PBH Series – Big Blue Filter Housing, 20 x 4.5 inch: 1.5″ In/Out Connections – 150337


Sold by case quantity, each case contains 4 complete housings.

Pentair Big Blue Cartridge Filter Housing (4.5″ x 20″): without pressure release valve

Has 1.5″ Female pipe thread connection for the Inlet and Outlet connections that are molded into the head assembly. This filter head has mounting locations for a wall mount bracket. This model does not include the pressure relief port, to remove pressure when changing filters. Important to have isolation valves that allow pressure to be removed from pipeline before changing filter cartridge.

SKU: 150337 Category:


Pentair Standard Bag Vessel Assemblies – your ultimate solution for extended system uptime and streamlined maintenance. Crafted from lightweight yet durable polypropylene, these assemblies are engineered to withstand corrosion while providing unmatched strength without the burden of excess weight.

Key Features:

  • Duplex system compatibility ensures uninterrupted flow rates for continuous operation.
  • Equipped with a single large ACME thread closure for quick opening and secure sealing.
  • Includes gauge, wrench, and 3/8″ drain valve for hassle-free installation and maintenance.
  • Versatile filter bag options available in polypropylene felt, high-efficiency polypropylene, and nylon monofilament mesh, catering to filtration needs ranging from 1 to 800 microns.


  • Housing: Polypropylene
  • Cap: Polypropylene (HFPP)
  • Gauge: Bismuth brass (lead-free)
  • Vent plug: Polypropylene
  • Drain plug: High-density polypropylene
  • Ball valve: PVC/Buna-N seals
  • Basket: Polypropylene
  • O-Ring: Buna-N
  • Temperature Rating: 40-100°F (4.4-37.8°C)
  • Maximum Pressure: 100 psi (6.2 bar)

Ideal for a Range of Applications:

  • Residential prefiltration
  • Food service industry
  • Commercial and industrial water filtration
  • Chemical filtration

Benefit from outstanding chemical compatibility and reliable performance in various low-flow applications. Choose from our selection of 10″ and 20″ housings, available in 1″ and 1-1/2″ NPT sizes, tailored to meet your specific needs. Experience the convenience of portability paired with economical pricing – the Pentair Standard Bag Vessel Assemblies redefine efficiency and reliability in filtration systems.

Datasheet for the Pentair PBH Bag filter housings

Additional information

Weight 10 lbs
Dimensions 24 × 8 × 8 in
Pressure Rating

100 PSI

Connection Type

Female pipe thread

Piping Connection Size


Has pressure relief valve