Patent ID: 9593554
Date: 2017-03-14
CPC Classifications: E21B,F16K

Claim:
1. A valve, comprising: a housing defining an inner volume, wherein the housing has an inlet port and an outlet port; a seal member disposed in the housing between the inlet port and the outlet port; a first stem disposed in the housing, wherein the seal member engages an outer diameter of the first stem to form a seal, the seal between the seal member and the first stem divides the inner volume to an inlet volume and an outlet volume, a fluid channel is formed through the first stem, the fluid channel has an inlet and an outlet, the inlet of the fluid channel opens to the inlet volume, the first stem is movable relative to the seal member so that the outlet of the fluid channel travels across the seal member; and a second stem disposed in the housing between the seal member and the outlet port.