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Duplex Strainer Selection Chart


  click on styles highlighted below for submittal drawings (41-52k PDF files)
DUPLEX BASKET STRAINERS
STYLE
Screwed (NPT)  3/4" to 2-1/2"
DPXS WDPXS CDPXS BDPXS SDPXS SSDPXS
STYLE
Flanged (ANSI)  1" to 8"
DPXF
125 lb.
WDPXF
125 lb.
CDPXF
125 lb.
BDPXF
150 lb.
SDPXF
150 lb.
SSDPXF
150 lb.
Body & Cover Cast Iron
ASTM A 126,
Class B
Cast Iron
ASTM A 126,
Class B
Cast Iron
ASTM A 126,
Class B
Cast Bronze
ASTM B62 
Cast Carbon
Steel ASTM
A 216 WCB 
Cast Stainless
Steel 316 ASTM
A 351 CF8M 
Diverter Valve  Bronze  Cast Iron  Stainless
Steel *
Bronze  Bronze  Stainless
Steel *
Sleeve Bronze No Sleeve No Sleeve No Sleeve Bronze No Sleeve
Drive Shaft & Spindle Stainless
Steel
Mild
Steel
Stainless
Steel
Phosphor
Bronze
Stainless
Steel
Stainless
Steel
Basket Screens Stainless
Steel
Stainless
Steel
Stainless
Steel
Stainless
Steel
Stainless
Steel
Stainless
Steel
Drain Plugs Brass Brass Stainless
Steel
Phosphor
Bronze
Brass Stainless
Steel
Standard Seals (o-rings) Nitrile
-31°F to +248°F 
Nitrile
-31°F to +248°F 
Nitrile
-31°F to +248°F 
Nitrile
-31°F to +248°F 
Nitrile
-31°F to +248°F 
Viton
-4°F to +392°F 
Maximum Working
Pressure Non-Shock
- Water, Oil, Gas
(Not recommended for steam)
200 PSIG
at 150°F  
200 PSIG
at 150°F  
200 PSIG
at 120°F  
225 PSIG
at 150°F  
285 PSIG
at 100°F  
275 PSIG
at 100°F  
Maximum Temperature
with Optional Seal
+302°F  +392°F  +120°F  +392°F  +302°F  +392°F 
Larger sizes available upon request  *Nickel / Teflon (PTFE) Coated   

Available Options for All Styles

DIFFERENTIAL PRESSURE INDICATORS - Mounts directly to the strainer body and visually indicates when the baskets require cleaning. Preset at a differential pressure of 10 PSI with an option for settings of 5 and 15 PSI.
DIN ELECTRICAL PROBES
(32k PDF files) - For use with the above differential pressure indicator. Provides an electrical signal when the pre-set maximum differential pressure is reached.
BASKETS - Screens available in sizes ranging from 300 mesh to 1/4" perforations.
MAGNETIC INSERTS - Mounted to the strainer baskets to collect metallic particles.
100% SHUT-OFF - Achieved through the use of special seals within the change-over mechanism to eliminate leakage between chambers.
AIR ELIMINATORS - Automatically vents air from basket chambers. (ex. After basket cleaning).
MOUNTING STUDS / BRACKETS - Allowing the strainer to be independently supported.
HEATING JACKETS - Used to maintain the temperature of the process fluid inside the strainer. Mounted permanently to the strainer body allowing a supply of steam or hot water to pass around the body.
PRESSURE EQUALIZING VALVES - Standard on the 5, 6, and 8 IN. strainers, these may be fitted to other sizes upon request.
SPECIAL SEALING MATERIALS - EPDM, PTFE, Viton. Others upon request.
BODY AND INTERNALS - Available in other material combinations, consult factory.

REQUEST BULLETIN 9400