JIS F 7409 16K SCS16 Stainless Steel Screw Down Check Globe ValvesMarine Screw Down Check Globe Valve is also called as marine SDNR Valve, marine stop check valve, marine globe non reutturn valve, marine globe check valve..etc.Function: ເປີດ/ປິດ. ລະບົບທໍ່ແລະປ້ອງກັນບໍ່ໃຫ້ flowback ຂະຫນາດກາງ. ມາດຕະຖານການອອກແບບ: JIS F7409-1996