D. WATER PRODUCTION RATE CHART
Estimated Water Production Rate
Feed Water
in Gallons Per Day (GPD) and Liters Per Day (lpd) for Line Pressure of:
40 psig
50 psig
60 psig
70 psig
80 psig
90 psig
100 psig
Temp
TDS
*
(280 kPa)
(340 kPa)
(410 kPa)
(480 kPa)
(550 kPa)
(620 kPa)
(690 kPa)
˚F
˚C
mg/l
gpd
lpd
gpd
lpd
gpd
lpd
gpd
lpd
gpd
lpd
gpd
lpd
gpd
lpd
40
4
50
4.6
17.4
6.1
23.1
7.5
28.4
8.9
33.7
10.3
39.0
11.8
44.7
13.2
50.0
500
4.0
15.1
5.4
20.4
6.8
25.7
8.3
31.4
9.7
36.7
11.1
42.0
12.5
47.3
1000
3.3
12.5
4.7
17.8
6.1
23.1
7.6
28.8
9.0
34.1
10.4
39.4
11.8
44.7
1500
2.6
9.8
4.0
15.1
5.4
20.4
6.8
25.7
8.3
31.4
9.7
36.7
11.1
42.0
50
10
50
7.0
26.5
9.2
34.8
11.4
43.1
13.5
51.1
15.9
60.2
17.9
67.8
20.0
75.7
500
6.1
23.1
8.2
31.0
10.4
39.4
12.6
47.7
14.7
55.6
16.9
64.0
19.1
72.3
1000
5.0
18.9
7.2
27.3
9.3
35.2
11.5
43.5
13.7
51.9
15.8
59.8
18.0
68.1
1500
3.9
14.8
6.1
23.1
8.2
31.0
10.4
39.4
12.6
47.7
14.7
55.6
16.9
64.0
60
16
50
9.4
35.6
12.4
46.9
15.3
57.9
18.2
68.9
21.1
79.9
24.0
90.8
26.9
101.8
500
8.1
30.7
11.0
41.6
14.0
53.0
16.9
64.0
19.8
75.0
22.7
85.9
25.6
96.9
1000
6.7
25.4
9.6
36.3
12.5
47.3
15.4
58.3
18.3
69.3
21.2
80.3
24.1
91.2
1500
5.2
19.7
8.1
30.7
11.0
41.6
14.0
52.6
16.9
64.0
19.8
75.0
22.7
85.9
70
21
50
11.9
45.0
15.5
58.7
19.2
72.7
22.8
86.3
26.4
99.9
30.1
113.9
33.7
127.6
500
10.2
38.6
13.9
52.6
17.5
66.2
21.2
80.2
24.8
93.9
28.5
107.9
32.1
121.5
1000
8.4
31.8
12.0
45.4
15.7
59.4
19.3
73.1
23.0
87.1
26.6
100.7
30.3
114.7
1500
6.6
25.0
10.2
38.6
13.9
52.6
17.5
66.2
21.2
80.2
24.8
93.9
28.5
107.9
80
27
50
14.3
54.1
18.7
70.8
23.0
87.1
27.4
103.7
31.8
120.4
36.2
137.0
40.6
153.7
500
12.3
46.6
16.7
63.2
21.1
79.9
25.5
96.5
29.8
112.8
34.2
129.4
38.6
146.1
1000
10.1
38.2
14.5
54.9
18.9
71.5
23.3
88.2
27.7
104.8
32.0
121.1
36.4
137.8
1500
7.9
29.9
12.3
46.6
16.7
63.2
21.1
79.9
25.5
96.5
29.8
112.8
34.2
129.4
90
32
50
16.7
63.2
21.8
82.5
26.9
101.8
32.1
121.5
37.2
140.8
42.3
160.1
47.4
151.4
500
14.4
54.5
19.5
73.8
24.6
93.1
29.8
112.8
34.9
132.1
40.0
151.4
45.1
161.2
1000
11.8
44.7
16.9
64.0
22.1
83.6
27.2
103.0
32.3
122.3
37.4
141.6
42.6
170.7
1500
9.2
34.8
14.4
54.5
19.5
73.8
24.6
93.1
29.8
112.8
34.9
132.1
40.0
179.4
*Total Dissolved Solids (TDS) measured in Parts Per Million (ppm)/Milligrams Per Liter (mg/l).
Please Note: This chart is based upon a start–up of a system when the storage tank is empty, (7
psig/48 kPa precharge). As the tank fills, and backpressure from the tank increases, the GPD rating
will decrease.
IMPORTANT! If the water production rate is within the highlighted area (marked with dotted
lines), change the drain restrictor to a 100 gpd (380 lpd) drain restrictor, color-coded black.
