10Pcs 45mm/50mm Durable Pressure Diaphragm For Water Heater Gas Accessories Water Connection Heater Parts Black Features: brand new and advantageous Material: Nitrile rubber, Features: dependable sealing and getting old resistance. Pressure diaphragm of 45mm/50mm gasoline water heater. A nice helper for maintenance of water heaters, fuel valves, etc. Mainly used to extend water pressure. When the water film ruptures, it'll leak. When the water volume is large, the water stress at the water film will decrease, and there may be virtually no water leakage. When the amount of water is small, the water pressure at the water film will increase, but the leakage charge would be faster. The Package Includes: 10 items of 45mm/50mm size. Specifications: Material: Plastic Weight: 25g/35g Size: 45mm/50mm Color: Black Package Includes: 1x Pressure Diaphragm Note: 1 enable 1-2cm mistakes due to handbook measurement, just be sure you do not mind before you order. 2 to the variation between assorted monitors, the image will not reflect the particular color of the item.