Hose and Hose Assemblies. JGB's Hose, Fitting, and Valves Catalog
Request a Quote

Open-End Discharge

The term "open-end discharge" refers to a hose which empties a fluid into the atmosphere. Even though one end is open, the pressure is not low throughout the hose. The inlet end pressure is equal to that in the line to which the hose is connected unless the flow rate is so low that the hose is not completely filled.

The pressure along the hose length drops from a maximum at the inlet to zero at the outlet and the pressure at any given point along the length is nearly proportional to the distance from the hose inlet. The following table shows the flow in gallons per minute in open-end discharge service.

Open-End Flow (GPM)
Pressure at inlet, psi
Hose length, Feet
25
50
75
100
125
150
200
300
1/2" hose
30
40
50
60
70
80
90
100
125
10.4
12.1
13.8
15.2
16.6
18.0
19.0
20.1
22.8
6.2
8.5
9.4
10.4
11.2
12.1
13.0
13.8
15.5
5.6
6.2
7.5
8.5
9.0
9.8
10.4
11.0
12.5
4.8
5.6
6.4
7.1
7.8
8.5
8.8
9.4
10.5
4.3
5.0
5.6
6.2
6.8
7.3
7.7
8.5
9.4
3.8
4.5
5.1
5.6
6.2
6.6
7.1
7.5
8.5
3.3
3.8
4.0
4.9
5.3
5.6
6.0
6.4
7.2
2.6
3.2
3.5
3.8
4.2
4.5
4.8
4.9
5.8
5/8" hose
30
40
50
60
70
80
90
100
125
18.1
21.4
23.9
26.5
27.5
30.6
32.5
34.5
39.0
12.5 14.8
16.5
18.1
20.0
21.4
22.5
23.9
27.0
10.3
12.5
13.2
14.8
16.0
16.8
18.1
19.0
21.5
8.7
10.3
11.4
12.5
13.7
14.8
15.5
16.6
18.5
7.7
9.0
10.3
11.2
12.0
13.0
14.0
14.8
16.6
7.0
8.3
9.2
10.3
11.0
11.8
12.5
13.2
15.0
6.0
7.0
7.9
8.7
10.0
10.3
10.5
11.4
12.9
4.9
5.7
6.3
7.0
7.6
8.3
8.7
9.2
10.5
3/4" hose
30
40
50
60
70
80
90
100
125
31.0
36.0
41.0
45.5
49.5
53.0
56.2
60.0
68.0
21.3
25.0
28.0
31.0
34.0
36.0
39.0
41.0
46.0
17.2
20.0
22.5
25.0
27.2
29.1
31.0
33.0
37.5
14.8
17.2
19.2
21.3
23.5
25.0
27.0
28.0
32.0
13.0
15.2
17.2
19.0
21.0
22.0
23.8
25.0
23.0
11.8
13.8
15.5
17.2
18.8
20.0
21.3
22.6
25.8
10.2
11.8
13.2
14.8
17.1
17.2
18.2
19.2
21.8
8.2
9.4
10.7
11.8
12.8
13.8
14.8
15.5
17.5
1" hose
30
40
50
60
70
80
90
100
125
68.0
79.0
89.0
100.0
-
-
-
-
-
46.2
54.4
62.0
68.0
74.0
79.0
84.0
89.0
101.0
37.5
44.0
49.0
54.4
59.0
63.0
68.0
71.0
80.0
32.0
37.5
42.0
46.2
51.0
54.4
58.0
62.0
68.0
28.5
33.0
37.5
41.8
45.0
48.0
51.8
54.4
62.0
25.8
30.0
34.0
37.5
40.8
43.0
46.2
49.0
55.8
22.0
25.8
29.0
32.0
37.3
37.5
40.0
42.0
47.8
17.8
20.8
23.3
25.8
28.0
30.0
32.0
34.0
38.0
1 1/4" hose
50
75
100
150
-
-
-
-
110.0
130.0
150.0
-
85.0
110.0
125.0
150.0
72.0
90.0
110.0
130.0
56.0
80.0
92.0
120.0
58.0
73.0
85.0
110.0
50.0
64.0
73.0
90.0
42.0
52.0
58.0
67.0
13/8" hose
50
75
100
150
-
-
-
-
140.0
170.0
205.0
-
115.0
140.0
160.0
205.0
96.0
125.0
140.0
170.0
85.0
110.0
125.0
155.0
75.0
96.0
110.0
140.0
65.0
84.0
96.0
125.0
54.0
67.0
75.0
97.0
11/2" hose
50
75
100
150
-
-
-
-
180.0
230.0
260.0
-
150.0
180.0
220.0
260.0
130.0
160.0
180.0
230.0
120.0
145.0
170.0
205.00
105.0
130.0
150.0
180.0
90.0
120.0
130.0
160.0
74.0
90.0
105.0
130
2" hose
50
75
100
150
-
-
-
-
380.0
480.0
550.0
-
310.0
380.0
450.0
550.0
270.0
330.0
380.0
480.0
240.0
290.0
350.0
425.0
210.0
270.0
310.0
380.0
180.0
230.0
260.0
330.0
150.0
180.0
215.0
265.0

 

Thank you to Goodyear Tire & Rubber company. Source material Goodyear Catalog #99-130. Any errors in the transcription of this data are solely the responsibility of JGB Enterprises, Inc. No warranty, including implied warranty of merchantablility, fitness for a particular purpose, or other warranty of quality is either expressed or implied of this product.

Back to Top

 

 

Copyright © 2000 - 2010 JGB Enterprises, Inc. All Rights Reserved

115 Metropolitan Drive, Liverpool, NY 13088 (Syracuse Area)
Largest INDUSTRIAL and HYDRAULIC HOSE Company in Syracuse NY
Phone: 1 (315) 451-2770 Fax: (315) 451-8503  Contact us

NOTE: The product data on the web site is based on catalog information from the manufacturer. 
JGB is not responsible for any errors or changes to that data made by the manufacturer.