Pressure Sealing Butt Welded Swing Check Valve
Swing check valve is mounted at the outlet side of the pump to stop
backflow, start pump under-loading, eliminate pressure surge etc.
It works to protect pump station, equipment and pipeline in the
system.
This model is popularly used in industry of metal refining,
petrochemical, oil, city construction, environment protection,
water conservancy project.
Product features
1, Smooth running without vibration and noise.
2, The valve is tightly sealed without leakage under the pressure
water test.
3, Outstanding open and close capacity. Opening pressure≤0.08Mpa;
Quick open and adjustable close speed. Closing movement includes
two steps, first rapid closing step, and second slow closing step.
The second slow closing speed is adjustable according to the
specific condition.
Materials
WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, CF8M, etc.
Standard
Design to API 6D
Face to face per ANSI B 16.10
BW ends dimension ANSI B 16.25
Flange ends dimension ANSI B 16.5/ANSI B 16.47
Final inspection tests to API598.
Wall thickness dimension:API 600
Metal seal or rubber seal.
DN50-DN1500, class150-2500
Valve description:
Name: Pressure Seal Bonnet (PSB) Swing Check Valve.
Design: ASME B16.34.
Body: ASTM A217 WC9.
Nominal size: 16 Inch.
Nominal class: Class 2500.
Connection ends: butt welded ends.
Face to face: as per ASME B16.10-short length.
Test and inspection: API 598.
Technical parameters and characteristics
| Product | Pressure Seal Bonnet Swing Check Valve |
| Nominal diameter | NPS 2” ～ 30” | DN50 ～ DN750 |
| Design temp. | -196℃ ～ 593℃ |
| Design pressure | class 900 ～ 2500 | PN 160 ～ PN420 |
| Material | A216 WCB, WCC, A217 WC6, WC9, C5, C12A, A352 LCB, LCC,
A351 CF8, CF8M, CF3M, CF8C, CN3MN, CK3MCUN, CN7M,
A890 4A(CD3MN), 5A(CE3MN), 6A(CD3MWCuN),
ASTM B 148 C95800, C95500 |
| Design standard | ASME B16.34 | DIN 3352 |
| Face to Face | ASME B16.10 | EN558 series |
| Connection end | RFF, RTJ, BW | EN1092 series |
| Test standard | API 598, ISO 5208 | EN12266-1 |
| Operation | NO |
| Application | electric power, petroleum refining, petrochemical engineering,
offshore oil, chemical engineering |
| Function 1 | Pressure Seal Bonnet
The bonnet gasket to be metal sealing, RTJ ring - SS 304 for a long
service |
| Function 2 | Design as per ASME B16.34 |
| Function 3 | Inside of shaft/ outside of shaft |
| Function 4 | Outside of shaft: could be mounted lever + counterweight + damper |
| Function 5 | Large size of check valve could be mounted hydraulic damping
cylinder |
