During a rough-in for a new bathroom, a plumber needs to make a tight 90-degree turn with 25 mm Uponor AquaPEX (PEX-a) potable water tubing. The available space is very limited, and traditional fittings would be too bulky. What is the most appropriate method to achieve this bend while maintaining flow and system integrity?

Question: During a rough-in for a new bathroom, a plumber needs to make a tight 90-degree turn with 25 mm Uponor AquaPEX (PEX-a) potable water tubing. The available space is very limited, and traditional fittings would be too bulky. What is the most appropriate method to achieve this bend while maintaining flow and system integrity?

Answer options:

• Use a standard brass elbow fitting for a sharp turn.
• Apply heat with a torch to soften the PEX and bend it. ✅ Utilize a PEX bend support or a PEX-specific bending tool to create a smooth radius bend.
• Install two 45-degree angle PEX fittings in series to make a 90-degree turn.

Correct answer: Utilize a PEX bend support or a PEX-specific bending tool to create a smooth radius bend.

Explanation: PEX tubing can be bent to a specific radius, and PEX bend supports or specific bending tools are designed to facilitate this without kinking the tubing, especially for tight turns. Applying heat with a torch can damage the PEX, and while elbows can be used, bending the tubing is often preferred for fewer connections and reduced flow restriction. Two 45s would take up more space in a limited area.