
	 In response to our customers' needs, Michigan Street Pump & Motor
		   is fully tooled to resurface both 4" and 6" check valves.
 
	is fully tooled to resurface both 4" and 6" check valves. 
Our process consists of building up the working surface with a uniform weld and then rough grinding the welded surface in preparation for machining. The next step is to face the working surface to the proper height at a 45 degree angle to the axis of the valve. Finally, the surface is ground to less than a 32 microfinish, insuring a durable and long lasting repair.
Shown below are the before and after machining photos of a 6" check valve.
 
	  
		 
	 