Maintenance-free soft-seated wafer butterfly valve with centring lugs, face-to-face length (DIN 3202 T3, series K1) DIN EN 558-1, basic series 20, body made of cast iron EN-JS1030 (short designation: EN-GJS-400-15, eh. GGG-40), with primer coat, EPDM, NBR or VITON sealing sleeve, from -10 degrees C to +130 degrees C, (depending on gasket selection) disc made of stainless steel 1.4581 for shut-off and throttling, double sealing of the damper stem with profile ring and dew point lock, centric disc bearing, fully isolatable according to the Energy Saving Ordinance - EnEV, CE certification according to the Pressure Equipment Directive for fluids of groups 1 and 2. With drilled stem for optional temperature measurement with THEA (THErmo display).
For cold, warm, hot, water and drinking water ...
Ductile iron GGG 40; EN-JS1030 (0.7040)
Stainless steel disc 1.4581 (alternatively: Slice of EN-JS1030 with zinc flake coating)
Optional EPDM, NBR or FPM Viton
EPDM -10º C to +130º C
NBR -10º C to +80º C
FPM Viton -10º C to +150º C; (FPM Viton: not for hot water usable)
for mounting between flanges according to DIN.
Operating with worm gear
DN25 - DN500
With DIN DVGW registration DW 6201BR0244, according to DIN EN 1074-1 / -2 including disinfection test, DVGW VP646 and DVGW W270 for potable water. (In the variant EPDM collar and Noble steel disc 1.4581)
Also available in seawater version.
Optional versions are possible.