The water distribution riser for manufactured homes must have how many valve outlets?

The requirement for the water distribution riser for manufactured homes to have two valve outlets is grounded in both safety and functionality. Having two outlets on the distribution riser allows for the isolation of different sections of the plumbing system. This is particularly important for maintenance and repair purposes, as it enables one outlet to be shut off while the other remains operational.

Furthermore, with two valve outlets, there's enhanced control over the water supply, ensuring that even if one valve is closed for repairs or inspection, the other can continue to provide water to necessary fixtures. This configuration enhances the overall resilience and reliability of plumbing in manufactured homes, accommodating the unique needs of these structures.

The other options, suggesting one, three, or four valve outlets, would not meet the standard requirements as efficiently as having two. While one outlet may suffice in very basic scenarios, it would limit the ability to isolate sections effectively. Conversely, three or four outlets may introduce unnecessary complexity without providing significant additional benefit for the average application within manufactured homes. Thus, two outlets strike the best balance for effective plumbing management in these installations.