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Valves0 pages
Valves
Accessories
Pressure compensation valves are used to offset the variations of slow
pressures and of low amplitude (air pressure variations, hygrometry or
temperature variations). They are not designed to absorb sudden or exceptional
variations.
Important variations can take place :
• when the enclosure is rst put into service or when the cold is
The best location for
restarted After prolonged opening of doors
valves is where pressure
• on defrosting
variation are the Most
• at cold restart after defrosting
Variations such as those create a shock wave likely to bring
regular. It is advisable to
about damage even so far as to cause the collapse of walls
move them away from
or ceiling.
fans and angles.
Those phenomena are induced by the running and/or design of
refrigerating facilities. It is incumbent on the customer to take
appropriate measures to reduce those risks. The conditions for the commissioning of cold rooms
equipped with valves must comply with instructions set out in DTU 45.1 NFP 75-401-1.
TS 20 valves for small cell :
• average debit : 8 m3/h,
• power : 8 W under 230 V,
• mounting only on vertical panel of maximum thickness 130 mm
TS 22 and TS 22+ valves airtight, in waterproof lids :
• average debit : 15 m3/h,
• power : 16 W under 230 V,
• TS 22 is mounted on vertical and ceiling panel of thickness 60 to 120 mm
• TS 22+ is mounted on vertical panel of thickness 150 mm
• Threshold of release 20 Pa
TS 25 watertight valves with heating cane anti-icing :
• average debit : 30 m3/h,
• heating strip power : 40 W under 230 V,
• mounting only on vertical panel of maximum thickness 220 mm
• Threshold of release 100 Pa
This valve can be transformed into type TS 25 P by a simple modication
(transfer of spring blades) to mount it in the ceiling.
TS20
Thickness of panel in mm
3
TS22
TS22+
TS25
70 to 130
60 to 120
150
maxi 220
Average debit in m /h
8
15
15
30
Treshold of release in Pa
0
20
20
100
1
Volume in m3
until 20
1
1
1
from 20 to 50
1
1
1
from 50 to 100
2
2
1
most economic solution
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