... x 28 x 18cmGross Weight: 4 kgsMaterialPump head: PVC, PVDF Diaphragm: PTFE Valve: PVC, PVDFValve ball: Ceramic Valve seat: Viton Tubing ... normal frequency(at running or stop).Glandless and leakage free diaphragm pumps.Low power consumption.Drive by electromagnetism,simple design,the ... , daily chemicals, food industry, constructions industry, and etc.Measurements JLM pump diaphragm