Weld Check Valve
Weld Check Valve
Introduction of Weld Check Valve
There are two types of weld check valves – the socket weld and the butt weld.
A socket weld check valve has a recessed area where the pipe will be inserted. It does not require to be beveled, making installation and welding easier than the butt weld type. This type of check valve has less strength and is only used for small pipelines with sizes of NPS 2 and below.
Meanwhile, a butt weld check valve is a one-piece body that is welded at the end of the pipes. The end of the check valve must be beveled. This means that the valve and the pipes must have the same thickness. This type of check valve has excellent strength and is used to handle fatigue, corrosion, and severe temperatures. Because of its durability, a butt weld check valve is used in high-temperature and high-pressure pipelines.
Specifications
| Valve Size | 2″~24″, DN50–DN600 |
|---|---|
| Pressure Class | 150LB~900LB, PN10–PN150 |
| Materials | WCB, WC6, WC9, WCC, CF8, CF3, CF3M, CF8M, 4A, 5A |
| Design and Manufacturing Standards | BS 1868, DIN3840 |
| Face to Face Standards | ASME B16.10, DIN3202, BS EN558-1 |
| Flange Dimension Standards | ASME B 16.5, ASME B16.47, DIN2543, BS EN1092-1, DIN2544; |
| Pressure Test Standards | API598, DIN 3230, EN 12569 |
| Fire Safety Test Standards | API 607 |
| Quality/Product Certifications | ISO9001, ISO14001, ISO18001 |
| Fugitive Emissions | ISO 15848-1, API 622 |
| NACE | NACE MR 0103 NACE MR 0175 |
| Valve operator options | – |
| Shutoff Class | API 598 (Zero Leakage), API 6D |
| Bore | FULL BORE |
| Process Connection Types | RF, RTJ, BW |