Wafer check valve DV500
• Without spring or with stainless steel spring. AISI 316 / HASTELLOY
• Diameters from DN40 to DN600
• PVC, C-PVC, PP and PVDF materials
• EPDM, FPM, PTFE gaskets
• Connections between DIN or ANSI wafer type flanges
• Special flange holder to open the clapper
Advantage
• Resistant to corrosion
• Easy assembly as construction between flanges
• The centering of the flap is made by the diameter of the housing
• Housing with O-ring, no fittings are needed for additional flanges
• Maintenance-free construction that needs little space
• For vertical or horizontal mounting position
Version
• Check valve without return spring for the vertical pipe guide.
• Check valve with return spring for horizontal pipe guidance. Accessory springs. We also recommend these for the pulse pulsating flow regime.
Use
• To regulate a prescribed direction of passage – reflux inhibitor
Fluids
• Neutral media and aggressive liquid or gaseous media if the valve components that contact the media are resistant to the service temperature according to the Divatec resistance list.
• Contaminated media can reduce the closing function.
More Specifications
Nominal Pressure (H2O, 20°C)
• PN 5 – PN 8
Closing pressure
• Absolutely hermetic to 0.3 bar
• Absolutely hermetic to 0.3 bar
• see table
Medium temperature
• see pressure and temperature diagram
Service pressure
• See pressure and temperature diagram
Construction Size
• DN 40 – DN 200
Body
• PVC-U
• PP
• PVDF
Closing disc
• PVC-U
• PP
• PVDF
O-rings
• FPM
• PTFE
• EPDM
Connection
• On the exit side with the easy-to-mount ASV exit aids
• On the input side with edged sleeves or welding collars according to DIN ISO with smooth sealing surfaces
Indication
• The valve disc plate must rest on the inner wall of the union fitting before reaching the maximum opening angle. because otherwise it breaks.
Mounting position
• Vertical or horizontal, observe the direction of the arrow on the valve housing flapper box
Flow direction
• Always in the direction of the arrow
Option
• Exit help
Accesories
• Stainless steel spring (1.4571) or Hastelloy (C4)
Color
• Body: PVC-U, grey, RAL 7011
• Body: PP, grey, RAL 7032
• Body: PVDF, yellowish white
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