Flowmetering Gilflo and ILVA flowmeters 3
Installation points to watch 1. Ensure that all pipework is adequately supported and properly aligned. Special care should be taken to ensure that the Gilflo ILVA pipeline unit is concentrically mounted in the line.
2. The Gilflo ILVA pipeline unit should be selected on capacity rather than line size. Where line size changes on steam systems are necessary, use eccentric reducers to avoid build-up of condensate.
3. The minimum recommended lengths of straight pipe upstream and downstream are 6 D and 3 D respectively. See other literature for more details concerning the Gilflo ILVA.
4. Take care to ensure the correct direction of flow as indicated by the arrow on the flowmeter body.
5. Take care to avoid reverse flow through the flowmeter.
6. Avoid installing the flowmeter downstream of a pressure reducing valve (especially on steam systems) as this may cause inaccurate readings. Similarly, avoid installing the flowmeter downstream of a partially open valve.
7. Remember that actuated valves may cause rapid pressure fluctuations which could cause damage.
8. On steam or liquid systems, the M610 DP transmitter assembly is mounted below the flowmeter. Take care to ensure that all impulse lines remain full to prevent damage to the DP transmitter through contact with steam or high temperature liquid.
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9. For steam applications, care should be taken to ensure adequate line drainage, trapping etc., to avoid condensate slugs impacting the flowmeter. Where practicable, steam separators should be fitted. These should be drained using a float trap set.
10. For gas applications, the M610 DP transmitter assembly is installed above the pipework. Ensure that the impulse lines allow free drainage of moisture away from the DP transmitter and back into the pipeline.
TI-P337-06 MI Issue 7
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Gilflo ILVA Flowmeters System Overview
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