Internal Water Pipes of Outdoor Mobile Toilets

The specifications of internal water pipes for outdoor mobile toilets and winter insulation measures are as follows:

Water Pipe Specifications

The specifications of internal water pipes in outdoor mobile toilets vary depending on their purposes. The most mainstream and standard specification for the toilet waste outlet (main pipe) is dn110mm (φ110). This specification is suitable for the vast majority of mobile toilets, meeting the waste discharge needs of toilets and ensuring smooth drainage. The specification for the sink drain outlet is dn50mm (φ50). As a smaller branch pipe, it is used to discharge wastewater from the sink, and its specification design aligns with the relatively small drainage volume of sinks. The specification for the inlet pipe is dn33mm (1-inch pipe), which is mainly used to supply water to the mobile toilet, ensuring that water demands for handwashing, toilet flushing, etc., are met.

Winter Insulation Measures

• Wrapping for insulation: For components such as water pipes and faucets exposed outdoors, insulation materials like cotton and linen fabrics, foam plastics, and old clothes can be used for tight wrapping. These materials have good insulation properties and can effectively reduce heat loss. The joints are key areas for insulation and require special reinforcement. After wrapping, a layer of waterproof plastic cloth can be added on the outside to prevent moisture and further enhance the insulation effect.
• Dripping to prevent freezing: When the temperature drops below 0°C, the faucet can be turned to a fine stream state at night, similar to a thin thread. Keeping the water flowing inside the pipes can prevent freezing because moving water is less likely to reach the freezing temperature. The dripping water can be collected in containers and used for activities like washing up, achieving the goal of water conservation.
• Draining stored water: If the mobile toilet is not in use for a long time, the main water valve should be closed, and then the faucet should be opened to drain the stored water in the pipes. For users with solar water heaters, the accumulated water in the water pipes should be drained in advance to prevent the water from freezing and expanding, which could damage the pipes.
• Environmental insulation: Close the doors and windows of the restroom to reduce air circulation between the indoor and outdoor environments and keep the indoor temperature above 0°C. Insulation materials such as straw mats can also be placed indoors to further improve the indoor insulation performance.
• Installing heating equipment: Auxiliary heating equipment can be installed by wrapping it around the water pipes. When the temperature drops below minus 2 degrees Celsius, this equipment will automatically heat up to prevent the water inside the pipes from freezing, ensuring the normal use of the water pipes.