Dental Vacuum Systems: How to Choose.

A dental vacuum is the pump, the piping, and the separation that create suction at the high-volume evacuator. Saliva ejectors, HVE valves, traps, and line cleaner are the parts in the operatory. The existing evacuation product list covers those. This guide is about the machine in the mechanical room.

How to choose a dental vacuum

• Wet-ring or dry. A wet-ring pump uses a stream of water as its seal and sends liquids out a drain. A dry pump cannot drink the slurry from the mouth, so liquids have to be separated before the air reaches it. Dry systems use less water. Wet systems are simpler and use water whenever they run.
• Users, not chairs. Size the pump for how many high-volume evacuators run at the same time. Two hygienists and a doctor using suction together are three users, even in a five-chair office.
• Amalgam separation. The device that keeps amalgam out of the plumbing is not the pump. If you place or remove amalgam, quote a separator with the vacuum unless the office already has one that is still in service. The amalgam separator guide covers that device.
• Nitrous scavenging is a different line. Scavenger vacuum is a low, continuous draw for a nasal hood. It is not the HVE valve. The nitrous system guide covers that connection.
• Where the pump sits. Long pipe runs lose suction at the chair. The mechanical room has to handle the noise, the heat, the drain on a wet system, and a technician who can reach the unit.

How common vacuum lines differ

Treat the table as product differences, not a score. The dealer’s user count is the number that matters.

Brand	Known for	Best fit	Watch for
DentalEZ Ramvac	Dry vacuums sized for a few users up to a larger clinic	Offices that want a dry pump and already buy DentalEZ chairs or compressors	Confirm how many users the quoted model is rated for, not the family name
Air Techniques	VacStar dry vacuums	Offices comparing a dry pump against Ramvac	Ask which separator is included. The pump name alone is not the whole system
Dürr Dental	Both wet-ring suction units and dry systems that separate liquids first	Offices outside the large U.S. chair packages, or replacing a Dürr unit	The quote must say wet-ring or dry. Those are different installations
Cattani	Turbo Smart dry suction, often chosen for noise and variable speed	Offices where the mechanical room is close to patients	Service coverage is the question, not the brochure decibel number
Midmark	PowerVac wet-ring vacuums, plus dry options on later quotes	Offices that already have a Midmark wet vacuum in the closet	A replacement quote can switch you from wet to dry. Read which one you are signing

DentalEZ Ramvac

Ramvac is DentalEZ’s dry vacuum line. Offices that already standardized on DentalEZ compressors or chairs often stay here so one dealer covers the mechanical room. The buying number is how many users the specific model is rated for. Two Ramvac names can be different sizes.

Air Techniques

VacStar is the dry vacuum Air Techniques sells next to its compressors. Cross-shop it with Ramvac on user count, separator, and who stocks the service kit. A lower pump price with the separator left off is not a lower system price.

Dürr Dental

Dürr sells suction units that many offices know from European equipment packages. Some are wet-ring pumps. Others are dry systems with separation ahead of the pump. Those need different drains, different water use, and different service. Do not accept a quote that only says “Dürr suction.”

Cattani

Turbo Smart is Cattani’s variable-speed dry suction. Offices look at it when the pump has to live near treatment rooms and a single-speed wet pump would be too loud. The useful test is whether a technician in your area already services Cattani, not the sound figure in the brochure.

Midmark

PowerVac is the wet-ring vacuum a large number of U.S. offices already have. If that is what failed, a like-for-like wet replacement is the simple path. Midmark also quotes dry vacuums. Switching from wet to dry changes the plumbing. Make the quote say which one you are buying.

Related guides

• Operatory equipment
• Suction tips, traps, and line cleaners
• Nitrous oxide systems
• Dental air compressors

Vacuum questions

Is the saliva ejector the vacuum system?

No. The saliva ejector and the high-volume valve are the ends in the mouth. The system is the pump, the piping, and the separation in the mechanical room.

Do I need an amalgam separator?

If the office places or removes amalgam, most U.S. rules require a separator before waste reaches the sewer. Buying a pump does not automatically include one. Ask for it as its own line.