1187151 Brass Air Relief Valve for FMC Bean Mud Pumps Precision-cast from ASTM B584 CuZn39Pb2 brass with CNC machining (Ra≤0.8μm), API 7K certified, pressure resistance ≥3500psi. 100% helium leak tested, 40% enhanced corrosion resistance for L11/L16/W11 power ends. Complies with ISO 4200 dimensional standards.
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