10Pcs 45mm/50mm Durable Pressure Diaphragm For Water Heater Gas Accessories Water Connection Heater Parts Black Features: brand new and lovely Material: Nitrile rubber, Features: dependable sealing and growing old resistance. Pressure diaphragm of 45mm/50mm fuel water heater. A nice helper for maintenance of water heaters, gas valves, etc. Mainly used to increase water pressure. When the water film ruptures, it's going to leak. When the water quantity is large, the water strain on the water movie will decrease, and there could also be almost no water leakage. When the amount of water is small, the water stress on the water movie will increase, but the leakage charge might 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 allow 1-2cm errors because of guide measurement, make sure that you don't intellect earlier than you order. 2 to the adaptation between different monitors, the picture won't reflect the actual colour of the item.