P-39 Inlet Valve Adapter – Central Vacuum

The P-39 inlet valve adapter is a custom-made, in-house PVC fitting designed specifically for InterVac central vacuum inlet valves. It provides a clean and secure transition from the back of the wall inlet valve (where the hose plugs in) directly into standard female central vacuum fittings such as the D-900 coupling or other common female pipe fittings.

Professional installers love the P-39 because it simplifies connections, eliminates awkward joints, and ensures a strong, airtight seal that maintains maximum suction and airflow throughout the system. Precision-molded from durable PVC, this adapter is built for reliability and easy glue installation with standard central vacuum PVC pipe and fittings.

Key Features:

• Custom-designed for InterVac inlet valves
• Connects inlet valve back to female fittings (including D-900)
• High-quality PVC construction for long-term durability
• Creates a secure, airtight connection
• Maintains smooth airflow and powerful suction performance
• Made in-house by InterVac Design for perfect fit every time

Whether you’re installing a new central vacuum system or upgrading an existing one, the P-39 inlet valve adapter is the ideal solution for a professional, trouble-free connection. Also commonly referred to as a central vacuum inlet valve connector, wall inlet back adapter, or inlet-to-coupling transition fitting.

Perfect for residential and light commercial central vacuum installations.