Fluid Control Valve

A fluid control valve, comprising:

• a housing body including
• a pipe part having a flow passage therein;
• and
• a valve housing part including a valve chamber, a valve opening, a pair of flat surfaces and an open end, wherein the valve housing part has a central axis oriented perpendicular to a central axis of the pipe part, the valve opening fluidly communicating the valve chamber with the flow passage, wherein the flat surfaces are disposed on opposite sides of a plane including the central axis of the valve housing part and the central axis of the pipe part, wherein each of the flat surfaces extends perpendicularly to the central axis of the valve housing part;
• a valve member housed in the valve chamber and configured to open and close the valve opening;
• a cap closing the open end of the valve housing part;
• and
• a spring disposed between the valve member and the cap, wherein the spring biases the valve member toward the valve opening.