ProFlex
™
in-line flanged rubber check valves
720
STYLE
Detail of
ProFlex
In-Line Flanged Rubber Check Valve; Style 720
Notes: Higher back pressures can be obtained by using Internal Supports, contact PROCO.
Dimensions are approximate and may change due to pipe dimension changes, inlet, back pressures and flow rates.
1. Larger sizes available upon request.
2. Weights are approximate.
Bolt
Hole
Dia.
Equally Spaced
Bolt Holes
A
A
Nominal
Pipe Size
Valve I.D.
Length
Duckbill
Height
Flange O.D.
Flange Thickness
Existing Pipe
A
Direction Of
Flow
Table 2: Sizes • Drilling • Working Pressures • Weights
2
(50)
5.75
(146)
1.875
(48)
6.00
(152.40)
4.75
(120.65)
4 0.750
(19.1)
125
5
(2.3)
3
(80)
9
(229)
2.875
(73)
7.50
(190.50)
6.00
(152.40)
4 0.750
(19.1)
125
8
(3.6)
4
(100)
12
(305)
3.875
(98)
9.00
(228.60)
7.50
(190.50)
8 0.750
(19.1)
100
11
(5.0)
5
(125)
15
(381)
4.875
(124)
10.00
(254.00)
8.50
(215.90)
8 0.875
(22.2)
75
13
(5.9)
6
(150)
15.5
(394)
5.875
(149)
11.00
(279.40)
9.50
(241.30)
8 0.875
(22.2)
75
17
(7.7)
8
(200)
16.5
(419)
7.875
(200)
13.50
(342.90)
11.75
(298.45)
8 0.875
(22.2)
75
20
(9.1)
10
(250)
21
(533)
9.875
(250)
16.00
(406.40)
14.25
(361.95)
12 1.000
(25.4)
50
29
(13.2)
12
(300)
26
(660)
11.875
(302)
19.00
(482.60)
17.00
(431.80)
12 1.000
(25.4)
50
47
(21.3)
14
(350)
25
(635)
13.000
(349)
21.00
(533.40)
18.75
(476.25)
12 1.250
(31.8)
50
61
(27.7)
16
(400)
27
(686)
15.000
(400)
23.50
(596.90)
21.25
(539.75)
16 1.250
(31.8)
50
94
(42.6)
18
(450)
29
(737)
17.000
(451)
25.00
(635.00)
22.75
(577.85)
16 1.250
(31.8)
25
158
(71.7)
20
(500)
34
(864)
19.000
(502)
27.50
(698.50)
25.00
(635.00)
20 1.250
(31.8)
25
234
(106.1)
24
(600)
44
(1118)
23.000
(603)
32.00
(812.80)
29.50
(749.30)
20 1.375
(34.9)
25
308
(139.7)
28
(700)
47
(1194)
27.000
(687)
36.50
(927.10)
34.00
(863.60)
28 1.375
(34.9)
25
362
(164.2)
30
(750)
49
(1245)
29.000
(737)
38.75
(984.25)
36.00
(914.40)
28 1.375
(34.9)
25
417
(189.1)
32
(800)
54
(1372)
31.000
(787)
41.75
(1060.45)
38.50
(977.90)
28 1.625
(41.3)
25
454
(206.0)
36
(900)
59
(1499)
35.000
(889)
46.00
(1168.40)
42.75
(1085.85)
32 1.625
(41.3)
25
499
(226.3)
42
(1050)
63
(1600)
41.000
(1041)
53.00
(1346.20)
49.50
(1257.30)
36 1.625
(41.3)
25
729
(330.7)
48
(1200)
74
(1880)
47.000
(1194)
59.50
(1511.30)
56.00
(1422.40)
44 1.625
(41.3)
25
754
(342.0)
54
(1350)
75
(1905)
53.000
(1346)
66.25
(1682.75)
62.75
(1593.85)
44 2.000
(50.8)
25
813
(368.8)
60
(1500)
83
(2108)
59.000
(1499)
73.00
(1854.20)
69.25
(1758.95)
52 2.000
(50.8)
25
964
(437.3)
72
(1800)
99
(2515)
71.000
(1803)
86.50
(2197.10)
82.50
(2095.50)
60 2.000
(50.8)
25
1125
(510.3)
NOMINAL
1
PIPE SIZE
Inch / (mm)
WEIGHT
2
lbs / (kgs)
Standard Dimensions for PROCO Style 720
Standard Drilling for PROCO Style 720
No. of
Holes
Size of Holes
Inch / (mm)
Length
Inch / (mm)
Duckbill Height
Inch / (mm)
Flange O.D.
Inch / (mm)
Bolt Circle
Inch / (mm)
MAXIMUM
WORKING
PRESSURE
(PSIG)