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PIPING COMPONENTS (cont)
SYMBOL/SKETCH DESCRIPTION
C
V
FACTOR RATING
STEAM
USE
1
⁄
2
3
⁄
4
PSI F
STRAINER: Y-type body with
50 mesh stainless steel screen.
Application - Used for removal of small
particles from system water during
normal system operation. Should not
be used in lieu of main system
strainers. Strainer screen may have to
be removed during initial high pressure
system flushing during start-up.
Screen should be removed and cleaned
per normal maintenance schedule
(provisions for strainer blow-down
not provided).
9.0
Clean
19.0
Clean
400 250 N/A
GATE VALVE: Manual shut-off valve.
Application - Used for unit isolation
during system flushing, servicing, etc.
Do not use for water balancing.
19.8 36.0 200 200 NO
GLOBE VALVE: Standard pattern,
manual shut-off and throttling valve.
Application - Used for unit isolation.
Not recommended for high flow rates
due to relatively high pressure drop.
1.8 3.9 200 200 NO
COMPRESSION STOP VALVE:
Manual shut-off valve.
Application - Used for unit isolation
during system flushing, servicing, etc.
Not recommended for high flow rates
due to relatively high pressure drop.
2.3 5.4 150 200 NO
BALL VALVE: Manual balance and
shut-off valve.
Application - Used for unit isolation
and water flow balancing. Without
memory stop feature water balance
point must be marked by installer (if
necessary). Check specifications for
service fittings required when used for
water balancing.
4.0 7.5 400 200 YES
BALL VALVE WITH MEMORY STOP:
Manual balance and shut-off valve.
Application - Used for unit isolation
and water flow balancing. The adjust-
able memory stop feature allows return
to the balance point after shut-off.
Check specifications for service
fittings required when used for
water balancing.
4.0 7.5 400 200 N/A
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