Metered-Dose Dispensing Valves

A metered-dose valve releases the same amount of product every time it is actuated, however hard or long it is pressed. A small metering chamber inside the valve fills with a fixed volume between actuations and discharges just that volume when the stem is depressed, so an inhaler delivers a consistent dose and a metered spray a consistent shot.

That repeatable volume is what separates a metered valve from a continuous spray valve, and it matters wherever the amount delivered counts — above all in inhaled, nasal and oral drug delivery.

We supply metered valves for metered-dose inhalers, nasal and oral sprays, pharmaceutical aerosols, topical metered sprays, breath fresheners, veterinary sprays and technical dosing aerosols. Outside pharma, they suit any product where the user should get the same small amount with every press, such as breath sprays, flavor dosing and precise technical sprays where overuse wastes product or affects results. Veterinary and animal-health brands use the same principle for consistent dosing.

The valve consists of a body with a defined metering chamber, elastomer seals, a stem and a spring, crimped to the container neck by a ferrule and topped by an actuator. Chamber volume sets the dose; common sizes are around 25, 50, 63 and 100 µl. Pharma-grade valves use controlled, low-extractable materials, and we can supply material documentation for the grade you choose.

A metered valve works as one part of a system with the container, formulation, propellant and actuator, so it is selected and tested as that complete system. Seal compatibility with the propellant and formulation, dose consistency through can life, spray pattern and priming are all characterized during development. Valves are crimped on aerosol filling equipment set to the ferrule and container. Share your container, formulation and target dose and we’ll propose valves for evaluation.

Valves are precision-assembled from molded and machined parts, elastomer seals and the metering chamber, then function-checked for dose volume and leak-tightness. Chamber volume consistency, seal integrity and material traceability are the key controls. We supply valves in clean, controlled packing, matched to your container neck and actuator, and can source compatible actuators and containers so the system arrives as one set.