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Thermoplastic Valves Product Guide & Engineering Specifictions
Tee-Style "Zero Dead-leg" Diaphragm Valves
Page 827 Suitable for Oil-Free air handling to 25 psi, not for distribution of compressed air or gas Spears
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Manufacturing Company
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Nominal
Size
Dimension Reference (±1/16)
A
Spigot
B1
Socket
Threaded
B2
CDEF
1/2 1-15/16 2-3/16 2-1/2 3-13/16 3-5/16 2-7/8 4-5/16
3/4 2-3/8 2-3/8 2-3/4 4-1/8 3-3/4 3-1/4 4-9/16
1 2-5/8 2-11/16 3-1/16 4-5/8 4-7/16 3-5/16 5-3/4
1-1/4 3-3/16 3-1/8 3-1/2 5-3/8 5-5/8 4-5/8 7-1/4
1-1/2 3-9/16 3-1/4 3-3/4 5-5/8 5-5/8 4-5/8 7-7/16
2 4-5/16 4-7/8 4-3/8 6-3/4 7 5-7/8 9-3/16
Nominal
Valve
Size
73°F to
100°F
110°F 120°F 130°F 140°F
1/2" - 2" 150 135 110 75 50
Valves have elevated temperature pressure ratings different than pipe, as shown in chart
above. Maximum PVC system service temperature is 140°F.
Valve
Size
PERCENT OPEN
100% 75% 50% 25%
1/2 5.1 4.8 4.2 2.4
3/4 8.0 7.5 6.5 6.5
1 11.5 10.8 9.4 9.4
1-1/4 22.0 20.6 18.0 18.0
1-1/2 28.2 26.4 23.0 23.0
2 52.9 49.6 43.2 43.2
Note: Cv values are for basic Diaphragm Valve only, excluding Tee end
connection.
Cv ValuesTemperature Pressure Rating
Dimensions
E
C
B2
F
D
A
B1