A speaking valve is a small, one-way valve that attaches to the end of a tracheostomy tube and redirects exhaled air up through the vocal cords, mouth, and nose. This restores the ability to speak, and it also brings back several other functions that are lost when a person breathes entirely through a tracheostomy opening in the neck. Speaking valves are used in hospitals, rehabilitation facilities, and at home by adults and children who have tracheostomy tubes in place.
How a Speaking Valve Works
When you breathe in, the valve opens and air flows down through the tracheostomy tube into the lungs, just as it would without the valve. The key difference happens on the exhale: the valve snaps closed, blocking air from exiting back through the tube. With nowhere else to go, exhaled air is forced upward past the vocal cords and out through the mouth and nose, the same route air takes in someone without a tracheostomy.
This redirection is what makes speech possible. Without a speaking valve, exhaled air simply exits through the tracheostomy tube in the neck, bypassing the vocal cords entirely. No air passes over the cords, so no sound is produced. With the valve in place, 100% of exhaled air flows through the upper airway, allowing a person to talk, cough more effectively, and even hum or sing.
For the valve to work properly, the inflatable cuff around the tracheostomy tube must be fully deflated. If the cuff stays inflated, it seals the space around the tube and blocks air from traveling upward to the vocal cords. Deflating the cuff creates a gap between the tube and the trachea wall, giving exhaled air the room it needs to pass through the upper airway. Interestingly, research shows that some air also flows down around the tube on inhalation (not just through the tube itself), which helps restore more natural breathing patterns through the nose.
Benefits Beyond Speech
Restoring voice is the most obvious benefit, but speaking valves do considerably more. By rebuilding airflow through the upper airway, they restore what’s called subglottic pressure, the air pressure below the vocal cords that the body relies on for several protective reflexes. This pressure helps close the vocal cords during swallowing, triggers a stronger cough reflex, and improves sensation in the throat. All of these reduce the risk of food or liquid slipping into the airway, a problem known as aspiration.
People using a speaking valve also produce fewer respiratory secretions. One study found that patients accumulated roughly 74 milliliters of secretions per day with the valve in place, compared to about 123 milliliters per day without it. That’s a meaningful reduction that translates to less frequent suctioning, which is more comfortable for the patient and easier for caregivers.
Smell improves as well. With a tracheostomy and no valve, very little air moves through the nose, which means odor molecules never reach the smell receptors. When the valve redirects exhaled air through the nasal passages, olfactory function significantly improves. In the same study, accuracy on smell identification tests jumped from about 8% without the valve to roughly 28% with it. Restoring smell also helps with appetite, since taste and smell are closely linked.
Who Can Use One
Cuff deflation is the primary requirement. If a patient cannot tolerate having the tracheostomy cuff deflated (because of severe swallowing problems or ventilator dependence that requires a sealed airway), a speaking valve cannot be used safely. Beyond that, clinicians look for a few additional criteria:
- Stable clinical condition, meaning no acute respiratory distress or rapidly changing vital signs
- Adequate alertness and the ability to participate, since the person needs to be conscious enough to breathe through the redirected airflow
- An unobstructed upper airway, so exhaled air has somewhere to go once the valve closes
- Manageable secretions, because thick or excessive mucus can block the airflow path
People with severe upper airway obstruction, significantly altered mental status, or thick secretions that can’t be adequately managed are generally not candidates. The tracheostomy tube itself also needs to be compatible with the specific valve being used.
Types of Speaking Valves
The Passy Muir Valve (PMV) is the most widely recognized brand, but several others exist, including the Tracoe phone assist, the Shiley Phonate, the Montgomery, and the Shakani. All function on the same basic principle of opening on inhalation and closing on exhalation.
One important design distinction is whether the valve rests in a closed or open position when not in use. A closed-position valve (like the Passy Muir) stays shut by default and opens only when the person actively inhales. Research has found that patients using a closed system have better airway protection and aspirate less than those using an open system. This is one reason the closed-position design is widely preferred in clinical practice.
Use With Mechanical Ventilation
Speaking valves can also be placed within a ventilator circuit, allowing patients who still need mechanical breathing support to speak. The setup requires the cuff to be fully deflated, with the valve placed in line with the ventilator tubing. Because no exhaled air returns through the circuit to the ventilator, the machine can’t measure exhaled volumes the way it normally would. Clinicians compensate by monitoring peak inspiratory pressure instead, which serves as an indicator that the lungs are receiving adequate ventilation.
Ventilator settings typically need adjustment when a speaking valve is added. Positive end-expiratory pressure (PEEP) is often reduced or turned off to prevent the ventilator from auto-cycling, and delivered volume may need to be increased to maintain adequate ventilation now that air is escaping through the upper airway rather than returning to the machine. Studies have shown that using a speaking valve during mechanical ventilation actually improves lung recruitment, meaning more of the lung tissue participates in gas exchange. Respiratory rate and carbon dioxide levels have both been observed to decrease during valve use, suggesting that breathing becomes more efficient.
Speaking Valves for Children
Children with tracheostomies face a unique challenge: they need airflow through the vocal cords not just for communication but for language development itself. Infants and toddlers learn to vocalize by experimenting with sounds, and a tracheostomy that diverts all air away from the vocal cords can delay or disrupt that process. A systematic review by the American Speech-Language-Hearing Association found strong evidence supporting the use of one-way speaking valves in pediatric patients from birth through age 18. Most of the evidence focused on how well children tolerate the valves, with further study still needed on the long-term effects on communication development. Still, the consensus supports early placement when clinically appropriate.
What to Expect During the First Use
The first time a speaking valve is placed, a speech-language pathologist or respiratory therapist will typically be present. Oxygen levels and heart rate are monitored with a pulse oximeter, especially during early sessions. The general guideline is to remove the valve if oxygen saturation drops below 93% or if heart rate increases more than 10 beats per minute above the resting rate. Signs of distress, such as excessive sweating, rapid breathing (above 18 breaths per minute), or elevated blood pressure, also signal that the valve should come off.
Many patients start with short periods of valve use, gradually building up tolerance over days or weeks. The initial sensation can feel unusual because exhaling through the nose and mouth again requires more effort than exhaling passively through an open tracheostomy tube. Some people describe a brief adjustment period before the new breathing pattern feels natural. Over time, most patients wear the valve for longer stretches during waking hours, removing it only for sleep or when secretions need to be suctioned directly through the tube.
Cleaning and Replacement
Speaking valves are reusable and need regular cleaning to function properly. Most manufacturers recommend rinsing the valve with warm water and mild soap after each use, then allowing it to air dry. The valve should never be soaked or cleaned with harsh chemicals, as this can damage the membrane that controls opening and closing. Over time, the valve will wear out and need replacement. Manufacturers typically provide guidelines on expected lifespan, and any valve that sticks, doesn’t close fully, or shows visible damage should be replaced immediately, since a malfunctioning valve can obstruct the airway.