IMP Armature>Non-return valves>Diaphragm non-return valve>Art. 442 MEVA

Art. 442 MEVA

DN 40–400
  • Quick and silent closing of the return flow
  • Wide range of application
  • Prevents water hammer
  • Optimum damping of pressure surges via pre-stressed, elastic diaphragm
  • No mechanically moving parts
  • Installation in all directions
data sheet PDF
operating & maintenance instructions
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Standards

Approvals

On demand

additions PDF

— Non-return valves manufactured and tested acc. to EN 1074-3 (water supply valves)
— Resilient seated acc. to EN 16767
— Flanges acc. to EN 1092-2 PN 10/16
— Installation length acc. to EN 558-1, series 48
— Final strength and tightness test acc. to EN 12266-1
— Corrosion protection acc. to DIN 30677-2 and EN 14901
— Sealing elements for drinking water acc. to EN 681
— Microbiological suitability acc. to EN 16421 (W270)

— UBA, W270, ACS WRAS, Belgaqua for EPDM sealing elements and Epoxy coating
— GSK – RAL-GZ 662/2 for corrosion protection
— EAC for the Russian market
— VIK for the Croatian market
— Conformity for potable water acc. to DM 174 for the Italian market

POSSIBLE ADDITIONS

— Bypass
— PN 6 flanges

SPARE PARTS SETS

— EPDM diaphragm

bypass 3/8”