INSTALLATION INSTRUCTIONS
DEMA MODEL 163-2DF-2
DUAL FEED PROPORTIONER
Rev A 7/99
Form I-689
Page 1 of 2
1. PARTS
A.
Proportioner Assembly
B.
2 pcs. Supply tubing with foot valve & ceramic weight.
C.
Outlet tubing (3' Lg.)
D.
Metering tip kit
2. INSTALLATION AND ADJUSTMENT
Screw proportioner onto garden hose outlet or faucet. Select metering tips using Table 1 as a guide and screw into each inlet
barb. Attach the 3 foot length of tubing to the proportioner outlet. This tubing must remain attached or proportioner will not
draw. Slide ceramic weights over chemical inlet tubing to keep foot valves submerged in chemical, drop foot valve ends into
chemical containers. Attach open end of tubing to proportioner inlet barbs. (Tubing may be cut to any convenient length.
Soften end in hot water for easy attachment).
3. OPERATION
WARNING: USE CARE WHEN HANDLING HAZARDOUS CHEMICALS
Turn on water. Chemical siphoning will begin as soon as the outlet tubing fills with water.
Injection Rates For
Viscosities Shown
Metering Tip Color
1
cps
75 cps
200 cps
Oz/Gal
Ratio
Oz/Gal
Ratio
Oz/Gal
Ratio
Clear
0.30
430-1
0.22
592-1
0.13
864-1
Purple
0.48
265-1
0.32
406-1
0.24
524-1
Yellow
1.28
100-1
0.82
157-1
0.6
212-1
Green
1.67
77-1
1.29
99-1
1
128-1
Pink
2.36
54-1
1.65
77-1
1.25
103-1
Turquoise
3.76
34-1
2.55
50-1
1.85
69-1
Black
4.47
29-1
3.03
42-1
2.12
60-1
Gray
5.53
23-1
3.67
35-1
2.58
50-1
Red
7.00
18-1
4.79
27-1
2.79
46-1
Blue
8.78
15-1
5.39
24-1
3.06
42-1
Brown
10.95
12-1
6.49
20-1
3.35
38-1
White
14.19
9-1
7.08
18-1
3.46
37-1
Orange
17.58
7-1
7.91
16-1
3.71
35-1
Light Blue
21.75
6-1
8.66
15-1
3.9
33-1
Tan
27.98
5-1
9.15
14-1
4.11
31-1
No Tip
33.15
4-1
10.54
12-1
4.52
28-1
Table 1: 4 GPM flow rate, 3/8” barb and tubing
Note: 1 cps (centipoise) is equal to the viscosity of water, 75 cps is approximately equal to the viscosity of 10 weight motor
oil, and 200 cps is approximately equal to the viscosity of most dishwashing detergents
