MMS

Mixing valve

Specifications

This valve only mixes large oil particles with air - ideal for clean spray applications without fine mist formation. Robust and easy to maintain.

Datasheet (PDF)

Mixing valve for air-oil lubrication

The mixing valve combines a precisely metered quantity of oil with compressed air to form the air-oil mixture used in minimum quantity lubrication. It is the component that turns a measured dose of oil and a stream of air into a controlled aerosol or oil-air flow at the point of use. The oil side is metered by progressive dosing elements, so each outlet receives an exact, repeatable quantity, while the air carries the oil to the tool or point. With a wide pressure range and standard connections, the mixing valve integrates readily into MQL set-ups and is part of DropsA's minimum quantity lubrication range.

How it works

Oil is delivered through progressive dosing elements that displace a defined volume on each stroke, and this metered oil is combined with compressed air in the valve. The mixture is then carried to the tool or lubrication point along a delivery line — for which a minimum length of 1 m is required so that a stable air-oil flow forms. Because the oil is metered volumetrically, the dose stays precise and repeatable regardless of small changes elsewhere in the system.

Your advantages

Combines metered oil with compressed air for MQLVolumetric metering via progressive dosing elements — exact, repeatable doseWide pressure range (2–100 bar)Standard 1/8" BSP or NPT connectionsIntegrates readily into air-oil and MQL set-ups

Technical data

Max. oil viscosity	230 cSt at 40 °C
Max. delivery per stroke	15 cm³
Max. continuous delivery	0.5 l/min
Pressure	min. 2 bar – max. 100 bar
Connections	1/8" BSP or 1/8" NPT
Metering	progressive dosing elements; min. delivery-line length 1 m

Datasheet: ▸ Mixing valve datasheet (PDF, EN)

Frequently asked questions about the mixing valve

What does the mixing valve do?

It combines a precisely metered quantity of oil with compressed air to form the air-oil mixture used in minimum quantity lubrication.

How is the oil metered?

By progressive dosing elements that displace a defined volume on each stroke, giving an exact, repeatable dose to each outlet.

What pressures does it handle?

From a minimum of 2 bar to a maximum of 100 bar, with oil up to 230 cSt at 40 °C.

Why is a minimum delivery-line length needed?

A minimum delivery line of 1 m allows a stable air-oil flow to form between the valve and the point.

What connections does it use?

Standard 1/8" BSP or 1/8" NPT connections.