Raw material quality is vital for valve quality, FORMEN VALVE sources casting and forging from the selected vendors. Before machining, we will take 4 steps to guarantee the material quality.
1. Visual test: visual test as per MSS SP-55, casting with obvious defects will be declined
2. Valve wall thickness test: random inspection on valve wall thickness by ultrasonic thickness meter, unqualified ones will be declined.
3.Chemical component analysis: random PMI test is performed to ensure qualification.
4.Dimension check: face-to-face, flange thickness will be checked before the process.
When the designs are approved by the customer, the production process starts. Our highly qualified staff works with high speed machines to produce your valves according to your specifications. After rough machining, 20% of valve component is checked dimensionally by Q.C inspectors; 100% after fine machining.
After the production process has finished, each and every single valve is tested in-house. Our valves have to endure a hydro-test on body and seat, followed by a low pressure air-test according to API 6D, API 598. Additional tests on valves and materials can also be arranged by FORMEN VALVE