Porvair Filtration Group
Porvair Filtration Group

General Numbers: +44 (0)1489 864330

The Americas: +1 804 550 1600
Asia: +86 (0)712 2878955
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These housings are available in a wide selection of materials including Keystone’s EXCLUSIVE CLEAR styrene models. Standard filter housings offer the following:

  • Available with Keystone’s EXCLUSIVE 10" and 20" clear styrene acrylonitrile (SAN) bowl or our 10" and 20" blue talc reinforced polypropylene bowl.
  • Features 3/4" NPT connections. (Also available with British pipe threads.)
  • Head and sump threads incorporate Keystone’s EXCLUSIVE positive stop feature to prevent overtightening.
  • O-ring is securely retained in groove at top of bowl so that it stays in place even during cartridge replacement.
  • Available from stock with or without pressure relief vent button.
  • Custom colors available by special order.
  • Mounting bosses in head for available bracket.
  • Accepts industry standard cartridge size: 2-1/2" O.D. x 1" I.D. x 9-3/4" (full length), and 20" (double length).
  • Full testing to industry standards of the Water Quality Association for burst pressure, water tightness and fatigue resistance.
  • FDA grade material for potable water
Dirt, Rust & Sediment filters
Unit of Measure
Items 21N
21N
Standard Filter Housing - Full Size/Clear Bowl w/ Pressure Relief Button
List Price $131.00
 21N
22N
Standard Filter Housing - Half Size/Clear Bowl w/ Pressure Relief Button
List Price $129.00
 23NDW
23N
Standard Filter Housing - Double Length/Clear Bowl w/ Pressure Relief Button
List Price $181.00
Keystone Part # N/A 051105 N/A S51107 N/A 051765
Size N/A Full Size (Fits Standard 9-3/4" Cartridges) N/A Half Size (Fits Standard 4-7/8" Cartridges) N/A Double Length (Fits Standard 20" Cartridges)
Material N/A White Talc Reinforced Polypro Head / Clear Styrene Acrylonitrile (SAN) Bowl
Housing Style N/A With Pressure Relief Button
Height N/A 14.12" N/A 9.25" N/A 24.44"
O.D. N/A 5.5"
Max. Operating Temperature N/A 125 degrees F (52 degrees C)
Max. Operating Pressure - at 70 degrees F (21 degrees C) N/A 150 psi (10.5 kcsh)
Pipe Size N/A 3/4" NPT (BSP Available)
Number of Cartridges Housing Holds N/A 1
Shipping Weight (each) N/A 3.3 lbs N/A 2.6 lbs N/A 4.5 lbs
Packaging N/A
Certification N/A NSF Approved N/A N/A NSF Approved