Wing nut for Black Berkey and BOROUX Foundation Black filters

Features of the wing nut for Black Berkey and BOROUX Foundation™ Black filter elements:

• Wing nut (complies with food safety requirements) used to secure a Black Berkey or BOROUX Foundation™ Black filter element in the system

• Every set of Black Berkey filter elements and BOROUX Foundation™ Black filter elements is supplied with wing nuts as standard; if they are lost or damaged, you can therefore also order them separately

• This wing nut is only for use with the Black Berkey filter elements or BOROUX Foundation™ Black filter elements and must be used in combination with a Ring for Black Berkey and BOROUX Foundation™ Black filters

• This wing nut cannot be replaced by a wing nut for other types of filter elements

Using wing nuts for Black Berkey and BOROUX Foundation™ Black filter elements

PLEASE NOTE! Do not tighten the wing nuts as hard as you can. This is not actually possible, because the rubber ring sits on the other side of the hole. Because it is flexible, it naturally allows for a little play. If you keep tightening, the flexibility will eventually run out and too much tension will be placed on the wing nut. This can damage the groove of the wing nut. Our advice is therefore simply to tighten it until it is ‘on’ (you feel resistance); that is sufficient.