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166:MReturn to Excess Flow Check Valve - Model 166

Model 166 M Dimensions
Model 166 M Dimensions

Flow Rating

The table on the following page shows the range of flow rates available for common fluids. Each size valve has several different spring options that can be used to vary the closing flow rate. Please contact MGM for assistance in choosing the proper spring for your specific application.
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LIQUID FLOW RATES (GALLONS PER MINUTE) VAPOR FLOW RATES (SCFM*)
SPRING Delta P CV WATER NH3 PROPANE BUTANE AIR NH3 PROPANE BUTANE
X733 0.3 87.6 48 61 67 63 514 670 417 363 Get Quote
X723 0.6 82.6 65 83 91 85 696 908 564 491 Get Quote
X743 0.7 82.5 71 90 99 93 760 992 616 537 Get Quote
X596 1.5 84.1 103 131 144 135 1,103 1,438 894 779 Get Quote
X673 3.1 76.1 134 171 188 175 1,435 1,871 1,163 1,013 Get Quote
X395 5.0 66.2 148 188 207 194 1,585 2,067 1,284 1,119 Get Quote
X520 6.2 76.3 190 242 266 249 2,035 2,653 1,649 1,436 Get Quote
X590 7.0 77.3 205 261 287 268 2,195 2,863 1,779 1,550 Get Quote
X589 8.7 74.9 221 281 310 289 2,367 3,086 1,918 1,670 Get Quote
X561 8.8 76.2 226 288 317 296 2,420 3,156 1,961 1,708 Get Quote
X588 14.5 72.7 277 353 388 363 2,966 3,868 2,404 2,094 Get Quote

*Vapor flow rates are shown at 60 degrees F, 100 psig