1.  There are two basic spud designs:

a. The standard clamp-in spud (VHJSP2)

b. The screw-in spud

2.  Into one of these spuds you screw a Large Bore Swivel Valve. While
all Large Bore Valves vary in bend, length, and appearance, they all have a
swivel feature (VHJ650). An O-ringseals into the valve spud and is tightened down with a
swivel nut.

3.  To service the inside dual there are three types of extensions offered:

     a. A rigid extension
     b. A hand-bendable extension
     c. A flexible extension