Quality System

If specified by the purchaser, for different purposes, to verify valve properties and performances, to verify material chemical composition or mechanical properties, to qualify  valves to special working conditions or to long working life, many different tests can be performed as below:

VALVE TESTS

• Pressure test at high/low temperatures
• Low e High pressure seat gas test in accordanc with Annex C of API 6D
• On customer request, pressure tests can be performed in accordance with other standards like API 598 and EN 12266-1
• Anti static test
• Torque test. Torque value is verified during this test as well.
• Functional valve test or functional valve and actuator test.
• Fugitive emission test to ISO 15848 or to other standards
• Paint dry film thickness check
• Insulating coat testing by holiday detector ISOLTEST HD93  Foto3:rilevatore di discontinuità
• Cavity relief test
• Cryogenic test down to minus 196 °C 
• Strain gauge test  

All tests performed by qualified personnel, certified in accordance with EN 473 or SNT-TC-1A

• Radiographic examination (RT), X-Ray or Gamma-ray
• Magnetic particle examination (MT)
• Ultrasonic examination (UT)
• Dye penetrant examination (DP)
• Positive material identification (PMI)
• Hardness test

DESTRUCTIVE MATERIAL TESTS

• Mechanical tests, hardness test and Impact test down to – 196°C
• Chemical analisys of carbon, stainless steels, duplex, superduplex and high alloys using spectrometer
• Corrosion tests (e.g. Pitting, SSCC, Huey, Crevice)
• Micro examinations by electronic microscope up to x500 magnifications
• Ferrite check to E562
• Hydrogen-inducted cracking test
• Pull-off test for paint adhesion check

QUALIFICATION TESTS

• Fire tests according 
• Fugitive emission tests to ISO 15848
• High pressure gas tests
• High and low temperature tests
• Delayed torque tests
• Cycle operational and pressure tests