VDV – Volumetric Dosing Valve

The SOMA volumetric dosing valve – VDV was developed for use in dosing processes exact repetition and contact-based dosing of precise volumes is the primary objective, regardless of fluctuations in feed pressure and the viscosity of the lubricant being dispensed.

The VDV is a modular valve in the shape of a cartridge, designed to dose low- to high-viscosity media. It can be used with a large range of lubricants, including solid lubricants. Interchangeable valve housings mean the VDV can also be connected to form a dosing station with central medium supply.

The benefits at a glance

• Continuously adjustable, reproducible, constant dosing volume
• High process reliability
• Low primary medium pressure to prevent lubricant separation
• Option for dosing solid lubricants
• Can be connected to form a dosing station with central medium supply

A delivery pressure of 3 - 6 bar feeds the medium to be dosed to the dosing chamber via the valve connection block. A dynamic pressure relieved non-return poppet valve built into the outlet of the VDV dosing chamber prevents the uncontrolled release of the dispensing medium up to a pressure of 6 bar. Dosing volumes can be manually adjusted on a continuous basis via the rotary valve cylinder, which restricts the stroke of the dosing piston.

Triggered by a mono-stable 3/2-way valve, the dosing piston in the valve cartridge is pressurised, thus forcing the spring loaded plunger into the dosing chamber without any clearance.