Van Air Systems AHP High Pressure Alloy Filter Series IOM User Manual

FEBRUARY 2012

P/N 32-0313

REV A

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS

AHP SERIES

COMPRESSED AIR FILTERS

PRODUCT PURPOSE & FUNCTION:

Van Air's AHP series lters are designed to remove contaminants from compressed air systems. Available in 1/4" to 2" con-

nection sizes and ow capacities from 94 to 1882 scfm (at MWP @ 725 psig) in 8 housings and 9 ltration grades, the AHP series can
remove oil aerosols, oil vapors, water and particulates. Housings are made of cast aluminum and coated with black high temperature
paint for corrosion resistance. All units include push-on elements with durable polyester drain layer (except RD grade).

FLOW DIRECTION THROUGH ELEMENT

(COALESCING)

IN/OUT

(PARTICULATE)

OUT/IN

OPERATING CONDITIONS

MAXIMUM WORKING PRESSURE

All Models

OPERATING TEMPERATURE

Minimum

Maximum

MAXIMUM RECOMMENDED INLET TEM­PERATURE

AA, A, RAA, RA, RB, and RC Series
B Series
C Series
RD Series

725 PSIG

35°F

248°F

225°F
175°F
125°F

80°F

INLET

APPLICATION ELEMENT

OIL
REMOVAL
(LIQUIDS)

PARTICULATE
REMOVAL
(SOLIDS)

OIL VAPOR
REMOVAL

GRADE

AA

A

B

C

RAA

RA

RB

RC

RD

OUTLET

INLET

FILTRATION GRADES

PURPOSE NOMINAL

Extra Coarse
Coalescing

Coarse
Coalescing

General Purpose
Coalescing

High Efciency
Coalescing

Extra Coarse
Particulate

Coarse
Particulate

General Purpose
Particulate

High Efciency
Particulate

Vapor Absorbing

OUTLET

PARTICLE
REMOVAL

25.00 μ IN/OUT

5.00 μ IN/OUT

1.00 μ IN/OUT

0.01 μ IN/OUT

25.00 μ OUT/IN

5.00 μ OUT/IN

1.00 μ OUT/IN

0.01 μ OUT/IN

0.01 μ OUT/IN

ELEMENT FLOW

DIRECTION

WARNINGS

DO NOT REPLACE ANY ITEM ON FILTER WHILE IT IS PRESSURIZED.

•

DO NOT OPERATE A LEAKING FILTER. TAKE FILTER OUT OF SERVICE IMMEDIATELY.

•

DO NOT OPERATE ABOVE MAXIMUM WORKING PRESSURE (MWP) AT MAXIMUM OPERATING TEMPERATURE (°F).

•

PAGE 1

DIMENSIONS FOR:
AHP-25
AHP-40

FILTER HOUSING DIMENSIONS & WEIGHTS

DIMENSIONS FOR:
AHP-65
AHP-80
AHP-125
AHP-255
AHP-285
AHP-470

FILTER MODEL

FLOW**

(SCFM)

IN/OUT

CONN.

(NPT)

A B C D

HOUSING

WEIGHT

AHP-25-7.25-(*) 94 1/4" 2-1/2" 1/2" 6" 2" 0.5

AHP-40-7.25-(*) 147 3/8" 2-1/2" 1/2" 7-1/2" 2" 0.6

AHP-65-7.25-(*) 265 1/2" 4-1/2" 1-1/2" 12" 6" 5.7

AHP-80-7.25-(*) 324 3/4" 4-1/2" 1-1/2" 12" 6" 5.7

AHP-125-7.25-(*) 492 1" 4-1/2" 1-1/2" 15-1/2" 6" 7.3

AHP-255-7.25-(*) 1015 1-1/2" 5-3/4" 2" 21" 7" 16.5

AHP-285-7.25-(*) 1132 2" 5-3/4" 2" 21" 7" 16.5

AHP-470-7.25-(*) 1882 2" 5-3/4" 2" 25" 7" 22

*Insert appropriate ltration grade here; for example AHP-25-7.25-B. **Flow is based on SCFM @ 725 PSIG @ 100°F.

FLOW CORRECTION FACTORS FOR OTHER PRESSURES

OPERATING
PRESSURE

Correction Factor 0.25 0.51 0.57 0.66 0.77 0.82 0.87 0.92 0.98 1.00

100

PSIG

250

PSIG

300

PSIG

400

PSIG

500

PSIG

550

PSIG

600

PSIG

650

PSIG

700

PSIG

INSTALLATION

1. Before installing lter, check operating temperature and
pressure conditions to verify that they are within the specied
ranges. (See Operating Conditions on page 1). Also verify
that system ow rate corresponds to the rated capacity of
the lter. Operating at ows above rated capacity will result
in increased pressure drop.

2. Locate Filter at the point of lowest operating temperature to
ensure that water and oil vapor do not condense downstream
of the lter. Filter should be installed close to the point of
use to minimize the risk of pipe scale, dirt, etc. recontaminat­ing the compressed air. This is particularly important when
installing a new lter on an existing system that has not had
proper ltration.

3. Protect lter from reverse ow conditions. Do not install lter
downstream of quick opening valves.

4. Install lter vertically. Provide required minimum clearance
below lter to allow for replacement of element.

(See Element Removal Clearance on page 2).

5. Remove lter head from the bowl by turning bowl counter­clockwise. Pull element from lter head. Set bowl and
element aside for use later.

PAGE 2

6. Install inlet and outlet shutoff valves to facilitate replace­ment of element. Bypass piping is recommended. (See Fig-

ure 1A). MAKE SURE VALVES ARE CLOSED BEFORE
PROCEEDING.

7. Depressurize piping and connect lter head into piping. Avoid
reducers or bushings to match inlet size. The resulting restric­tion will increase pressure drop. Make sure head is installed
with ow arrows pointing in proper direction. Use pipe thread
compound as required.

If multiple lters are being installed in series, use pipe nipples
to connect lters, do not attempt to bolt lters together.

8. Install element by pushing into lter head.

IMPORTANT

INSTALL FILTER HEAD WITH ARROWS POINTING
IN THE PROPER DIRECTION TO ENSURE PROPER
OPERATION. (SEE FIGURE 1A).

(LBS)

725

PSIG