Pentek GD and GDA Sediment Filters

Gradient Density Filters

The Pentek GD and GDA Series of cartridges are manufactured in the USA from 100% pure polypropylene and are sized for use in 10" and 20" Big Blue filter housings. GD and GDA Series filters are designed for purity and will not impact taste, odor and color. Pentek GD / GDA filters also provide superior chemical resistance and are not prone to bacterial attack.

Two unique layers provide up to three times the dirt-holding capacity than pleated, string-wound and standard spun polypropylene cartridges provide. A larger outer pre-filter reduces the partial load to the inner post filter allowing the cartridge to operate at higher velocities and lower pressure drop. The effective filter depth is increased over 200% of string-wound and standard spun-polypropylene cartridges for extended life, performance and reliability.

The design and performance characteristics of the GD and GDA Series filter cartridges make them an excellent choice for all residential, rural, municipal, industrial, and commercial applications.

The micron rating for the GD Series is nominal while the GDA Series micron ratings are absolute.

Features and Benefits

• 100% polypropylene filtration media for superior purity without affecting taste, odor or color.
• Two clearly visible gradient layers ensure higher efficiency and improved performance.
• Micron ratings for virtually any application (75-25 micron for outer layer, 20-0.5 micron for the inner layer).
• GDA Series has polypropylene inner support core for added strength and unimpeded flow.
• Polypropylene filter media resists chemicals and bacterial attack.
• Up to three times the dirt-holding capacity of similar-sized pleated, string-wound and spunpolypropylene cartridges.
• Effectively reduces sediment as a pre-filter to softener and automatic filter systems.
• Saves space: all-in-one, two-layer cartridge eliminates the need for additional filter canisters.

Typical Applications

Well water City water Homes Cafeterias

Hotel/Motel Laboratories Laundromats

Restaurants Schools Factories

Model	Micron Rating*	Dimensions	PSI change at flow rate	# per case	Buy in USA	Buy in Canada Why different pricing?
Pentek GD-7520-BB Part #55546543	Outside 75 Core 20	4 1/2" x 9 7/8"	<1.5 psi @ 10.0 gpm	8	US $119.60 ($14.95 / filter) Free Shipping	CDN $139.99 ($17.50 / filter) Free Shipping
Pentek GD-5010-BB Part #55546643	Outside 50 Core 10	4 1/2" x 9 7/8"	<2 psi @ 10.0 gpm	8	US $119.60 ($14.95 / filter) Free Shipping	CDN $139.99 ($17.50 / filter) Free Shipping
Pentek GD-2501-BB Part #55546743	Outside 25 Core 1	4 1/2" x 9 7/8"	<3.2 psi @ 10.0 gpm	8	US $119.60 ($14.95 / filter) Free Shipping	CDN $139.99 ($17.50 / filter) Free Shipping
Pentek GD-7520-20BB Part #55546843	Outside 75 Core 20	4 1/2" x 20"	<3 psi @ 10.0 gpm	6	US $167.70 ($27.95 / filter) Free Shipping	CDN $189.99 ($31.67 / filter) Free Shipping
Pentek GD-5010-20BB Part #55546943	Outside 50 Core 10	4 1/2" x 20"	<4 psi @ 10.0 gpm	6	US $167.70 ($27.95 / filter) Free Shipping	CDN $189.99 ($31.67 / filter) Free Shipping
Pentek GD-2501-20BB Part #55546843	Outside 25 Core 1	4 1/2" x 20"	<6.4 psi @ 10.0 gpm	6	US $167.70 ($27.95 / filter) Free Shipping	CDN $189.99 ($31.67 / filter) Free Shipping
Pentek GDA-7505-BB Part #55547143	Outside 75 Core 5	4 1/2" x 9 7/8"	<5.2 psi @ 10.0 gpm	8	US $175.60 ($21.95 / filter) Free Shipping	CDN $199.38 ($24.92 / filter) Free Shipping
Pentek GDA-5001-BB Part #55547243	Outside 50 Core 1	4 1/2" x 9 7/8"	<9 psi @ 10.0 gpm	8	US $175.60 ($21.95 / filter) Free Shipping	CDN $199.38 ($24.92 / filter) Free Shipping
Pentek GDA-250.5-BB Part #55547343	Outside 25 Core 0.5	4 1/2" x 9 7/8"	<10.5 psi @ 10.0 gpm	8	US $175.60 ($21.95 / filter) Free Shipping	CDN $199.38 ($24.92 / filter) Free Shipping
Pentek GDA-7505-20BB Part #55547643	Outside 75 Core 5	4 1/2" x 20"	<10.4 psi @ 10.0 gpm	6	US $239.70 ($39.95 / filter) Free Shipping	CDN $266.69 ($44.45 / filter) Free Shipping
Pentek GDA-5001-20BB Part #55547543	Outside 50 Core 1	4 1/2" x 20"	<18 psi @ 10.0 gpm	6	US $239.70 ($39.95 / filter) Free Shipping	CDN $266.69 ($44.45 / filter) Free Shipping
Pentek GDA-250.5-20BB Part #55547443	Outside 25 Core 0.5	4 1/2" x 20"	<21 psi @ 10.0 gpm	6	US $239.70 ($39.95 / filter) Free Shipping	CDN $266.69 ($44.45 / filter) Free Shipping

*Nominal/Absolute Micron Ratings based on manufacturer's internal testing.