Abstract: A fluid integrating system (10) includes an integrating manifold (30) having two or more input fluid inlets (132) disposed at oblique angles relative to a center axis of the integrating manifold (30). The two or more input fluid inlets (132) intersect in the integrating manifold (30) to define an integrating chamber (112). The fluid integrating system also includes a pressure sensor (110) fluidly connected to the integrating chamber (112) that is operable to send a pressure signal indicative of the pressure of the fluid in the integrating chamber (112). A integrating controller (22) is operatively coupled to the two or more valves (60) and to the pressure sensor (110) and is operable to selectively control the flow of input fluids into the integrating chamber (112) by actuating the two or more valves (60) based on the pressure signal received from the pressure sensor (110).

Abstract: A golf club head made of a ferrous metal and having a density in the range from about 5 to about 6.8 g/cm3 and from about 7.0 to about 7.4 g/cm3, and such heads made of a cast ferrous metal having a density in the range from about 5 to about 7.4 g/cm3. The entire golf club head may be made of such ferrous metal. Or, the ferrous metal is preferably a ductile iron or gray iron. The ferrous metal may be present as an insert in the ball hitting face of the club head, and the body of the club head may be a material different from the ferrous material. Or, the body of the club head may be made of the ferrous metal and the ball hitting face of the club head may be a different material.