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”
Mounting at the pipeline:
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.
-
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.