Industrial Valves

SIET is specialized in certification tests, development and characterization of all sorts of valves for industrial plants, heating, conditioning and cooling systems. Tests are carried out with different types of fluids - water, steam, gas - and, in many cases, it is possible to simulate the real valve operating conditions (up to 500 °C, 20 MPa, 200 kg/s).

Types of valves

  • Isolation valves
  • Control valves
  • Check valves
  • Safety valves

Tests are carried out on valves with different design characteristics (globe valves, gate valves, ball valves, butterfly valves, etc.)

Dimensions: from DN8 (1/4") to DN500 (20")

Types of test

  • Measurements of the flow coefficient (CV, KV) and recovery factor (FL) in accordance with the CEI IEC 60534-2-3 standard
  • Determination of the characteristic curve (KV - travel) in accordance with the CEI IEC 60534-2-3 standard
  • Determination of the discharge coefficient (K) related to the lift (h) for liquid/gas safety valves in accordance with the EN ISO 4126-1 standard
  • Leakage test with water, gas, saturated and/or superheated steam and detection of any possible leak
  • Endurance tests (functional cycling) with saturated steam, water, gas
  • Structural tests by using strain gages
  • Vibration tests
  • Thermal shock tests
  • Cavitation tests by means of a specially designed innovative instrument
  • Axial compressive force test, axial tensile force test, bending test as per EN 488

Test conditions

Circuit for cold tests with water:

  • flow rate: 250 kg/s
  • differential pressure: 1.3 MPa

Circuit for high temperature and pressure tests with superheated steam:

  • temperature: 500 °C
  • pressure: 10 MPa
  • flow rate: 8 kg/s

Circuit for high flow rate hot tests with saturated steam and water:

Steam

  • flow rate: 40 kg/s
  • pressure: 7 MPa
  • temperature: 285 °C

Water

  • flow rate: 200 kg/s
  • pressure: 10 MPa
  • temperature: 300 °C