Check Valves (Çek Vanalar)

TILTING TYPE CHECK VALVES

Tilting type check valves are generally used in pumping mains especially where minimal space is required. When the pump stops it automatically retain the water column and minimize the hammer effect.
Specifications
  • Diameter Range : DN100 - DN1800
  • Standards
    • Valve dimension : DIN 3202 F4
    • Flanges : DIN 2501 and DIN 2531
    • Hydraulic test : BS 6755
  • Damping Method
    • For tilting type : with counter weight or hydraulic damper
    • For slanted type : with internal damper
  • Operating Temperature : max. 60ºC
  • Operating Pressure : PN10 - PN16 - PN25
  • Test Pressure
    • Body : 1.5 times operating pressure
    • Seat : At operating pressure
  • Coating and Lining : Epoxy paint, suitable for drinking water

Valve Materials
  • Body : Ductile Cast Iron, GGG40 or 50, DIN1693
  • Disc : Ductile Cast Iron, GGG40 or 50, DIN1693
  • Seat : Stainless steel welded and grinded on body & disc, 316L & EPDM seal ring
  • Stems : Stainless steel, X20Cr13, BS 970 Part 431S29, ASTM A 582 420
  • Bearings : Bronze, GBzSn10
  • Coating & lining : Expoxy paint suitable for drinking water
Advantages of SMS Tilting Type Check Valves
  • Work with very low head losses and are maintenance free
  • Bearings are self lubricated and o-ring sealed.
  • Double eccentric arrangement of disc ensures complete sealing
  • Can be used horizontally or vertically
SWING TYPE CHECK VALVES
Swing type check valves are designed for installation on pumping mains to retain the water column automatically. Rubber lined disc or bronze rings, depending on the type of fluid carried, ensure the complete sealing.
 
DIN 3232 - DIN 3202 F6
  • Diameter Range : DN100 - DN1500
  • Flanges : DIN 2501, ISO 2531
  • Operating Pressure : 10 - 16 - 25 bars
  • Test Pressure : 1.5 times operating pressure

Valve Materials
  • Body : Ductile Cast Iron, GGG40 or 50
  • Disc: Ductile Cast Iron, GGG40 or 50
  • Body Seat : Bronze or EPDM seal ring
  • Disc Seat : Bronze
  • Stems : Stainless Steel, X20Cr13
  • Bearings :Bronze, GBzSn10
  • Coating & Lining : Exopy paint
Advantages of SMS Check Valves

  • Resistance to flow minimized by the smooth interior design

  • Possibility of reaching the valve body and changing disc without dislocating

  • Closes itself with the disc mass, possible to apply a counterweight against opening or closing

  • For damping, possible to apply single or double acting hydaulic or pneumatic cylinders

  • Can be used horizontally or vertically
NOZZLE TYPE CONICAL CHECK VALVES

Nozzle Type Conical Check Valves are being used to overcome the disadvantages of conventional check valves where smooth & silent operation is required.
 
  • Nominal diameter from DN200 to DN1400
  • Pressure class from PN6 to PN40
  • Flanges according to DIN 2501 / ISO 2531 / BS 4504
  • Face to face length according to DIN 3202 F4
Materials
  • Body Ductile Iron - GGG40 or 50
  • Disc ASTM A 304
  • Shaft Stainless steel
  • Spring AISI 316 (stainless steel)
  • Seat AISI 316L (stainless steel welding)

Advantages of SMS Nozzle Type Check Valves

  • High response to sudden flow changes, i.e., fast closure

  • Smooth and quiet operation due to correct positioning of the disc at every instant

  • Tight shut-off with perfect reliability due to metal to metal sealing avoiding any soft, i.e., weak components

  • Space economy due to attachment free compact design

  • Ability in vertical, horizontal and inclined positioning

  • Long service life due to shock less operation, self cleaning characterisitc and protected spring

  • and inner components.

  • Easy erection to new facilities or easy substitution to existing lines due to standard face to face dimensions.