Description
Soft sealing non-return valve with lever and weight plus adjustable hydraulic damper
Drinking, tap and wastewater up to 50°C
DN150 – 2000, PN10 – 16
Face-to-face length DIN EN 558-1, basic series 14 (DIN 3202, F4)
General information
- Double offset bearing of the disk in the body in maintenance-free bushes
- Medium-free bearing by triple O-ring seal and closed bearing lugs at the disc
- Wear-resistant, corrosion-resistant and infiltration-proof seat
- Anti-blowout shaft and shaft seal
- Hydraulic damper with two speed dashpot
- With lever and weight
- Tightness according to DIN EN 12266-1, leak-rate A
- Tight in both flow directions acc. to EN 1074-2
- Flange connection dimensions to EN 1092
- Body: ductile cast iron GGG40
- Disc: ductile cast iron GGG40
- Body seat: NiCr stainless steel welded overlay finish, micro finished
- Disc seal: EPDM
- Valve shaft: stainless steel 1.4021
- Bolts in contact with the medium: stainless steel 1.4301
- Shaft bearings: maintenance-free zinc-free bronze
- Certificate: EN 10204 3.1
Corrosion protection
- Inside and outside epoxy-coated, coating thickness >250 µm, blue RAL 5010
- Disc: epoxy coated
