VALVE

HYDRO TEST
HYDRO TEST
HYDRO TEST
HYDRO TEST
HYDRO TEST
HYDRO TEST
PAINTING THICKNESS
PLUG SEAT THIGHTNESS
PNEUMATICAL TEST
RETAINING PART TIGHT
VALVE & ACTUATOR
VALVE CHANGE GASKET
VALVE CHANGE GASKET
VALVECLEANING DRYING
VALVE 30\'
VALVE LOADING

Visual inspection valve

Marking, traceability

Quality, workmanship & finish

Leakage, temperature

Assembly of valves

Flange end protection

Surface preparation & painting
Cleaning & rust prevention

Packing

NDT: Dye penetrant, PAMI

Assembling operations (Gaskets, bonnet, actuator)

Functional Tests/Examination valve

Hydrostatic test (shell, seat, backseat) API 598

Low & high pressure water test seal API 598

NDT (PT, RT, radiography ) ASME B 16 34, E 446, ASME V & VIII

Hysteresis, Stroking time, Dead band

Fugitive Emission Standard ISO 15848-1

Test bench Low & High temperature
Pressurize with helium
Measure leakage: Stem seal Body seal
Mechanical cycles

PMI

Rockwell Hardness test

Dimensional controls