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VP522A, B SEQUENCING WATER VALVE
Table 1. VP522A, B Operating Sequence on Control Air Pressure increase.
Specifications
See Table 2 for VP522 model number, size, capacity index,
and close-off rating.
3/8 in
1/2 & 3/4 in.
Hot port closes
Cold port open 100%
Cold port open 100%
Table 2. VP522 Specifications.
* Not available for replacement. Use valve with different nominal pipe size and
same capacity index.
pressure when used with VP522A. Combination is subject to maximum
differential pressure limits of VP522A.
psi (kPa)
Hot port open 100%
3 (21)
4 (28)
5 (34)
Hot port closes
Both ports closed
Cold port opens
13 (90)
Cold port open 100%
14 (97)
15 (103)
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