The Bushing Check Valve (BU, BR) is a spring loaded check valve with a standard pipe bushing housing. The valve is adaptable to many types of service applications. It has very little restriction and produces a low-pressure drop. It can be used quite effectively in systems where flow and pressure drop are critical by the use of a reducer coupling. This spring check valve also makes an excellent vacuum breaker. The high flow rate insures maximum effectiveness for vacuum breaker service. By reversing the direction of flow it can also be used as a low-pressure relief valve.
The Bushing Check Valve thread sizes are designated by two sets of numbers; the first being the male thread, that second the femals thread. NPT threads are per ASME B1.201. Also available with ISO 7 “R” (R male x Rp female) threads (BR)
Size & Dimension
Normal Pipe Size
Size Code
A
Hex Size B*
C
D
E
F
Orifice Diameter
1/2 x 3/8
D
1.30
7/8
1/4
1/2 NPT
3/8 NPT
0.53
0.348
3/4 x 1/2
F
1.30
1-1/8
1/4
3/4 NPT
1/2 NPT
0.61
0.464
1 x 3/4
H
1.83
1-3.8
1/2
1 NPT
3/4 NPT
0.78
0.593
1 - 1/4 x 1
I
1.83
1-3/4
1/2
1-1/4 NPT
1 NPT
0.85
0.890
1 - 1/2 x 1-1/4
J
2.17
2
5/8
1-1/2 NPT
1-1/4 NPT
1.01
1.135
2 x 1-1/2
K
2.17
2-1/2
5/8
2 NPT
1-1/2 NPT
1.19
1.385
2-1/2 x 2
L
2.53
3
5/8
2-1/2 NPT
2 -1/2 NPT
1.43
1.555
3 x 2-1/2
M
3.09
3-1/2
1
3-NPT
1.59
2.025
NOTES (DIMENSIONS TABLE)
The bushing thread sizes are designated by two sets of numbers; the first being the male thread, the second the female thread.
Threads are per ASME B1.20.1.
*May be larger and/or round.
**Maximum nominal dimension for a fully open valve with no spring. Consult factory for more information.
Alloy 20 (A2)
Alloy C-276 (HC)
Alloy 400 or MONEL®(MO)
Semi-standard
Alloy B (HB)
Titanium (TI)
Contact the factory for these or other materials.
Seat material and spring material selection may limit the recommended service temperature.
See seat ratings, spring ratings, and body material ratings for their respective recommended service temperatures.
Consult the factory for reduced P-T rating above 100 °F. Standard spring material is 316 Stainless Steel.
Flow Data
PRESSURE DROP PSI
Size
AF Cv
AM Cv
1/2
2.2
2.2
3/4
3.8
4
1
7
7.1
1-1/4
13.1
16.6
1-1/2
16.0
16.6
2
31.7
40.3
2-1/2
52.6
57.9
3
65.8
75.4
4
120
124
FOR WATER AT 72 F
WATER FLOW RATE - GPM
Note: All flow curves and Cv values presume the valve are fully open with 1/2 PSI cracking pressure springs. Consult the factory for more information.
Valve Weights
SIZE
PART NUMBER
ALL MATERIALS
1/2
D
4.3 oz.
3/4
F
5.5 oz.
1
H
10.1 oz.
1-1/4
I
1.2 lb.
1-1/2
J
1.9 lb.
2
K
2.5 lb.
2-1/2
L
4.9 lb.
3
M
7.4 lb.
4
N
14 lb.
*BU size is designated by the male thread.
Seat & Cracking Pressure Options
Valve Style
Size Range
Body Materials
Other Options
Allowable Seat Materials
Other Options
Standard Cracking Pressures
Other Options
More Info.
