I know some aren't fans of Rule products but I was just amazed by their customer service. Rule is owned by Xylem which also owns Jabsco, FlowJet and a few others. I emailed them this morning about a check valve for our Rule 98 Shower Sump.
Within 30 minutes they sent the right reply.
Thank you for your email. I am sorry to hear you are having problems with your shower drain system.
I have some of the check valves that I can put in the mail for you at no charge.
100 Cummings Center, Ste 535N (Ste 445D warranty)
Beverly, MA 01915
978-282-5276 direct line
Your Enquiry: I have a Rule 98 Shower Drain System that the internal check valve is bad. I have not been able to locate a replacement valve...