Brochure
Thermoplastic Valves Product Guide & Engineering Specifictions
Industrial Swing Check Valves
Made in the U.S.A. Suitable for Oil-Free air handling to 25 psi, not for distribution of compressed air or gas Page 800
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Application of Counter Balance
Swing Check Valves operate in response to a fluid stream flow opening a swinging disc. As the fluid stream slows and
reverses, the disc responds by swinging to the closed position. Sudden reversal of flow direction can result in “slamming”
condition as the disc closes. The function of the Counter Balance mechanism is to start the disc closing earlier as the fluid
stream begins to slow so that it is almost closed when flow reversal takes place, thereby eliminating slamming of the disc.
Available as installed unit with valve or as a kit for adaptation of installed valves.
Arrow Position Indicator Kit
Spears
®
Swing Check Valve Indicator Kit is designed for field
installation of external Indicator Arrow in Spears
®
Swing Check
Valves. This kit can be installed through the bonnet assembly and
removal of valve from line is not required.
Kit Includes:
1 - Extended Shaft
2 - Shaft Cup Seals
1 - Shaft Nut
1 - Indicator Arrow
1 - Retaining clip
Counter Balance Kits
Spears
®
Swing Check Valve Counter Balance Kit is designed
for field installation of counter balance mechanism in Spears
®
Swing Check Valves. This kit can be installed through the bonnet
assembly and removal of valve from line is not required.
Kit Includes:
1 - Extended Shaft
2 - Shaft Cup Seals
1 - Shaft Nut
1 - Counter Balance
1 - Retaining Bolt
1 - Flat Washer
1 - Extra Weight Plates
(1-small & 1-large)
1 - Plate Mounting Bolts
(2-long & 2 short).
Temperature Pressure Rating
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)
3/4" – 4"
PVC
150
(1.03)
135
(.93)
110
(.76)
75
(.52)
50
(.34)
-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-
PP
150
(1.03)
105
(.72)
90
(.62)
80
(.55)
75
(.52)
65
(.45)
55
(.38)
50
(.34)
45
(.31)
-0- -0- -0-
6"
PVC
100
(.70)
90
(.62)
80
(.55)
65
(.38)
50
(.34)
-0- -0- -0- -0- -0- -0- -0-
CPVC
100
(.70)
95
(.66)
90
(.62)
85
(.59)
80
(.55)
75
(.52)
70
(.48)
65
(.45)
60
(.41)
55
(.38)
50
(.34)
-0-
PP
100
(.70)
90
(.62)
85
(.59)
75
(.52)
70
(.48)
60
(.41)
55
(.38)
50
(.34)
45
(.31)
-0-
-0- -0-
8"
PVC
70
(.48)
65
(.45)
60
(.41)
50
(.34)
45
(.31)
-0-
-0- -0- -0- -0- -0- -0-
CPVC
70
(.48)
65
(.45)
62
(.43)
60
(.41)
57
(.39)
55
(.38)
52
(.36)
50
(.34)
45
(.31)
42
(.29)
40
(.28)
-0-
PP
70
(.48)
60
(.41)
57
(.39)
55
(.38)
52
(.36)
50
(.34)
47
(.32)
45
(.31)
40
(.28)
-0- -0-
-0-
Valve Size
Part Numbers
PVC Kit CPVC Kit PP Kit
3/4
I3K-007 I3K-007C I3K-007P
1
I3K-010 I3K-010C I3K-010P
1-1/4 & 1-1/2
I3K-015 I3K-015C I3K-015P
2
I3K-020 I3K-020C I3K-020P
2-1/2 & 3
I3K-030 I3K-030C I3K-030P
4
I3K-040 I3K-040C I3K-040P
6
I3K-060 I3K-060C I3K-060P
8
I3K-080 I3K-080C I3K-080P
Valve Size
Part Numbers
PVC Kit CPVC Kit PP Kit
3/4 CB3K-007 CB3K-007C CB3K-007P
1 CB3K-010 CB3K-010C CB3K-010P
1-1/4 & 1-1/2 CB3K-015 CB3K-015C CB3K-015P
2 CB3K-020 CB3K-020C CB3K-020P
2-1/2 & 3 CB3K-030 CB3K-030C CB3K-030P
4 CB3K-040 CB3K-040C CB3K-040P
6 CB3K-060 CB3K-060C CB3K-060P
8 CB3K-080 CB3K-080C CB3K-080P