Armstrong International C4427-2, C4424-2 Installation guide

Armstrong International C4427-2, C4424-2 Installation guide
IB-10-C
Installation and Maintenance
For Y-Type Strainers
▲
Strainer Screen
▲
▲
Outlet
Retainer Gasket
▲
Screen Retainer
▲
▲
A strainer is a device which provides a
means of mechanically removing solids from a
flowing fluid or gas in a pipeline by utilizing a
perforated or mesh straining element.
Inlet
To ensure against untimely shutdown of
equipment, strainers should be installed ahead of
pumps, loading valves, control valves, meters, steam
traps, turbines, compressors, solenoid valves,
nozzles, pressure regulators, burners, unit heaters and
other sensitive equipment.
Threaded Connection
For Blowdown Valve
INSTALLATION
Clean all threaded areas of pipe thoroughly before
installing strainer. Use pipe dope or teflon tape sparingly. Leave the end thread exposed to avoid
introducing the sealant into the piping system. The strainer can be installed in the horizontal or vertical
down position.
CAUTION: When installing socket weld strainers 1-1/4" size and larger, and all D-Series strainers, be
aware the strainer has a non-metal gasket that can be damaged by excessive heat. Try to minimize
welding time, and cool the strainer after welding. If pre- and post-weld heating is needed (as for the
D-Series), removing the gasket may be advisable.
OPERATION AND MAINTENANCE
After the initial operation of the system, the strainer should be blown down to remove any
installation debris caught in the screen. Repeat the blowdown procedure on a regular schedule
thereafter. Frequency of blowdown depends on the operating conditions to which the strainer is
subjected. If no blowdown valve is to be used, the strainer can be cleaned by removing the screen
retainer and screen. CAUTION:ALWAYS ISOLATE THE STRAINER FROM THE PRESSURIZED SYSTEM
BEFORE OPENING TO CLEAN. USE A NEW GASKET WHEN REASSEMBLING THE STRAINER. The
strainer screen should be inspected one to two times per year. Recommended spare parts are one
screen and three gaskets per strainer.
ORDERING REPLACEMENT PARTS
To order replacement strainer screens, state connection size of strainer, screen material and type
of perforation or mesh. See screen specification chart. When ordering replacement screens for flanged
strainers, state flange rating.
To order replacement strainer gaskets or retainers, state type of connection (screwed, socket
weld, butt weld, or flanged), connection size and body material of strainer. Contact your Armstrong
Representative if further assistance is required.
How To Order
Armstrong Strainer
Replacement Screens and Gaskets
To order, specify strainer size, full details on connections and
screen specifications required, or use the ordering code provided.
Available Strainer Screen Materials
Materials
Particle
Retention (in)
Back-Up Screen
Required
304 SS
1/64"
0.016
3" - 10"
Code 10
Code 18
—
—
1/32"
0.031
None
Code 11
Code 19
—
Code 31
.045" (3/64)
0.045
None
Code 1
Code 3
Code 4
Code 7
1/16"
0.062
None
Code 12
Code 20
—
Code 32
Screen Specification
Perforated
Monel
Brass
316 SS
1/8"
0.125
None
Code 8
Code 21
Code 28
Code 33
3/16"
0.188
None
Code 13
Code 22
—
Code 34
Code 35
1/4"
0.25
None
Code 14
Code 23
—
20 x 20
0.034
*6" - 10"
Code 15
Code **5
—
—
24 x 110
0.0056
5" - 10"
—
Code 24
—
Code 2
Mesh
30 x 30
0.020
None
Code 41 (1)
—
—
—
40 x 40
0.015
1-1/2" - 10"
Code 16
Code 6
—
Code 37
100 x 100
0.0055
All Sizes
Code 9
Code 25
—
Code 38
200 x 200
0.0029
All Sizes
Code 17
—
—
Code 39
150 x 150
0.0041
All Sizes
Code 40
—
—
—
* Except 6" — 125 lb. cast iron.
** On Code 5 — 2-1/2" thru 10" require back-up screens
Shading indicates available screens for CA Series Strainers.
(1) 30 x 30 304 SS mesh screens only available for CA series strainers
Replacement Gaskets
Standard Replacement Gaskets for Strainers
Strainer
Size (in)
Cast Iron
"A"
Part No.
Carbon
Steel
Chrome
T-316
Moly
Bronze Stainless
Steel
Steel
"B"
"C"
"F"
"E"
Part No. Part No. Part No. Part No.
Strainer Repairs For
CA Cast Iron Strainers Only
Blowdown Plug
Retainer Gasket
Forged
Steel
Strainer
Size (in)
Part No.
Size (in)
Part No.
"D"
Part No.
1/2"
A6002A
3/8"
A19251
3/4"
A6003A
1/2"
A19251
A19252
3/8"
A4469
—
—
—
—
—
1"
A6003A
1/2"
1/2"
A4469
A4469
A4469
A6252A
A4469A
A6254
1-1/4"
A6003A
1/2"
A6256
3/4"
A4470
A4470
A4470
A6253A
A4470A
A6254
1-1/2"
A6003A
1/2"
A19253
A4471
2"
A6003A
1/2"
A19254
1"
A4471
A4471
A6255A
A4471A
A6254
1-1/4"
A6256
A6257A
A6258A A6256A
A6257A
A6259
1-1/2"
A6267B
A6262
A6258A A6267A
A6262
A6259
A6263
A6264
A6265A A6263A
A6264
A6259
2-1/2"
2"
A21274-1 A21274-1
—
—
A21274-1
—
3"
A21340-1 A21340-1
—
—
A21340-1
—
4"
A22106-1 A22106-1
—
—
A22106-1
—
5"
A21343-1 A21343-1
—
—
—
—
6"
A22049-1 A22049-1
—
—
—
—
8"
A21427-1 A21427-1
—
—
—
—
10"
A21432-1
—
—
—
—
—
K1SC, K1SW, N1SC and N1SW
Replacement Screen Assemblies
½"
.045 Perf. 304 Stainless Steel Screen Assy
C1823-2
¾"
.045 Perf. 304 Stainless Steel Screen Assy
C1823-4
1"
.045 Perf. 304 Stainless Steel Screen Assy
C1823-5
Armstrong Steam and Condensate Group, 816 Maple St., Three Rivers, MI 49093 Phone: (269) 273-1415 Fax: (269) 278-6555
www.armstrong-intl.com
8/03
Printed in U.S.A.
IB-10-C
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