10 barG 1/4" NPT 50mm REAR entry Glycerin filled stainless steel pressure gauge.

As fitted to WSI NSF55 TESTED model WSA4N.

These gauges are fitted into the SS Filter Head using an ORing for sealing. (Oring supplied with gauge).

Gauges are used to help with:

• determining which cartridge is causing a pressure loss
• indicating how close you are to your cartridges becoming 'plugged'
• knowing when you have reduced the systems pressure to 0 before you try undoing the filter sump. Any pressure will make this very difficult.