siphon flushing valve 1) Height optional 2) Suit for two-piece toilet 3) Stainless steel hook 4) Thread:1.5-11.5Npsm-1 B5012-1 siphon flushing valve* Ajustable height* Suitable for two piece toliet.* All products are compliant with international standards---WRAS,UPC,CUPC,CE.* 200,000 times life test---Stirct QA & QC.* Customized color,package,design.* Novelty and practical mould development and ...