Cylinder Drain Valves & Operating Gear

Following,  is the construction of the cylinder drain valves and operating gear.
The drain valves were purchase from Blackgates.
Two left hand and two right hand valves. 
The cross shaft has a yoke on each end.
There are a few rods to the cross shaft.
This is the reach rod.
This is the operating lever. Forward for closed, back for open.
There are a total of four valves.
This is the rod that ties a pair of valves together.
The yoke moves a pin on each tie rod.
Everything is attached with taper pins.
The reach rod goes all the way back to the cab.