Broken valve- diesel fuel in greasetank, and vice versa

So I got the new SV-98 valve and installed it, but diesel was still pouring into the Greasecar tank.  I put my hand on the valve, and I felt the new valve click, but did not feel the old valve click.  When I took that valve out, it also was broken, the same plastic pieces!  I followed the Greasecar instructions to pry the valve out by the base with a screwdriver.  The plastic piece just crumbled in my fingers.  It appears to me that heat and fuel may have deteriorated the plastic.  I do not believe that I broke the valve removing it, and if I did, then there is a problem with the SV-98 valve, because I followed directions exactly and was very gentle with it.

I emailed Greasecar and Conor directly, but after 3 days, they still had not responded to my emails.  I called Greasecar (during business hours) and left a message, but no one called me back.  The next day, I called Greasecar again, to order another valve, but this time, customer service wasn't so great.  When Rick answered, I said, "Hey Rick, this is Kirk, you sent me that new valve out last week?"  Rick just said, "Yeah..."  No, "How you doing?", no "how'd that valve work out?", etc.  Just, "yeah." and silence. 

I explained that the old valve was broken in the same place.  Rick said that I had broken the valve taking it out.  I replied that I followed the greasecar website instructions exactly.  Then he said that I should have checked the valves every 6 months for poly buildup (I had done so) and that poly build up would cause the valve to stick.  My valves were clean and had no poly on them, which surprised me since I had trouble with my flat plate heat exchanger getting all poly'd up.

I asked if they could give me a better price on the second valve, but he said "no."  I got the feeling I was annoying Rick so I just said I would call back later to order a new valve.

I was disappointed with the Greasecar customer service.  I am sorry if my problems with their product "irritated" the customer service rep.

You can remove the valves by following the instructions on the greasecar website. To see if the valves are working, have someone else power on the valves, one at a time, while you keep your hand on the valve. You should feel and hear a very noticeable click. If no click, check your ground wires first. I used an electrical multimeter so determine if the valves were getting power and if the ground was connected. Then take valves out and see if there is a clog or broken parts.