AirCom DB110 Gebruiksaanwijzing - Pagina 2

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If devices are connected to the pressure limiting valve, the setting of the pressure limiting valve needs to ensure that

no dangerous pressure can build up. The medium discharging from the outlet of the pressure limiting valve has to be

carried away in a defined manner.

When changing the type of gas, the pressure limiting valve should be purged sufficiently with inert gas.

3.2 Regulations and guidelines

The following regulations and guidelines must be observed in Germany on a case-by-case

basis:

Standards of prevention

Operating working materials

Guidelines for laboratories

Ordinance on Industrial Safety and Health

Data sheet "Dangerous substances"

4. Installation

4.1 Transport and packaging

When the pressure limiting valves are delivered, please check for possible transport damage or defects. The

connection openings of the pressure limiting valves may be closed for transport by caps to prevent dirt particles from

entering. Do not remove the caps until just before installation. In case of a later disassembly, the connection

openings need to be closed again before being put into storage or being transported. This can also be done

provisionally by a strip of adhesive tape that is taped over the opening.

The transport of the pressure limiting valve (e.g. sending to customer service) may be done only in a suitable sturdy

package.

4.2 Preparation

• Turn the adjusting screw (hand wheel, spindle, hexagon) on the pressure limiting valve anticlockwise until the

range spring is completely relaxed.

• Connect pressure limiting valve – connection threads have to match.

• To ensure the pressure limiting valve is in perfect working condition, all lines needs to be purged prior to

installation. Deposits and other foreign objects can cause damage to the valve seat, and thus interfere with the

regulating function or make it impossible. No lubricants may be used during installation. The pressure limiting valve

may soil and there is a risk of burning out if oxygen or nitrous oxide is used.

DB110 Pressure limiting valve

The pressure limiting valve has to be installed in the line in such a way that the medium flows in the direction of the

arrows stamped/adhered onto the housing (IN to OUT). Internal filters are only for the protection against possible

soiling during the installation. It is recommended to use external input pressure filters. All gaseous media should be

free of moisture to prevent icing of the pressure limiting valve at high flow rates.

4.3 Operating

The desired upstream pressure is set by turning the adjusting screw (hand wheel, spindle, hexagon). Turning

clockwise increases the upstream pressure, turning anticlockwise reduces the upstream pressure.

The general function of a pressure limiting valve is described in the following film.

Animation film pressure limiter

Fine adjustments should always be made in the direction of upstream pressure increase in order to reach the

precise setting point. These pressure limiting valves function with all media that are compatible with the specified

materials.

Dok-Nr.: BA-DB110

DB110 Back pressure regulator made of aluminium

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Created on 2023-06-13