Abstract: A metering and well selection valve group, comprising a rotary type metering distributor with multiple shells; after entering the shells, an elbow extends from one side of shells; the part of elbow positioned in the shells is provided with filtering holes. Filtered fluid outlets are provided on the shells. Multiple check and stop dual purpose angle valves are corresponding to the quantity of shells, each one has a valve with an inlet pipe, a valve stem, a valve base, a valve element is provided on the inside of valve base, a handwheel is mounted on the outer end of valve stem. A first spring is mounted between the spring stop and the valve element. The outlet pipe of filtered fluid is communicated with the outlet of filtered fluid on the case body on the rotary metering distributor. Through the first valve, the extended part of elbow is communicated with the blocking removal fluid outlet chamber on the case body on the rotary metering distributor.

Abstract: A metering and well selection valve group, comprising a rotary type metering distributor with multiple shells; after entering the shells, an elbow extends from one side of shells; the part of elbow positioned in the shells is provided with filtering holes. Filtered fluid outlets are provided on the shells. Multiple check and stop dual purpose angle valves are corresponding to the quantity of shells, each one has a valve with an inlet pipe, a valve stem, a valve base, a valve element is provided on the inside of valve base, a handwheel is mounted on the outer end of valve stem. A first spring is mounted between the spring stop and the valve element. The outlet pipe of filtered fluid is communicated with the outlet of filtered fluid on the case body on the rotary metering distributor. Through the first valve, the extended part of elbow is communicated with the blocking removal fluid outlet chamber on the case body on the rotary metering distributor.