Start at the regulator, not the drinker

When a room has drippy drinkers, the instinct is to adjust the drinkers. It almost never works, because the cause is upstream. A bite valve that is asked to seal against too much pressure will weep, and no amount of adjustment at the cup changes that.

A diaphragm water control valve holds a set outlet pressure regardless of what the mains is doing. Fit one per room or per drinker line — not one for the whole house, because lines at different heights and lengths need different settings.

Set it, then verify at the far end

Set the outlet pressure to the figure for the drinkers you are feeding. Then go to the last drinker on the run and check the flow there. That is the animal that suffers from an under-set line, and it is the only place the setting can honestly be verified.

Record the setting on the valve so it can be restored after service.

Mounting height is the other half

A drinker mounted at the average animal's shoulder is too high for the smallest one in the pen. Set the height for the smallest, and check it again when a new batch comes in at a different size.

In a creep area, the piglet cup goes at piglet height, not at the sow drinker's height — which sounds obvious and is the single most common mounting error in a farrowing room.

When it really is the drinker

Grit on the valve seat is the other common cause of a weeping bite valve. Strip and clean the valve at batch change, particularly in hard-water areas or where the supply comes from a borehole.

A float bowl that overfills is usually a sticking float — a weekly check that takes a second per bowl.

Separate the piglet line where you can

Piglets and sows want very different flow rates. Where the system allows a separately regulated piglet line, take it. It is the cheapest way to get creep drinkers right without soaking the nest.

Keep the wearing part on the shelf

On the control valve, the diaphragm is the part that wears. It is replaceable in place, and keeping one spare means a failure never becomes a room without water.