Swing check valves

Designed to prevent medium return (back) flow at pipelines transporting liquid and gaseous mediums at the temperature up to +425°С.
NPS 2"-40" Class 150-400
Design Features: Closure sealing: metal-to-metal; • Corrosion-resistant overlaying of seats and disc sealing surfaces; • Thermo expanded graphite gaskets; • Disk is fixed at the rigid axle. 

Size range: 2” to 40”

Pressure Class: ANSI 150 to 400

Temperature range: up to +425 °C

Line medium flow: under disk.

Tightness:
 
  • DN150 – 5 cm3/min; 
  • DN200 – 7 cm3/min; 
  • DN300,400 – 25 cm3/min; 
  • DN500,600 – 45 cm3/min; 
  • DN800 – 80 cm3/min. 
Mounting at the pipeline: 
  • at horizontal pipelines: valve base downwards; 
  • at sloping pipelines (also in vertical position): inlet pipe downwards with disk pivot in horizontal position. 
Connection: welded, wafer type.

Materials: CS, LTCS upon Customer’s request. 

Actuation: medium flow. 

Service life: 30 years.