Check valve according to the structure, can be divided into lift check valve, swing check valve and butterfly check valve three:
1. Lift check valve is divided into two kinds of vertical and horizontal.
2. Swing check valve is divided into a single type, double valve and valve type three.
3. Butterfly check valve is straight through.
More than three kinds of check valve in the form of connection can be divided into threaded connection, flange connection, welding connection and clip connection.
1. Nominal Diameter: DN50 - DN1500
2. Pressure Range: PN16 - PN420
3. Working Temperature: -196℃ - 560℃
4. Body material: Carbon steel, Stainless steel, Alloy steel, Bronze, etc
5. Operation: Handwheel, Electric, Pneumatic
1. Design & Manufacture: API 598, API 6D
2. Face to Face: API 594, API 6D, DIN 3202
3. Flange End: ASME B 16.47, ANSI B 16.5
4. Inspection and Test: API 598
5. Special: NACE MR-01-75
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