HERZ DRV – Double Regulating Valve Flanged Cast Iron PN16

Description

Presetting
1. Set the hand wheel to the desired position (Digital display on handwheel)
2. Red numbers are 1/10 of turn, blue numbers are a full turn.
3. The presetting spindle is beneath the cover. The spindle can be adjusted with an 8mm screwdriver. To preset turn anti clockwise up to stop. The valve is now able to close and open back to the preset position. Replace the cover on the handwheel.
4. The pre-setting marker is fastened as a tag above the valve or pipe. The setting of the respective valve is marked by cutting or breaking off the teeth at the figures for full and partial turns. This permit checking and/or restoration of the original pre-setting made on the occasion of system set-up after servicing without having to rely on documentation.
The setting of flowrate is achieved with a measuring device referring to the flow charts. Please see the operating instructions from the measuring device.

Minimum operating temperature – 10 °C
Maximum operating temperature 110 °C
Maximum operating pressure 16 bar