Unlined Valves

Metal Unlined

  • Ductile Iron
  • Carbon Steel
  • 316L Stainless
  • Alloy 20
  • Other Materials Available
Valve Options
Bubble-Tight Shutoff

Bubble-Tight shutoff

On pressure or vacuum applications, zero leakage in accordance with MSS SP-88.

Throttling

Throttling

Ideal for both on/off and modulating applications. Streamline flow path is cavity free for excellent control capabilities.

Streamline Flow / Bidirectional

Streamline Flow / Bidirectional

Smooth contoured body design has no cavities or pockets for smooth flow and contamination-free performance. Hills-McCanna valves can be oriented to facilitate self draining.

Valve Sizing Constants (Cv), Metallic Unlined
    Percent of Stem Travel
Valve Size Turns* 10 20 30 40 50 60 70 80 90 100
0.5 3 0.8 1.6 2.4 3.3 4.4 5.3 6 6.6 6.9 7
0.75 3-3/4 1.5 3 4.2 6.5 8.2 9.7 11 12 12.8 13
1 4-1/2 2.5 6 9.5 13 16.5 19 21.5 23 24 24
1.25 4-3/4 4.5 8.5 14 18 22.5 27 29.5 31.5 32.5 33
1.5 5-3/4 9 18.5 27 35 42 47 51 53.5 55 65
2 7-1/4 16 30 43 53 62 69 74 78 80 81
2.5 7-1/4 23 45 64 81 94 105 113 119 123 125
3 7-1/2 35 69 104 134 160 180 194 202 207 209
4 10-3/4 78 148 208 259 296 321 338 350 357 360
6 15-3/4 165 300 425 525 610 680 735 775 795 805
8 18 210 425 635 840 1025 1180 1290 1360 1390 1400
10 20-1/4 300 600 865 1120 1370 1590 1770 1890 1950 1970
12 22-3/4 430 870 1290 1650 1960 2220 2400 2520 2580 2600
  * Approximate turns to close
Weights of Standard Hills-McCanna Diaphragm Valves
Threaded End, Butt Weld End, Socket End (approximate - in pounds)
Size 1/2" 3/4" 1" 1-1/2" 2" 2-1/2"
Solid Plastic 1 2 2.75 6 10.5 ---
All Others 2 2.5 4 9.5 15 27
Flanged End (approximate - in pounds)
Size 1/2" 3/4" 1" 1-1/2" 2" 2-1/2" 3" 4" 6" 8" 10" 12"
PVC 1.5 2.25 3.5 7 12.75 --- --- --- --- --- --- ---
All Others 4 5 7 13 22 36 49 97 170 360 600 885

Pressure/Temperature Recommendations

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