Franklin pressure tanks store a reserve of water under pressure for household water supply, irrigation and pressure-boosting systems. A flexible rubber diaphragm separates the water from compressed air, allowing small amounts of water to be used before the pump starts. Fewer starts reduce start/stop wear and can lower electricity use and running costs. Pipe-mounted tanks connect to supported pipework, while floor-mounted tanks stand on a base. Horizontal tanks provide a different mounting arrangement where an upright tank does not suit the installation.
Choose the mounting arrangement, nominal tank capacity and water connection to suit the installation. Nominal capacity describes the vessel size. The usable amount of water between pump starts depends on the pump start and stop pressures and the tank air charge.
8L - vertical pipe mounted. Water connection: 1" BSP male thread.
18L - vertical pipe mounted. Water connection: 1" BSP male thread.
35L - vertical pipe mounted. Water connection: 1" BSP male thread.
35L - vertical floor mounted. Water connection: 1" BSP male thread.
60L - vertical floor mounted. Water connection: 1" BSP male thread.
80L - vertical floor mounted. Water connection: 1" BSP male thread.
100L - vertical floor mounted. Water connection: 1" BSP male thread.
150L - vertical floor mounted. Water connection: 1" BSP male thread.
20L - horizontal floor mounted. Water connection: 1" BSP male thread.
60L - horizontal floor mounted. Water connection: 1" BSP male thread.
Nominal tank capacity is the vessel size, not the amount of water available before the pump restarts. Usable draw-off depends on the pump’s start and stop pressures and the tank air charge. Size the tank for the usable draw-off and pump cycling requirements of the system.
The diaphragm separates the stored water from the air cushion. The tank has a corrosion-resistant stainless steel water connection, a butyl-rubber diaphragm and a polyurethane paint finish over an epoxy primer. It is suitable for potable-water systems.
The tank can also be used for suitably designed thermal-expansion applications. Match the tank to the system’s temperature and pressure requirements.
Set the air charge to suit the pump/controller and system pressures. Release water pressure before checking or adjusting the air charge, and follow the instructions for the actual tank and control type.
Five-year manufacturer tank-replacement guarantee, subject to its terms.
