The product is a good quality product when purchased new. Best in the industry. I took a chance and bought this one used. Product was represented as "slightly used" and priced fair at approximately half of new. The 1st time I used the control valve, it leaked and would not control or stop the flow of grease. I dismantled the valve assembly and found debris and a small piece of fine wire stuck in the internal check valve component. After a good cleaning and reassembly, the control valve seems to work good. I got lucky on this one!
Verified purchase: Yes | Condition: Pre-owned
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