We are proud to inform you that we have obtained UL Listed certification also for our Swing check valves 200PSI/250PSI/300PSI/365PSI both models: Resilient Seated Grooved Ends Fig. 50GG Download Datasheet Resilient Seated Grooved Ends Riser (Shotgun) Fig. 50GGP Download Datasheet Swing Check Valves aren't our only certified product. Check out all of our certifications here: https://galaxyvalves.net/certification/ In conclusion, we are costantly working on improving our offer. Therefore, the range of certified products will keep on growing.