According to API 6D, BS 1868, ASME B16.34, API 602, ISO 15761 – BS 5352
Check Valves
Check valve is a valve that normally allows fluid to flow through it in only one direction.
A check valve normally allows fluid to flow through it in only one direction. They are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem.
They are installed both onshore and offshore, in cryogenic and water treatment services, in oil & gas and power generation plants.
Design
Fire Safe tested API 6FA, API 607
Costruction Materials
Valvometal can manufacture valves with all types of material complying with ASTM & ASME standards and in accordance to customer needs and specifications (NACE standard included).
The main casted and forged materials used are:
BODY AND BONNET
Cast or forged carbon steel, low temperature carbon steel, alloy steel, stainless steel, exotic alloy, etc.
TRIM
Forged or pressed carbon steel, low temperature carbon steel, alloy steel, stainless steel, exotic alloys, etc.
Range of Production
PRESSURE SEAL
| ENDS | R.F. – R.T.J. – B.W. | |||||
| CLASS | – | – | – | 900 | 1500 | 2500 |
| NPS (up | to) | – | – | – | 16″ | 16″ | 16″ |
TILTING DISC CHECK
| ENDS | R.F. – R.T.J. – B.W. | |||||
| CLASS | 150 | 300 | 600 | 900 | 1500 | 2500 |
| NPS (up | to) | 36″ | 36″ | 36″ | 24″ | 20″ | 20″ |
BOLTED BONNET
| ENDS | R.F. – R.T.J. – B.W. – S.W. – NPT | ||
| CLASS | 900 | 1500 | 2500 |
| NPS (up | to) | 24″ | 24″ | 12″ |
DUAL PLATE CHECK
Design according to API 594
• Wafer, lug and flanged type
• Metal to metal and soft seal
| ENDS | R.F. – R.T.J. – B.W. | |||||
| CLASS | 150 | 300 | 600 | 900 | 1500 | 2500 |
| NPS (up | to) | 36″ | 32″ | 24″ | 20″ | 16″ | 12″ |
All sizes and ratings available on demand. Optional outside lever and counter-weight.