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The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2014 Johnson Controls, Inc.
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V–357
Code No. LIT-1900037
Valve Sizing Steam Applications
Two-Position Applications: The valve is normally sized to be the same as the pipe, using the largest Cv available for a given pipe size.
Modulating Applications: Select the valve to meet the BtuH requirements of the coil.
Assumptions:
• The table assumes an atmospheric return.
• Minimum coil BtuH calculated assuming a pressure drop across the valve of 50% of supply pressure.
• Maximum coil BtuH calculated assuming a pressure drop across the valve of 80% of supply pressure.
Steam Sizing
VG1000 Series Ball Valves, Cv 1.2 to 7.4
Available
Pipe Size
NPT, in.
1/2 1/2 1/2 1/2
3/4
1/2
3/4
1
Cv 1.2 1.9 2.9 4.7 7.4
Steam
Supply
Coil BtuH Coil BtuH Coil BtuH Coil BtuH Coil BtuH
Pressure
Drop, psi
Minimum Maximum Minimum Maximum Minimum Maximum Minimum Maximum Minimum Maximum
1 10,700 13,600 17,000 21,500 25,900 32,800 42,000 53,200 66,200 83,700
2 15,600 19,800 24,700 31,300 37,800 47,800 61,200 77,400 96,400 121,900
3 19,600 24,800 31,100 39,300 47,500 60,000 76,900 97,300 121,100 153,200
4 23,300 29,500 36,900 46,700 56,300 71,200 91,200 115,400 143,700 181,700
5 26,700 33,700 42,200 53,400 64,400 81,500 104,400 132,100 164,400 208,000
6 29,900 37,900 47,400 59,900 72,300 91,500 117,200 148,300 184,600 233,400
7 33,000 41,800 52,300 66,100 79,800 100,900 129,300 163,600 203,600 257,600
8 36,100 45,600 57,100 72,200 87,200 110,300 141,300 178,700 222,400 281,400
9 39,000 49,400 61,800 78,200 94,300 119,300 152,900 193,300 240,700 304,400
10 42,000 53,100 66,400 84,000 101,400 128,300 164,300 207,900 258,700 327,300
11 44,800 56,700 71,000 89,800 108,300 137,000 175,600 222,100 276,400 349,600
12 47,600 60,300 75,400 95,400 115,100 145,600 186,600 236,000 293,800 371,600
15 56,000 70,900 88,700 112,200 135,400 171,300 219,500 277,600 345,600 437,100
VG1000 Series Ball Valves, Cv 11.7 to 73.7
Available
Pipe Size
NPT, in.
1/2
3/4
1
1
1-1/4
1-1/2
1-1/4
1-1/2
2
1-1/2
2
2
Cv 11.7 18.7 29.2 46.8 73.7
Steam
Supply
Coil BtuH Coil BtuH Coil BtuH Coil BtuH Coil BtuH
Pressure
Drop, psi
Minimum Maximum Minimum Maximum Minimum Maximum Minimum Maximum Minimum Maximum
1 104,700 132,400 167,300 211,600 261,200 330,400 416,800 527,200 659,200 833,800
2 152,400 192,700 243,500 308,000 380,300 481,000 606,900 767,600 959,800 1,214,100
3 191,500 242,300 306,100 387,200 478,000 604,600 762,800 964,900 1,206,400 1,526,000
4 227,100 287,300 363,000 459,200 566,800 717,000 904,600 1,144,300 1,430,700 1,809,700
5 260,000 328,900 415,600 525,700 648,900 820,800 1,035,600 1,309,900 1,637,800 2,071,700
6 291,800 369,100 466,400 589,900 728,200 921,200 1,162,200 1,470,100 1,838,100 2,325,000
7 322,000 407,300 514,600 650,900 803,500 1,016,400 1,282,400 1,622,100 2,028,100 2,565,400
8 351,700 444,900 562,100 711,000 877,700 1,110,200 1,400,800 1,771,800 2,215,400 2,802,200
9 380,500 481,300 608,200 769,300 949,600 1,201,200 1,515,500 1,917,000 2,396,800 3,031,800
10 409,100 517,500 653,800 827,000 1,021,000 1,291,400 1,629,300 2,061,000 2,576,900 3,259,500
11 437,000 552,800 698,500 883,500 1,090,700 1,379,600 1,740,600 2,201,700 2,752,800 3,482,100
12 464,500 587,500 742,400 939,000 1,159,200 1,466,300 1,850,000 2,340,100 2,925,900 3,700,900
15 546,400 691,100 873,200 1,104,600 1,363,600 1,724,800 2,176,100 2,752,600 3,441,600 4,353,300
Valve Sizing and Cross-Reference
Zone and Fan Coil Valves
Valve Sizing and
Cross-Reference