END ARMATUREN DF3D, Оригинальное руководство по эксплуатации

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DG - 10/2019 http://www.end.de 17
Description of Function
Fig. 4.8 - Description of function: mixing function
© END-Armaturen GmbH & Co. KG
A P
1
P
2
A P
1
P
2
Mischfunktion
A
P
1
P
2
4.5.2.2 Mixing function
At this function the valve valve will be pressurized by two ports (P1/P2). In case of the position of
the piston flows from one of the two inlet ports to the outlet port. (P1 ► A / P2 ► A)
4.5.2 Description of function: Pressure actuated valve (3/2-way)
A straight seat in the valve body will be closed with or against the flow direction by a valve disk.
The valve disk is connected with the piston by a stem. It`s dynamical sealing and guidance hap-
pens by a screw joint between valve body and pilot cylinder. The 3/2-way pressure actuated valve
renders two functions: 1. split function
2. mixing function
Pressure actuated valves would be actuated wit a piston by a neutral pilot media (air, water, oil).
It works in a pressure range from 0 bar up to the max. nominal pressure which you can see in the
pressure table. The flow direction is fixed and signed on the valve.
4.5.2.1 Split function
At this function the valve will be pressurized by the inlet port P. In case of the position of the piston
the medium flows from the inlet port to one of the outlet ports. (P ► A / P ► B)
Fig. 4.7 - Description of function: split function
P B
A
P B
A
Aufteilfunktion
B A
P
split-function
mixing-function