Description
Types of Metering Valves
Chamber Metering Valve
Chamber metering valves are used for dot application of low to high viscosity media. Compared to the needle metering valve, they offer a larger range of shot sizes. Thanks to an innovative design that features a ‘snuff back‘ effect, these valves are characteristic for their high process stability and dripfree application when dispensing low-viscosity media.
The shot size is determined by the chamber volume, which can be adjusted within a predetermined range using a stop screw. The metering cycle is controlled either pneumatically or electrically via a solenoid valve. This valve series allows a highly repeatable metering of small quantities up to 100 ml within short cycle times. Manual application with a handle is just as possible as the integration into a fully automated process.

Features
- Dot application (volumetric metering)
- Shot size 0.05 – 100.00 ml (depending on model)
- Material input pressure 40 – 80 bar
- Compatible with stroke detection
- Snuff -back eff ect
Options
- Solenoid valve plate 24 V
- Signal generator with various cables
- Various adapters and needle tips
- Pneumatic or electric handle
Needle Metering Valves
Needle metering valves are suitable for dot application of low to high viscosity media. With this series, very small quantities of up to 3ml per shot can be discharged with high reproducibility and short cycle times. The valve consists of two structurally separate parts, meaning that material cannot leak into the drive cylinder and interfere with the movement of the valve needle. This feature makes the needle metering valve an exceptionally reliable and low-maintenance piece of metering equipment.
Shot size is determined by the volume of the valve chamber, which can be adjusted within a predetermined range using a stop screw. The metering cycle can be controlled either pneumatically or electrically via a solenoid valve. DOPAG needle metering valves are perfectly suitable for manual applications with a handle as well as for fully automated processes.

Features
- Dot application (volumetric dispensing)
- Shot size 0.001 – 3.00 ml (depending on model)
- Material input pressure 3 – 50 bar
- Compatible with stroke detection
- Sealing available in various sizes and material finishes
Options
- Solenoid valve plate 24 V
- Signal generator with various cables
- Various adapters and needle tips
- Micro-flow sensor
- Pneumatic or electric handle
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