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Ductile Iron - Class 150 - Swing Wafer Style
Click here to download cut sheet for this product.
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Sizes: 2" ~ 12"
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Class 150
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Swing-Wafer Style
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Buna-N Seat
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Stainless Trim
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Model: CV 31-DI
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Automatic Shut-Off
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Minimizes Water Hammer
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Minimal Head Loss
WORKING PRESSURE & TEMPERATURE
NON-SHOCK |
WOG: (water, oil, gas)
Ductile Iron ASTM A536 Class 150 |
250 PSI @ 100 F (1) |
| Buna-N Seat |
-20 ~ 250 F |
1. As the temperature increases, the load capacity of the spring diminishes significantly. At higher temperatures, Inconel Springs must be used.
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Ductile Iron check valves offer higher pressure ratings than Cast Iron check valves. For example, Ductile Iron check valves (2" ~ 24") are rated at 250 PSI WOG. By comparison, Cast Iron check valves (2" ~ 12") are rated at 200 PSI WOG and (14" ~ 24") are only rated at 150 PSI WOG. |
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| Features:
Shut-off is achieved via the fully automatic, spring- assisted disc that closes at zero flow velocity
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Quick closure of the disc reduces water hammer by creating a positive shutoff prior to flow reversal
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Head loss is minimized by providing a compact face- to-face and a virtually unobstructed flow path
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Ductile iron body maintains the anti-corrosive properties of cast iron while achieving a yield strength comparable to carbon steel
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Can be installed in any position: vertical (with upward flow only) or horizontal
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Anti-corrosive, stainless steel trim (disc, spring, and shaft) are standard
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Field replaceable soft seat (o-ring) and precision machined disc ensure a bubble-tight seal
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Narrow face-to-face dimensions and lightweight design provide an economical, space-saving solution
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