Duplex Basket Strainers
Purpose
Oxford Filtration pipeline strainers and filters protect pumps, nozzles, valves, heat exchangers
and other expensive pipeline equipment from harmful contamination by catching dirt and debris.
Application
Oxford Filtration duplex strainers and filters provide a simple, cost effective
way to separate particle impurities from fluid systems. Duplex strainers are ideal
for applications where continuous flow must be maintained, with no flow
interruption for basket cleaning. Model XD duplex basket strainers are limited
to a maximum working pressure of 14 barg at 50C (lower pressure allowable at a higher temp).
Oxford Filtration strainers are listed by Underwriters Laboratories, Inc. (U.L.),
and are individually tested to U. L. quality control specifications. These cast
pipeline strainers are manufactured according to international standard
A.S.T.M. F1199 for use in industrial and marine applications.
- Hand clamp requires no special tools on low pressure models.
- Valve handle shields side in use.
- Accessible swing yoke closure for easy basket cleaning.
- Continuous flow without interruption during changeover.
- Tapered valve plug for durability.
- Drain connections on each basket chamber.
- Interchangeable perforated, finer mesh and double area baskets.
- Bodies individually pressure tested to U.L. specifications.
- Spring handle holds basket on seat.
- Independent gland for external stem packing access.
- Adjustable locking flange establishes valve clearance.
- Mounting feet provided.
Model XD Series Duplex Strainers
Model XD series duplex strainers are furnished in both standard or high
pressure models with flanged, screwed, socket weld or butt weld port
connections. Internal channels are 100% full-flow, having the same cross-sectional
area as the equivalent pipe size. Standard pressure models are furnished with our
quick-opening, hand-clamp for easy access. High pressure models are stud and
nut body cover closures.
Materials of contruction include cast iron, carbon steel, stainless steel ,
bronze or aluminium. Units fitted as standard with stainless steel baskets but
also available in brass or monel. Special valve plugs
can also be furnished in stainless steel or other materials.
These duplex strainers have a built-in, tapered plug valve that directs flow
through either side without shutting off the flow. A valve handle guard shields the
side in use. The standard valve handle swings over the inlet port. Special reverse
valve handles that swing over the outlet port can also be furnished. Drain plugs
are provided in each of the valve and basket chambers. An adjustable locking
flange holds the valve plug on its seat.
A separate, external gland is provided to allow easy access to valve stem packing
without complete disassembly, even while in service.
Strainer baskets are fabricated from perforated metal. The smallest common perforation size is 1/64 inch in brass and
1/32 inch in stainless steel. Filter baskets are manufactured by using fine mesh
wire cloth over supporting perforated metal. Interchangeable strainer, filter and
double element baskets provide a flexible range of operating choices. The basket is
held on its seat by a spring basket handle. Normal flow is through the
interior of the basket which then contains the collected debris when the
basket is lifted out for cleaning. Reverse flow is also possible if desired. Magnet
inserts are available to help eliminate fine metallic ferrous particles.
High Pressure Models
All high pressure models with stud and nut closure are supplied with balancing valve assemblies to equalize
pressure and ease valve turning. These should be specified on standard pressure
models when used above the following pressures: 3/4” through 1-1/2” inclusive,
100 psig; 2” & 2-1/2’ , 80 psig.
An optional lifting jack can be provided to lift the valve plug off its seat
for ease of valve turning in difficult service.
Duplex Basket Strainer Specifications: click image to download pdf or click a link to see more
