Abstract: A gate or gate-type valve is used as a flow regulating device specifically for use in saturated gaseous, high particulate, high temperature, and low pressure environments such as in landfill gas wellfields and similar environments where particulate and water gathering can obstruct the operation of a typical gate valve. The valve has a T-shaped body with a fluid flow tube and a transverse plunger tube. A plunger threads into the plunger tube to define a fluid-tight seal between the plunger and the plunger tube and has a distal end that opens and closes the fluid flow tube as the plunger is rotated between open and closed positions.