• Y-Pattern Check Valves
Y-pattern globe valves provide the maximum Cv possible in a globe valve. All Y-pattern valves are rodable. Available in 1/2" to 4"; ASME pressure classes through 4500; A105, F22, F91, F316, F347, Inconel™, Monel™ and other materials.
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Nominal/Intermediate ASME Pressure Class Ratings

Pipe Size (in)

Pipe Size (mm)

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Item Description

Nominal/Intermediate ASME Pressure Class Ratings

Pipe Size

Socket Weld A

Stop Check Valve Flow (Cv)

N/A 1/2 Inch (in) Pipe Size, 900 Nominal Pressure Class, and 3D Size Y-Pattern Check Valve N/A 900 N/A 1/2 in15 mm N/A 3.75 in95 mm N/A 5
N/A 3/4 Inch (in) Pipe Size, 900 Nominal Pressure Class, and 5E Size Y-Pattern Check Valve N/A 900 N/A 3/4 in20 mm N/A 4.50 in114 mm N/A 8
N/A 1 Inch (in) Pipe Size, 900 Nominal Pressure Class, and 5F Size Y-Pattern Check Valve N/A 900 N/A 1 in25 mm N/A 4.50 in114 mm N/A 13
N/A 1 1/4 Inch (in) Pipe Size, 900 Nominal Pressure Class, and 5G Size Y-Pattern Check Valve N/A 900 N/A 1 1/4 in32 mm N/A 4.50 in114 mm N/A 21
N/A 1 1/2 Inch (in) Pipe Size, 900 Nominal Pressure Class, and 6H Size Y-Pattern Check Valve N/A 900 N/A 1 1/2 in40 mm N/A 5.50 in140 mm N/A 31
N/A 2 Inch (in) Pipe Size, 900 Nominal Pressure Class, and 7J Size Y-Pattern Check Valve N/A 900 N/A 2 in50 mm N/A 6.25 in158 mm N/A 53
N/A 2 1/2 Inch (in) Pipe Size, 900 Nominal Pressure Class, and 8K Size Y-Pattern Check Valve N/A 900 N/A 2 1/2 in65 mm N/A 7.25 in184 mm N/A 75
N/A 3 Inch (in) Pipe Size, 900 Nominal Pressure Class, and 9L Size Y-Pattern Check Valve N/A 900 N/A 3 in80 mm N/A N/A 106
N/A 4 Inch (in) Pipe Size, 900 Nominal Pressure Class, and 10M Size Y-Pattern Check Valve N/A 900 N/A 4 in100 mm N/A N/A 157
N/A 1/2 Inch (in) Pipe Size, 1500 Nominal Pressure Class, and 3D Size Y-Pattern Check Valve N/A 1500 N/A 1/2 in15 mm N/A 3.75 in95 mm N/A 5
N/A 3/4 Inch (in) Pipe Size, 1500 Nominal Pressure Class, and 5E Size Y-Pattern Check Valve N/A 1500 N/A 3/4 in20 mm N/A 4.50 in114 mm N/A 8
N/A 1 Inch (in) Pipe Size, 1500 Nominal Pressure Class, and 5F Size Y-Pattern Check Valve N/A 1500 N/A 1 in25 mm N/A 4.50 in114 mm N/A 13
N/A 1 1/4 Inch (in) Pipe Size, 1500 Nominal Pressure Class, and 6G Size Y-Pattern Check Valve N/A 1500 N/A 1 1/4 in32 mm N/A 5.50 in140 mm N/A 21
N/A 1 1/2 Inch (in) Pipe Size, 1500 Nominal Pressure Class, and 7H Size Y-Pattern Check Valve N/A 1500 N/A 1 1/2 in40 mm N/A 6.25 in159 mm N/A 33
N/A 2 Inch (in) Pipe Size, 1500 Nominal Pressure Class, and 8J Size Y-Pattern Check Valve N/A 1500 N/A 2 in50 mm N/A 7.25 in184 mm N/A 54
N/A 2 1/2 Inch (in) Pipe Size, 1500 Nominal Pressure Class, and 9K Size Y-Pattern Check Valve N/A 1500 N/A 2 1/2 in65 mm N/A 9.00 in229 mm N/A 75
N/A 3 Inch (in) Pipe Size, 1500 Nominal Pressure Class, and 10L Size Y-Pattern Check Valve N/A 1500 N/A 3 in80 mm N/A N/A 106
N/A 4 Inch (in) Pipe Size, 1500 Nominal Pressure Class, and 10L Size Y-Pattern Check Valve N/A 1500 N/A 4 in100 mm N/A N/A 106
N/A 1/2 Inch (in) Pipe Size, 2500 Nominal Pressure Class, and 3C Size Y-Pattern Check Valve N/A 2500 N/A 1/2 in15 mm N/A 3.75 in95 mm N/A 3
N/A 3/4 Inch (in) Pipe Size, 2500 Nominal Pressure Class, and 5E Size Y-Pattern Check Valve N/A 2500 N/A 3/4 in20 mm N/A 4.50 in114 mm N/A 8
N/A 1 Inch (in) Pipe Size, 2500 Nominal Pressure Class, and 5E Size Y-Pattern Check Valve N/A 2500 N/A 1 in25 mm N/A 4.50 in114 mm N/A 8
N/A 1 1/4 Inch (in) Pipe Size, 2500 Nominal Pressure Class, and 7G Size Y-Pattern Check Valve N/A 2500 N/A 1 1/4 in32 mm N/A 6.25 in159 mm N/A 21
N/A 1 1/2 Inch (in) Pipe Size, 2500 Nominal Pressure Class, and 7G Size Y-Pattern Check Valve N/A 2500 N/A 1 1/2 in40 mm N/A 6.25 in159 mm N/A 21
N/A 2 Inch (in) Pipe Size, 2500 Nominal Pressure Class, and 8H Size Y-Pattern Check Valve N/A 2500 N/A 2 in50 mm N/A 7.25 in184 mm N/A 33
N/A 2 1/2 Inch (in) Pipe Size, 2500 Nominal Pressure Class, and 9J Size Y-Pattern Check Valve N/A 2500 N/A 2 1/2 in65 mm N/A N/A 54
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