Slanted check valve, type 4020

Type 4020 check valve is a double flanged double eccentric valve with slanted seat for supporting fast opening and closing time. Full tightness is achieved with an elastomer-to-metal design. No lever and counterweight is needed. The valve can be used in water distribution and water treatment applications, in power plants and in several other industries.

Category:

Soft sealing non-return valve with slanted seat to DIN EN 12334
Drinking, tap and wastewater up to 50°C
DN200 – 1200, PN10 – 16
Face-to-face length DIN EN 558-1, basic series 14 (DIN 3202, serie F4)

General information

  • Disc geometry with optimum hydraulic flow pattern to ensure low pressure losses
  • Wear-resistant, corrosion-resistant and infiltration-proof sealing seat in the body
  • Seat in the body with micro finished NiCr stainless steel welded overlay
  • Reduced closing and opening time due to slanted seat
  • Flange connection dimensions to EN 1092
  • Body: ductile cast iron GGG40
  • Disc: ductile cast iron GGG40
  • Valve shaft: stainless steel grade 1.4021
  • Shaft bearings: bronze
  • Certificate EN10204 3.1

Corrosion protection

  • Body: inside and outside epoxy coated, coating thickness >250 µm, blue RAL 5010
  • Disc: epoxy coated

Additional information

DN/NPS

Operating pressure

PN10, PN16

Flange connection

,

Top flange

Marking

EN 19

Face to face length

EN 558-1/14

Test standard

EN 12266-1

Application

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Datasheets (PDF)

Type 4020 slanted check valve datasheet
Type 4020 slanted check valve manual
Type 4020 slanted check valve tender text