Valve Test

1. Fire Safe Test : API 607, API 6FA, BS6755 Part II a) External leakage prevention All the possible external leakage point betwenn stem and gland flange, gland flange and body, body and adapter are sealed with primary O-ring then secondary graphite gasket.

When fire burned out the primary O-ring sean, the secondary graphite gasket seal still can prevent the process medium from external leakage. b) Internal leakage prevention Ball Valve is features with metal to metal seal in case the nonmetalli...