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Through Hull Valves


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Agreed with above. BUT, have you considered one of the new composting toilets? Nature's Head, or Airhead? No throughhulls required, no holding tank, no issues about discharge,as there isn't any! If I was to replace one of my marine toilets, I'd seriously look at these. http://natureshead.net/marine.html or https://www.airheadtoilet.com/

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If you must go plastic, or more correctly Marelon or one of the other glass reinforced nylons, look at Hansen fittings, last I checked the tru-design valves were not full bore. I E the skin fittings and ID of the ball valves must be full diameter, no point having an 1 1/2" bsp valve (all manual marine toilets) and skin fitting if the id of the ball valve is just over an inch! These things are crucial on engine raw water intakes and exhausts and toilet outlets for a trouble free life.

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If you must go plastic, or more correctly Marelon or one of the other glass reinforced nylons, look at Hansen fittings, last I checked the tru-design valves were not full bore. I E the skin fittings and ID of the ball valves must be full diameter, no point having an 1 1/2" bsp valve (all manual marine toilets) and skin fitting if the id of the ball valve is just over an inch! These things are crucial on engine raw water intakes and exhausts and toilet outlets for a trouble free life.

 

Very true Waikiore but I thought all Hansen Valves were BSPT as opposed to True Designs BSP which can make it a bit awkward if you don't have a BSPT thu hull.

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