Metal Seat Wafer Check Valve
Check Valve is applicable for various pipelines with nominal pressure of PN1.0MPa~42.0 MPa,Class150~2500 and nominal diameter of DN15~1200mm,NPS1/2-48 and working temperature of -196~540℃ to be used for protecting from medium back flowing. The different materials selection can apply to the medium involving water, steam, oils, nitric acid, strong oxidizing medium and urea etc.
Design and Manufacture Stand: API 594
End to End Dimension Standard: API6D
Inspection and Test Standard: API 598
Flange End Dimension Standard: ANSI B16.5
The Advantages of Metal Seat
1.Long service Life
2.Strong adaptability to temperature
3.Resistance to wear
4.Good mechanical properties
The Advantages & Disadvantages of Soft Seat
1.Good sealing performance , zero leakage can be achieved .
2.Short service life
3.Poor adaptability to temperature
4.Easy to age and wear