Philips Whisper Swivel II Exhalation Port for CPAP & BiPAP Masks

If you use an older Respironics CPAP or BiPAP mask, the Whisper Swivel II is the small but essential component that keeps your therapy working the way it should. This exhalation port (Philips part 332113) attaches between your mask and tubing to vent exhaled carbon dioxide out of the circuit, so you're breathing in fresh, pressurized air throughout the night rather than rebreathing CO₂.

The reason it matters is comfort and safety. Many older masks were designed without integrated vents, relying instead on a separate swivel exhalation port to release air. Over time these ports can crack, discolor, or become noisy — often the culprit behind the whistling, hissing, or rattling that disrupts sleep. Replacing a worn Whisper Swivel II restores quiet operation and consistent pressure delivery, which is why many long-term therapy users keep a spare on hand.

A common question we hear is whether this port fits a given mask. The Whisper Swivel II is intended for selected older Respironics CPAP/BiPAP masks that use a separate exhalation device rather than a newer mask with built-in venting. If your current mask already exhales air through diffuser vents in the cushion or frame, you likely don't need this part. Checking your mask's original components or manual is the surest way to confirm compatibility before ordering.

The swivel design also allows the tubing to rotate freely, reducing drag on the mask and letting you change sleeping positions without pulling the seal loose — a detail that makes a real difference for restless sleepers.

Explore our full range of CPAP and respiratory replacement parts to keep your equipment performing reliably, and browse related respiratory and monitoring categories such as Champ Propac II and Cardiosens Ultra II for additional patient care equipment.