The heal inlet of a "heal inlet one-quarter bend" shall be installed only in which position?

The heal inlet of a "heal inlet one-quarter bend" must be installed in a vertical position to ensure proper function and compliance with plumbing codes. This specific positioning is crucial because it facilitates efficient drainage and minimizes the potential for blockages. In vertical alignment, gravity assists in moving waste through the bend, reducing the risk of accumulation and maintaining overall system performance.

Installing the heal inlet in other positions, such as horizontal or at a horizontal to vertical angle, may disrupt the flow dynamics and could lead to increased chances of clogging or improper drainage. Therefore, the vertical installation position is the standard prescribed by plumbing codes, ensuring that the system operates effectively and adheres to safety and performance regulations.