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FEATURES
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 strainer, filter and double element baskets.
Bodies individually pressure tested to UP specifications.
Spring handle holds basket on seat.
Independent gland for external stem packing access.
MODEL 72AFH SERIES — Cast Iron — PRESSURE
RANGE 200 TO 400 PSIG
PURPOSE
Kraissl pipeline strainers and filters protect pumps, nozzles,
valves, heat exchangers and other expensive pipeline
equipment from harmful contamination by catching dirt
and debris.
APPLICATION
Kraissl 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.
Kraissl 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.
DESIGN SPECIFICATIONS
Model 72AF and 72AFH series three piece duplex strainers
are furnished in both standard or high pressure models
with flanged port connections. The center valve section
or side bodies can be separately removed and serviced
independently. Threaded NPT models are also available,
described in other bulletins. 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 closure for easy access.
High pressure models have a stud-and-nut/bolted body
cover closures.
Materials of construction include rugged cast iron bodies,
covers, and iron valve plugs, and brass, carbon steel,
stainless steel or monel baskets. Special valve plugs can
also be furnished in bronze, 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 basked 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 baked is lifted
out for cleaning. Reverse flow is also possible if desired.
Magnet inserts are available to help eliminate fine metallic
ferrous particles.
All high pressure ("H")
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 inch through 1 1/2 inch inclusive - 100 PSIG; 2 inch
through 3 inch - 80 PSIG; 4 inch through 8 inch - 15 PSIG
An optional lifting jack can be provided to lift the valve
plug off its seat for ease in valve turning in rough service
on sizes 1 through 4 inch. A lifting jack is standard on
5, 6 and 8 inch sizes.
DOUBLE ELEMENT BASKETS
These units can be supplied with out patented double-element baskets which are easily disassembled for cleaning and provide greater straining areas in the same housing.
3 Piece Twin Filter MODEL 72AFH SERIES: Search & Sort — by Model # or Many Other criteria Sea-View 3D CAD — View • Download • Insert