Geann ceramic disc cartridges are constantly tested with more than 500,000 cycles under endurance test conditions. Our specific seat design can prevent the installing pressure from the faucet seat for affecting the ceramic disc and control the turning torque steadily.   Geann Ceramic Disc are manufactured in standard size 3/8”, 1/2” and 3/4”, and other specification requested. We provide the ceramic cartridge in right turn closing (RTC) and left turn closing (LTC) version.   Geann has experience for many years in producing lead free products. We provide the lead free cartridge in stainless steel, plastic and lead free brass for different customers demand.   Geann lead free products use the finest material and high technologies. They also meet the California Bill AB1953, the lead content is lower than 0.25%, ROHS and NSF 61/9 ec. Available Sizes: 3/8”, 1/2”, 3/4” Version: Right Turn Closing (RTC) /Left Turn Closing (LTC) Material: Brass, Lead-Free Material, Stainless Steel, Plastic, POM, etc. Certificate: NSF-61/9, cUPC, WRAS, ACS , DVGW-KTW, WaterMark Passed Test: 500,000 times Life Cycle Test, Flow Rate Test, Burst Test (according to various standard such as ASME, CSA, CNS, EN200, EN817, JIS, etc.)