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 ageing resistance. Pressure diaphragm of 45mm/50mm gas water heater. A nice helper for upkeep of water heaters, fuel valves, etc. Mainly used to extend water pressure. When the water film ruptures, it's going to leak. When the water number is large, the water strain at the water film will decrease, and there's almost no water leakage. When the amount of water is small, the water stress on the water movie will increase, but the leakage fee could also be faster. The Package Includes: 10 goods of 45mm/50mm size. Specifications: Material: Plastic Weight: 25g/35g Size: 45mm/50mm Color: Black Package Includes: 1x Pressure Diaphragm Note: 1 allow 1-2cm mistakes because of instruction manual measurement, simply make sure you don't mind before you order. 2 to the variation between various monitors, the image may not mirror the actual shade of the item.