Now, applications requiring polypropylene or polyester
felt filter bags can take advantage of all welded
construction filter bags from Hayward Industrial
Products, Inc.

In these bags, which feature strong welded
construction, the seams and ring seal of the bag fabric
are welded, rather than sewn. This ensures that there
can be no bypass of the process liquid through holes
in the fabric created as a result of a sewing process.

Hayward, fully welded bags, offer a higher
performance than sewn bags improving the quality of
your filtration process to new levels.
Hayward follows strict engineering standards in
sourcing raw materials and in the manufacturing
process of all filter bags to ensure that they are 100%
silicone free.

Finally, every Welded Construction Filter Bag uses
Hayward’s patented SENTINEL® collar … which
insures a perfect seal between the filter bag and the
vessel for no-bypass filtration. Of used filter bags are
disposed of by incineration, this plastic collar offers a
significant advantage over a metal snap ring, collar.

SENTINEL® Collar Filter Bag Seal
The SENTINEL® all-plastic collar is an improvement
over other filter bag sealing systems. The SENTINEL®
collar fits into the filter vessel housing in an unique
manner that provides a positive, self-energized seal in
the filter vessel that restricts the process fluid from
bypassing the filter bag. This seal is enhanced as the
pressure differential increases during operation.

Hayward’s SENTINEL® collar design also creates a
constant, radially-directed pressure to prevent the ring
from collapsing into the restrainer basket.

The elevated handles, which remain above the liquid,
make bag change out fast and efficient. Contact with
aggressive fluids is greatly reduced.

The patented SENTINEL® collar is your assurance of
a bypass-free filtration system. Combined with fully
welded media construction, the SENTINEL® collar
assures that every drop of liquid is filtered with no
bypass.

The SENTINEL® collar is available in 7” diameters.