Inoculation sites

Inoculation of the conveyed chemical

The injection point is a fitting with which the dosing medium is introduced into a pressurised system. A non-return valve with a spring-loaded ball (type R) or a valve hose (type S) ensures that no process medium can flow backwards to the dosing pump during normal dosing operation and during process-related downtimes. Injection points should be equipped with a shut-off valve if possible. This allows the dosing system, including the non-return valve, to be disconnected from the pressurised system, e.g. for maintenance. In addition, the shut-off valve should be closed during longer downtimes because the tightness of the non-return valve could be impaired by contamination or wear.

Features & advantages

Flow rate 70 - 2600 l/h
Opening pressure 0.2 - 1.1 bar
System pressure PN10 or PN16 (special versions up to PN160)
Type S: Pre-tensioned hose ensures extremely fine spraying of the chemical during the dosing stroke
Type SAH: Dismantling of the injection tube possible under system pressure
Type SKD: Self-cleaning due to constantly moving injection tube in the main flow
The injection tube allows the dosing chemical to be injected into the centre of the pipeline and ensures good mixing
the non-return function (type R and type S) prevents liquid from running backwards from the pressurised system to the dosing pump
a shut-off valve makes it possible to separate the dosing system from the pressurised system and provides a safe shut-off during longer downtimes
a cooling pipe is used to dissipate heat when dosing into systems with high temperatures, but the dosing line is made of plastic
Various transitions from the injection point to the dosing line are possible, e.g. to a hose, to a rigid line or via a flange