7 malfunctions, 8 maintenance, 1 dismantling bva/f, bvap/f with ball/stem unit – Richter BVAP/F Series Ball Valves (ASME) User Manual
Page 11: 1 bva/f with lever, 2 bvap/f with actuator, Unit, Bva/f with lever, Assembly bva/f, bvap/f with ball/stem unit, Packing insert, 7malfunctions
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