4
C. Piping
1. Before installing, blow out pipe line to remove scale
and other foreign matter.
2. This unit has DRYSEAL pipe threads; use pipe com
-
pound or tape sparingly to male threads only.
3. Mounting (Grades A, B, C, D, E, F) - mount so that
inlet and outlet connections are horizontal (filter bowl
vertical) to ensure proper liquid drainage.
4. Flow Direction - install so that the air flow is in the
direction of arrows on the filter head.
NOTE: Grade D flows from outside to inside of
element. All other grades flow from inside to outside
of element. Observe flow arrows on cap.
5. Direct filter-to-filter (modular) connection - Filter
heads may be joined without using a pipe nipple
a. Bayonet type heads - Use two (2) modular
connectors, o-ring, and four (4) socket head cap
screws (sold as kit).
Remove black plastic top cap, apply generous
amount of lubricant to o-ring, install o-ring in
groove, and insert connectors. Screw connectors
to head using socket head cap screws.
b. Threaded heads
Use four carriage bolts, nuts and o-ring (sold
as kit). Remove black plastic top caps, apply
generous amount of lubricant to o-ring, install
o-ring in groove, and install bolts and nuts.
NOTE: Make certain flow direction through filters is
correct (observe pin hole used for aligning top caps).
Grades A, B, C, E, F, G - when hole is on side closest to
you, inlet is to left. Grade D - when hole is on the side
farther from you, inlet is to left.
NOTE: Lubricate o-ring with generous amount of
lubricant before installation.
6. Isolation valves and by-pass piping - For ease of
service, isolation and by-pass valves are desirable. In
critical applications, two filters installed in parallel may
be necessary to avoid interruption of air supply.
D. Drain provisions
1. Internal Automatic Drains - Drain line
The bottom of internal automatic drains are provided
with 1/8" (inside threads) for connection of a drain
line if desired.
2. External Auto Drains - External auto drains may be
added as follows:
Models 12 through 20 - remove internal drain and
install adapter (available from factory). Adapter outlet
connection is 1/8" (inside threads).
Discharge is at system pressure; anchor
drain line.
Models 22 through 30 - Remove adapter fitting from
bottom of bowl; 1/2" (inside threads) port is available
for external drain connection.
