The Dometic 310 Series RV toilet uses a foot-operated gravity flush and a ceramic bowl. Its flush-ball seal, water valve, vacuum breaker, seat and mounting hardware can be identified individually on the numbered Dometic drawing below. Match the original toilet model and component number before ordering.

View Available Parts With Photos

310 exploded parts diagram

Open the manufacturer's numbered exploded drawing (PDF). On a phone, open the PDF directly to zoom in on each callout.

View the complete numbered drawing here

Parts by factory diagram number

No. Dometic part number Part description
1 385311641 Water valve kit
2 385230335 / 385316906 Vacuum breaker with hand-spray connection / standard vacuum breaker; includes item 3
3 385311164 Half-inch sealing grommet
4 385319054 White vacuum breaker and spray connection kit (optional)
5 385230319 Hand-sprayer mounting bracket (optional)
6 385340177 / 385345377 Supply hose, bone / white
7 385311646 / 385311647 Plastic seat and cover, white / bone; includes items 8 and 9
8 385311648 / 385311649 Seat bracket covers, white / bone
9 385311650 / 385311651 Seat mounting hardware, white / bone
10 385311652 / 385311653 Floor mounting hardware, white / bone; includes item 11
11 385311654 / 385311655 Floor mounting caps, white / bone
12 385311656 / 385311657 Pedal cover cap, white / bone
13 385311658 Flush-ball seal
14 385311124 White hand-sprayer kit (optional)

Which part should you check?

Bowl water disappearing: inspect the 385311658 flush-ball seal at the bowl outlet. Water still flowing: inspect the 385311641 water valve and pedal operation. Loose seat: match the white or bone 310 seat assembly and its mounting hardware. A floor leak calls for inspection of the floor connection rather than the bowl seal.

310 model identification

The related Dometic 320 has a different seat assembly and footprint. Parts that are shared by both series still need to be matched by their exact manufacturer number. Shut off the incoming water before servicing the valve or removing the toilet; follow the manufacturer's repair instructions.

Compare Dometic 300, 310 and 320 toilets by photo and dimensions to check bowl material, seat shape and installation clearances before choosing parts.

Dometic 310 parts with photos

Choose the pictured part to open its UsedRVParts listing. The small number below each image refers to the factory exploded drawing.

Other parts: vacuum breakers and optional hand-spray components

Hand-spray fittings differ from the standard arrangement. Use the exact part listed for the installed configuration.

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