Watts PWCB BBP User Manual
Pure water, Standard carbon block filter cartridges, For residential and light commercial applications

For Residential and Light Commercial Applications
ES-WQ-PWCB
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PURE WATER
PWCB20BBS have been tested and certified under NSF/
ANSI standard 42 for materials only.
COMPONENTS
Series PWCB10S, 
PWCB20S, 
PWCB10BBS and 
PWCB20BBS 
Standard Carbon Block
Filter Cartridges
Flow Rates: Up to 8 gpm (30 lpm)
Thick wall carbon construction for superior performance
Top-of-the-line coconut shell Carbon Block filter cartridge for 
chlorine taste, odor and sediment reduction. 
Not for use or sale in California.
Features
•	 	Superior	chlorine	reduction
•	 	Low-pressure	drop
•	 	Will	not	channel
•	 	Cost	savings
•	 	100%	coconut	shell	carbon
•	 	Up	to	90%	chlorine	reduction*
•	 	FDA	grade	components	and	materials
Pressure — Temperature
Maximum	operating	pressure:		125	psig	(8.5	bar)
Operating	temperature:		50°F	to	125°F	(10°C	to	52°C)
*	Tested	and	verified	by	independent	laboratory	testing.
Model No.
Type
od
leNgTh
MICRoN
RaTINg
ChloRINe ReduCTIoN*
No. / Case
in.
mm
in.
mm
PWCB10S
Thick Wall
2
1
⁄
2
"
64
9
3
⁄
4
"
248
5 nominal
>4,000 Gal @ 1 gpm
20
PWCB20S
Thick Wall
2
1
⁄
2
"
64
20"
508
5 nominal
>8,000 Gal @ 2 gpm
12
PWCB10BBS
Thick Wall
4
1
⁄
2
"
114
9
3
⁄
4
"
248
5 nominal
>10,000 Gal @ 2 gpm
12
PWCB20BBS
Thick Wall
4
1
⁄
2
"
114
20"
508
5 nominal
>20,000 Gal @ 4 gpm
6
*Estimated chlorine reduction capacity using 2ppm free chlorine.
Dimensions
PWCB
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, 
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
Recommended Flow Rate
Model No.
od
leNgTh
FloW RaTe
in.
mm
in.
mm
gpm
lpm
PWCB10S
2
1
⁄
2
"
64
9
3
⁄
4
"
248
1
3.7
PWCB20S
2
1
⁄
2
"
64
20"
508
2
7.6
PWCB10BBS
4
1
⁄
2
"
114
9
3
⁄
4
"
248
4
15.1
PWCB20BBS
4
1
⁄
2
"
114
20"
508
8
30.3
