Page 40 - DIG 2018 Catalog

Heavy Duty – Low-to-Medium-Flow Preset Pressure Regulators
Features
• Available with 3/4′′ FPT or FHT inlet
• Exceptional control of outlet pressure
• Withstands severe water hammer
• Utilizes a minimum of moving
parts and a diaphragm design that regulates itself in reaction to overall system back pressure.
• Engineered with extra thick industrial-strength ABS plastic with all joints sonic welded into a tamper proof, impact-resistant housing
• Install above or below grade and in downstream pressure
Specifications
• FNPT pressure range: 20, 25, 30, 35 & 40 PSI
• FHT pressure range: 25 PSI
• Operating pressure up to 120 PSI
• Flow rate from .5 to 12 GPM
• Max. recommended ow rate: 12 GPM • Overall length 4.025′′
• Outside diameter 1.845′′
• Inlet 3/4′′ FIPT (standard) or FHT
• Outlet 3/4′′ FIPT or 3/4′′ MNPT or MHT • Materials:
• Body: chemical resistant ABS plastic • Diaphragm: EPDM
• Spring: stainless steel
Model
Description
18-020
20 PSI • 3/4′′ FNPT x 3/4′′ MNPT
30 PSI • 3/4′′ FNPT 35 PSI • 3/4′′ FNPT 40 PSI • 3/4′′ FNPT
Flow rate vs. pressure
18-325
Flow
Input pressure (PSI)
(GPM)
40
50
60
80
0.5
23.5
23.7
24.0
24.4
1.0
23.3
23.5
23.6
23.7
3.0
23.7
23.7
23.7
23.7
6.0
23.5
23.5
23.5
23.5
9.0
21.9
23.5
23.6
23.7
12.0
19.7
21.3
24.0
24.5
Flow rate vs. pressure
18-025
Flow
Input pressure (PSI)
(GPM)
30
40
50
60
0.5
24.7
25.9
26.0
26.1
1.0
24.3
24.4
24.6
25.5
3.0
24.2
24.2
24.1
24.1
6.0
23.9
24.0
23.9
23.8
9.0
22.8
24.4
24.3
24.1
12.0
21.8
24.4
24.8
24.7
Flow rate vs. pressure
18-020
Flow
Input pressure (PSI)
(GPM)
40
50
60
80
0.5
20.0
20.0
20.0
20.0
1.0
19.8
19.8
19.8
19.8
3.0
19.8
19.8
19.8
19.8
6.0
19.7
19.7
19.6
19.6
9.0
19.3
20.0
20.0
20.0
12.0
17.7
19.2
20.0
20.0
Flow rate vs. pressure
18-335
Flow
Input pressure (PSI)
(GPM)
40
50
60
80
0.5
35.0
35.0
35.0
35.2
1.0
34.4
34.6
34.6
34.8
3.0
34.0
34.6
34.6
34.6
6.0
30.3
34.2
34.3
34.3
9.0
28.9
32.0
34.0
34.3
12.0
22.9
29.0
32.0
35.5
Flow rate vs. pressure
18-340
Flow
Input pressure (PSI)
(GPM)
40
50
60
80
0.5
39.0
40.0
40.5
41.0
1.0
39.0
40.0
40.0
40.0
3.0
37.0
40.0
40.0
40.0
6.0
32.0
37.0
39.0
40.0
9.0
29.0
36.0
39.0
40.0
12.0
24.0
30.0
36.0
41.0
Flow rate vs. pressure
18-130 & 18-330
Flow
Input pressure (PSI)
(GPM)
40
50
60
80
0.5
29.2
29.5
29.9
31.0
1.0
29.0
29.5
29.5
30.0
3.0
29.5
29.3
29.6
29.6
6.0
28.0
28.5
29.0
29.3
9.0
24.0
27.0
29.0
29.5
12.0
22.0
24.8
29.0
30.0
37 pressure regulators
How to specify
18-025
18-030
18-325
18-330
18-335
18-340
18-130
25 PSI • 3/4′′ FNPT x 3/4′′ MNPT
30 PSI • 3/4′′ FNPT x 3/4′′ MNPT
25 PSI • 3/4′′ FNPT
30 PSI • 3/4′′ FHT x MHT
DRIP ZONE & PRESSURE REGULATORS