Sea toilet installation help required

[Windway]

My Orvea Italian sea toilet has black waste hand pumped via a reinforced plastic stainless spiral waste pipe to deck level with breather then big loop to stand pipe welded into hull above waterline and sea cock to close. Seems a proper job, but I wonder should there be a non-return valve fitted in the black waste line, in case the seacock failed?

Does anyone know, can anyone advise me and if so can you recommend a suitable NR valve to use in this application?

 

[prv]

The seacock failing is no different to the seacock being left open - in neither case will the water suddenly jump up the pipe to deck level to get over the loop and flood into your toilet. The pump already contains a one-way valve, otherwise it would be a mere poo-stirrer rather than a pump.

By the sounds of it you already have a solid and well-engineered system; leave well along. An extra valve with moving parts will just encourage blockages.

Pete

 

[Windway]

Thanks Pete

The seacock failing is no different to the seacock being left open - in neither case will the water suddenly jump up the pipe to deck level to get over the loop and flood into your toilet. The pump already contains a one-way valve, otherwise it would be a mere poo-stirrer rather than a pump.

By the sounds of it you already have a solid and well-engineered system; leave well along. An extra valve with moving parts will just encourage blockages.

Pete

 

[Steve Works]

I've had a similar issue and did install the other valve. Works just fine. I guess I'm just lucky..for now at least.
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Steve Works
install toilet
clogged toilet