When original valves are not available anymore, original valves are in bad quality, or we can't find exact valves, we have the right to use our own replacement valves, without prior notice. We guarantee proper functionality of the bladders where we had to replace original valves with our own or replacement ones. All bladders are Quality Control (QC) tested prior shipping. A 30 percent return fee applies on all our custom bladders. All bladders have limited 1 year warranty. UniPUMP one pump valves have 3 years of limited warranty. We operate under Terms & Conditions. Brand logos, pictures and any other related material is property of their respectful owners and may be only of symbolic nature.