz/Gal Oz/Gal Oz/Gal

0.40 ------ ------

3.25 1.75 0.90

5.75 2.50 1.00

8.25 2.75 1.05

12.85 3.00 1.10

Metering

Tip

Color

Tan

Orange

Turquoise

Pink

Clear

Brown

Red

White

Green

Blue

Yellow

Black

Purple

Gray

No Tip

Oz/Gal

0.25

0.35

0.50

0.63

0.75

1.00

1.25

1.50

1.75

2.00

3.20

4.00

6.40

10.00

12.00

1 cps

Ratio

512-1

366-1

256-1

205-1

171-1

128-1

102-1

85-1

73-1

64-1

40-1

32-1

20-1

12-1

10-1

Injection rates for viscosities shown

75 cps 200 cps

Oz/Gal Ratio Oz/Gal Ratio

0.17 756-1 0.15

0.25 512-1 0.20 640-1

0.33 384-1 0.25

0.45 284-1 0.33 384-1

0.66 213-1 0.45

0.70 183-1 0.50 256-1

0.80 160-1 0.60

1.00 128-1 0.70 183-1

1.15 111-1 0.75

1.35 95-1 0.85 150-1

1.85 69-1 0.95

2.20 58-1 1.00 128-1

2.50 51-1 1.05

2.75 47-1 1.07 120-1

3.20 40-1 1.10

853-1

512-1

284-1

213-1

171-1

135-1

122-1

116-1

I-107 Pg. 2 of 5
Rev. B-40495 3/2/15

DEMA PROPORTIONER

INSTALLATION INSTRUCTIONS

5. SERVICING

CAUTION: Turn off water supply before servicing.

A. Failure to inject chemical

a. Low water pressure. At least 10 psi is required.
b. Dirt or chemical on outlet screens. Clean.
c. Detergent passage blocked. Back off adjusting screw. Remove proportioner and soak in hot water to clean internal

passages.
d. Foot valve clogged. Soak in hot water.
e. Lime deposits in water passages. Remove proportioner and soak in a deliming solution.
f. Outlet hose (if used) obstructed or too long.

B. Injection in "clear" slide position.

a. Slide valve of vacuum breaking air vent clogged with grease or dirt. Remove proportioner and soak in hot water.
b. Chemical container above level of faucet. Place container on floor.

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

MODEL 167 & 167T

I-107 Pg. 3 of 5
Rev. B-40495 3/2/15

DEMA PROPORTIONER

MODEL 167 & 167T

INSTALLATION INSTRUCTIONS

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.

ADJUSTMENT SCREW MOD. 167

METERING TIP MOD. 167T

CHEMICAL

INLET BARB

CLEAR VINYL

SUPPLY TUBING

CERAMIC WEIGHT

FOOT VALVE

INLET ADAPTER

RED PUSH BUTTON

AIR VENT

OUTLET SCREEN RETAINER

FIGURE 1

FAUCET

I-107 Pg. 4 of 5
Rev. B-40495 3/2/15

DEMA PROPORTIONER

MODEL 167 & 167T

INSTALLATION INSTRUCTIONS

NO. PART NO. DESCRIPTION

1 100-3 Inlet Washer (2-Reqd.)
2 100-7 Priming Screens (1 To 3 Needed)
3 100-8 Screen Retainer
4 100-10 Adapter

100-24 Metering Screw

5
6 100-15 Metering Tip

150-6 Adapter Washer

7

100-12 7/32” ID x 3/8”OD x 8’ Lg.

8

61-107-2 Ceramic Weight (1/4” ID x 3/8”

9

10 100-16E

I-107 Pg. 5 of 5
Rev. B-40495 3/2/15

Supply Tubing

OD Tubing)
Foot Valve

ACCESSORIES

NO. PART NO. DESCRIPTION

11 150-23 Outside Chicago Thread Adapter
12 150-21 Inside Aerator Thread Adapter
13 150-32 Inside Kohler Thread Adapter
14 150-9-2 Irregular Faucet Adapter
15 34-22 Backflow Preventer