Brochure
Thermoplastic Valves Product Guide & Engineering Specifictions
True Union Ball Check Valve (Regular Style)
Page 737 Suitable for Oil-Free air handling to 25 psi, not for distribution of compressed air or gas Spears
®
Manufacturing Company
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ect to Chan
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Dimensions, Weights, C
v
Values & Horizontal Closing Requirements
Temperature Pressure Rating
Replacement Parts
1: Valve Lay Length
2: Consists of 4" True Union Ball Check Valve with two 4" x 6" Adapters.
3: Gallons per minute at 1 psi pressure drop.
C
v
Values for 6" venturied flange and socket valves are not available.
NOTE: Flanged Valves have a base pressure rating of 150 psi.
General Installation Information: Ball check valves may be installed in either horizontal or vertical position. A minimum
of ten (10) pipe diameters distance maintained from any pump or other source of turbulence. Ball Check valves MUST be
installed with the valves FLOW arrow pointing in the direction of flow.
1
3
4
5
6 7
8
9
G
2
C
B
A F
Nominal
Size
Dimension Reference (inches, ± 1/16) Approx. Wt. (Lbs.) Cv
3
Values Horizontal Closing
AB
1
C F G PVC CPVC
Threaded/
Socket
Flanged
Feet of
Head
(water)
GPM (mini-
mum)
1/2 2-9/16 3-5/16 5-1/8 3-1/2 3-7/16 .56 .61 11 10 1.6 .10
3/4 3 4 6-1/8 3-7/8 3-15/16 .91 .99 18 17 1.6 .10
1 3-7/16 4-1/4 6-1/2 4-1/4 4-3/8 1.20 1.30 32 30 1.6 .25
1-1/4 3-11/16 4-1/2 7 4-5/8 4-9/16 1.50 1.60 58 55 1.6 .40
1-1/2 4-3/8 5-5/16 8-1/16 5 5-1/4 2.50 2.70 94 89 1.6 .75
2 5-1/8 5-3/4 8-3/4 6 5-5/8 3.70 4.00 153 146 1.6 .75
2-1/2 7-3/8 8-5/16 11-7/8 7 7-1/4 11.10 12.21 159 155 1.0 1.50
3 7-3/8 8-1/8 11-7/8 7-1/2 7-1/2 10.84 11.91 378 361 1.0 4.00
4 8-15/16 8-1/4 12-15/16 9-1/16 8-1/8 17.60 19.36 551 537 1.0 5.50
6 Socket
2
8-15/16 19-5/8 26-1/16 N/A N/A 22.45 27.61 N/A N/A N/A N/A
6 Flanged
2
11-3/16 29-3/8 N/A 11-1/4 14-3/4 31.21 37.07 N/A N/A N/A N/A
No. Component Qty. Material
1 Ball 1
PVC/CPVC
2 Seal Carrier 1
PVC/CPVC
3 Carrier O-ring 1
EPDM/FKM
4 Seat Plate 1
PVC/CPVC
5 Seat O-ring 1
EPDM/FKM
6 Body 1
PVC/CPVC
7 Union Nut 2
PVC/CPVC
8 End Connector O-ring 2
EPDM/FKM
9 End Connector 2
PVC/CPVC
System Operating
Temperature °F (°C)
100
(38)
110
(43)
120
(49)
130
(54)
140
(60)
150
(66)
160
(71)
170
(77)
180
(82)
190
(88)
200
(93)
210
(99)
Valve
Pressure
Rating
psi
(MPa)
1/2" - 2"
PVC
235
(1.62)
211
(1.45)
150
(1.03)
75
(.52)
50
(.34)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
CPVC
235
(1.62)
219
(1.51)
170
(1.17)
145
(1.00)
130
(.90)
110
(.76)
90
(.62)
80
(.55)
70
(.48)
60
(.41)
50
(.34)
-0-
(-0-)
2-1/2" - 6"
PVC
150
(1.03)
135
(.93)
110
(.76)
75
(.52)
50
(.34)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
-0-
(-0-)
CPVC
150
(1.03)
140
(.97)
130
(.90)
120
(.83)
110
(.76)
100
(.70)
90
(.62)
80
(.55)
70
(.48)
60
(.41)
50
(.34)
-0-
(-0-)