What is the usual suggested location for a horizontal valve stem?

The recommended position for a horizontal valve stem is typically at chest height. This positioning allows for optimal accessibility and operation of the valve while maintaining safe and ergonomic practices. When the stem is located at this height, it ensures that the operator can easily reach and operate the valve without unnecessary strain or risk of injury.

If the valve stem were positioned at eye level, it may be too high for comfortable access in a horizontal alignment, potentially leading to awkward body positioning. Waist height could make it difficult to reach comfortably without bending or stretching. Placing the stem above head height would generally require the operator to support their weight and could be dangerous, especially in situations where the valve needs to be operated frequently or under pressure.

Thus, establishing the valve stem at chest height strikes a practical balance, allowing for efficient operation while minimizing physical strain on the user.