Diaphragm valve to DIN/EN with flanged ends, straight-way pattern, for drinking water installations to DIN 1988, DIN-DVGW-approved for water acc. to test W 270, in compliance with the latest elastomers guideline of the German Environment Agency; shut-off and sealing to atmosphere by confined and supported SISTOMaXX diaphragm; position indicator with integrated stem protection. All moving parts are separated from the fluid by the diaphragm. Maintenance-free.
Technical Data
Function Shut off/control flow
Connection type Flange
Design concept Drive With handwheel
Casing material
EN-GJL-250
GX2CRNIMO19-11-2
Nominal pressure PN 16
Max. nominal size DN 200
Min. nominal size DN 15
Max. allowed fluid temperature 90 °C
Min. allowed fluid temperature -10 °C
Benefits
eliable sealing ensured by one single sealing element (the diaphragm), which provides hermetic sealing to atmosphere and absolutely tight shut-off. The specially enclosed diaphragm ensures long service life and high operating reliability.
Increased functional reliability of the diaphragm thanks to balanced diaphragm suspension
Maintenance-free as all moving parts are separated from the fluid by the diaphragm.
High level of reliability as the thrust bearing minimises the closing torques required.
Optimised long-term operation as the position indicator with integrated stem protection prevents the ingress of contaminants.
High level of reliability as the valve hydraulics without dead volume ensure optimum conditions for high-purity fluids.
Long service life as the diaphragm support increases valve life and extends the pressure limit of the diaphragm.
Both the SISTOMaXX diaphragm material and the body material 1.4409 and coating material polyamide (Rilsan) meet the recommendations of the German Environment Agency (Elastomer Guideline) and DVGW Worksheet W270.
