Green Rust Stains on Sea Cocks

[ronaldo]

Does anyone know of a product to remove green water stains off sea cocks

 

[ongolo]

If they are bronze, use mild solution of hydrochliric acid or oxalic acid. If the are green,mm its probably not rust but copper oxyd pattina.

Regards
WAH

 

[vyv_cox]

Safer and probably more effective to use abrasion. Wire brush, emery cloth, Brasso. Who wants acids slopping about in the bilges?

 

[oldsaltoz]

Cut uo a lemon and sprinkle with salt, applied and left for 10 minutes, re-apply as required. Cheap and effective.

Avagoodweekend......

 

[VicS]

Warm water to get rid of salt and anything else that's soluble. Vinegar to remove basic copper carbonate, ammonia to remove cuprous chloride. I'm not really sure what it'll be. You'll need plenty of ventillation for the ammonia though.

 

[mikejames]

The stains are there for a reason - that there is some water seepage.
One seacock on Forethought was particularly green. The spigot fitting on the outlet snapped off in my hand when I gave it a push. It had corroded through, due to de-zincification.

Fortunately the seacock was still working.