Vexve DN 15, Инструкция по установке, эксплуатации, настройке и техническому обслуживанию

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Exceeding the permitted values shown on the valve may damage the valve and, in the worst case, lead to
an uncontrolled pressure discharge. This can damage the product and could also cause personal injury
and property damage. When the valve is closed, the maximum permitted testing pressure is 1.1xPN.
While the pipeline is being pressure-tested, (1.5xPN) the valve must be opened.
The desired Kv value can be pre-set for the valve:
· If the desired Kv value is known, the suitable valve size and pre-set value can be verified using Table 1.
· If the desired Kv value is not known, the suitable valve size and pre-set value can be determined using
pressure loss diagrams (pages 18–20) if the valve's flow rate and pressure loss are known.
4.3 Commissioning and pressure testing
4.4 Determining the pre-set value for the balancing valve
Table 1. Kv values for Vexve X balancing valves
Pre-set value DN 15 DN 20 DN 25 DN 32 DN 40 DN 50
1,0 - 0,04 0,19 0,22 0,48 0,71
1,5 0,04 0,07 0,35 0,41 0,6 1,29
2,0 0,06 0,12 0,56 0,61 0,82 2,09
2,5 0,11 0,20 0,77 0,85 1,29 3,10
3,0 0,18 0,30 1,10 1,21 1,84 4,02
3,5 0,25 0,45 1,41 1,67 2,47 5,11
4,0 0,33 0,63 1,80 2,17 3,29 6,48
4,5 0,45 0,83 2,29 2,68 4,19 8,20
5,0 0,59 1,02 2,86 3,46 5,44 10,43
5,5 0,72 1,51 3,60 4,50 7,05 13,01
6,0 0,90 2,10 4,63 5,89 9,09 16,25
6,5 1,13 2,72 5,62 7,35 11,45 20,39
7,0 1,42 3,52 6,77 9,14 13,99 24,53
7,5 1,70 4,39 8,35 11,01 17,09 29,30
8,0 2,04 5,40 9,96 12,85 20,24 34,13
8,5 2,32 6,66 11,76 15 22,78 37,10
9,0 2,61 8,18 13,75 17,29 25,14 39,73