This pumps water into a hydro-press from a storage reservoir/tank large enough to fill the press, recycling the water instead of wasting mains water.
It supplies water automatically at up to about 4½ bar pressure.

Einhell, with 20 litre membrane-lined stainless steel pressure-tank under the pump,
                     1" bsp female threads on inlet and outlet, 220 volt, 1100 or 1250 Watt.

Suction fittings for inlet: assembled:
    plastic filter and non-return valve, to rest at the bottom of the tank of water to be recycled,
    with 4 metres of 25 mm plastic suction hose, with 1" bsp male thread fitting for attachment to the pump.

Required for the outlet: 1" bsp male thread and hose-tail to 13 mm hose.

Other things you will need to obtain:-

1. A water storage reservoir, with at least the same volume as the hydro-press. It can be an old plastic tank, but it needs to be situated below the outlet level of the hydro-press, as after pressing the water drains out of the hydro-press by gravity.

2. A length of 'garden hose' (13 mm internal diameter) to connect the outlet of the Einhell to the inlet of the hydro-press.

3. A length of 20 mm internal diameter hose to connect the outlet of the hydro-press to the top of the water reservoir; so the water can drain back into the reservoir. 20 mm internal diameter hose is necessary or it would take a very long time to drain.

4. Three hose-clips to secure the hose to the hose-tails.

5. When you first connect the two Einhell fittings, you need some white ptfe tape (normal plumbing type) to wrap around the bsp threads.

Initially, the pump needs to be primed and the pressure tank filled:-

Connect the hose-tail fitting and 13 mm hose to the outlet of the Einhell.

Before connecting the suction hose to the inlet of the Einhell, fill the suction hose with water using a jug, then connect the suction hose to the pump; the connection must be air-tight. Unless there is water in the suction hose the pump will run without pumping any water. The suction end (with filter and non-return valve) must be put under water, resting near the bottom of the reservoir; it should be kept permanently under the water, for as long as the system is being used throughout the pressing season.
Switch the pump on. When the water starts to flow the non-return valve will open, let the water flow around the tubes and back to the reservoir.
Then switch off the pump and connect the 13 mm hose to the hydro-press inlet, and the 20 mm hose to the outlet of the hydro-press, with the other end of the hose over the top of the water reservoir.

Switch the pump on again, then when the water is flowing close the tap/valve on the inlet to the hydro-press. Leave the pump running and wait until the 24 litre pressure-tank is full; the pressure on the gauge will increase until around 4.5 bar, at which point the pump will stop automatically. When it stops the suction non-return valve will close.

The hydro-press can then be filled. The outlet tap/valve is then closed and the inlet tap/valve opened slightly so that water flows slowly into the hydro-press.

The pump switches on to replenish the water in the pressure-tank when it falls below around 2.5 bar. The pump runs only for a short time, to restore the pressure to 4.5 bar.

Note: a 1" bsp ball-valve can be fitted directly on the outlet of the pump; the ball-valve can be closed after use, before disconnecting the hose. The pressure tank will then remain full and under pressure, so that priming is not necessary the next time the system is used.

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