M

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A,  B,  C,  D,  E,  F,  G,  H,  I,  J,  K,  L,  M,  N,  O,  P,  Q,  R,  S,  T,  U,  V,  W,  X,  Y,  Z

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MAOP

MGO — Manual Gear Operator

MMCF

MO — Motor Operated

MSS — Manufacturers Standardization Society of the Valve and Fitting Industry

MWP – Maximum Working Pressure or CWP (Cold Working Pressure)

MAGNETIC PARTICLE INSPECTION

MALE THREAD

MATERIAL TEST REPORTS

MANIFOLD (HEADER}

METAL-TO—METAL SEAL

METER PROVER

METER RUN

MILL CERTIFICATES

MILL TESTS

MILL TEST REPORTS

MODULUS OF ELASTICITY (Coefficient of Elasticity)

MOLD

MONITORING — Monitor Service