test specimen

• control valves and shut-off valves
• air valves (air release, vacuum breaking)
• safety and pressure relief valves

applications

• flow capacity and pressure losses
• choking flow (gas expansion factor)
• noise (turbulence, choking flow)
• design optimization

features

• test fluid: air
• flow capacity:10 kg/s
• maximum diameter: 300 mm (12")
• length of test section:17 m
• line pressure: up to 12 bar

test procedures

Testing takes place according to international standards (ISA, ISO, IEC, EN, VDMA). The flow is supplied by a large air reservoir (capacity 70 m3), pressurized by a compressor. An active gas control valve allows for a constant pressure and flow in the test section. For a high accuracy over a wide flow range the main line or a bypass is available. The actual flow conditions are converted to standard conditions, according to the standards.

accuracy

• flow: within 2 % of measured value
• absolute pressure: within 0,25 % of measured value
• pressure difference: within 0,2 % of measured value
• temperature: better than 0,22 ^oK of the measured value
• sound pressure level: within 1 dB

more information

For more information contact Martin Boele.