a center axis of valve housing 30 in connection with the foregoing and as best shown in fig1 b and fig2 it should also be noted that the center axes of the valve side ports 32 34 36 38 and the center axes of apertures 52 54 of control member 20 are disposed to facilitate various aligned relationships therebetween in particular the center axes of coplanar ports 32 34 and 38 are offset at 90 u00b0 intervals about the center axis of valve housing 30 on the other hand apertures 52 and 54 of control member 20 are offset 180 u00b0 about the center axis of valve housing 30 by virtue of noted relative relationships control member 20 may be rotatably positioned relative to valve housing 30 to selectively provide for the passage of liquid between port 34 and port 40 in a first position between port 38 and port 40 in a second position and between port 40 and port 36 in a third position additionally when in the third position control member 20 also provides for direct passage of liquid between port 32 and port 36 further in this regard it should be noted that when the control member 20 is positioned in each of the first and second positions aperture.