Add to Cart Quick view MKS Instruments 1000 SCCM Mass Flow Control Valve 1/16" FNPT 251-100 MKS Instruments Was: $53.00 Was: $125.00 MKS Instruments 251-100 1000 SCCM Mass Flow Control Valve 1/16 FNPT Condition: UsedThis item has been inspected and it is in good condition. 20306 SKU: 20306 Weight: 1.00 LBS