Most likely. The bottom line is, parts and products that Lowe's and HD carry are more often last years model. You will also find differences in quality. This will most likely be the case in the difference in product received from Lowe's than what is received from Sprinkler Warehouse. Choose sprinkler Warehouse and support people who specialize in the field of your concern.
Josh
Irrigation /Landscape Lighting / Pump and Well Specialist