Pentair 50 SqFt Dynamic Series II High Flow Top Load Filter R172504B Parts & Diagram
Replacement parts and exploded parts diagram for the Pentair 50 SqFt Dynamic Series II High Flow Top Load Filter (model R172504B). Find the part on the diagram, then look for the same number (#) next to each part in the Available Parts list and add the parts you need to your cart.
Parts marked Alternate are compatible replacements from other manufacturers.
Other Parts on This Diagram
These parts are not listed for online purchase. Contact us with the diagram number and part number to order.
- #1 – R172610DG – Niche only, Dark Grey (RTL and RCF Niche Assembly )
- #3 – R172612 – No. 10 x 3/4, SS Flat Head Screw (RTL and RCF Niche Assembly )
- #6B – R173434 – 50 sq. ft. Cartridge (All three cartridges are interchangeable)
- #7 – R172225X – 1-1/2 in. Plug to Disable By-Pass
- #7A – R172679 – 2 in. Plug to Disable By-Pass
- #8 – R172226X – 1-1/2 in. By-Pass Assembly
- #8A – R172684 – 2 in. By-Pass Assembly
- #8B – R172226XF – 1-1/2 in. By-Pass assembly, low Flow
- #9 – R172392 – 1/4 in. Access plug, Earlier Models
- #9A – R172393 – Access Plug O-ring, Earlier Models
- #10 – R172370 – Bottom Locking Flange
- #10A – R170070 – O-ring, Locking Flange (Optional)
- #12 – R172374 – Lock Spring
- #13 – R172375 – Lock Screw
- #14 – R172386 – RTL/RCF-25 Housing Assembly 1-1/2 in., Slip (Only one applies to your filter, check model number when ordering)
- #14A – R172387 – RTL/RCF-25 Housing Assembly 1-1/2 in., FPT (Only one applies to your filter, check model number when ordering)
- #14B – R172388 – RTL/RCF-50 Housing Assembly 1-1/2 in., Slip (Only one applies to your filter, check model number when ordering)
- #14C – R172389 – RTL/RCF-50 Housing assembly, 1-1/2 in., FPT (Only one applies to your filter, check model number when ordering)
- #14E – R172421 – RTL/RCF-25 Housing assembly, 2 in. Slip (Only one applies to your filter, check model number when ordering)
- #14F – R172428 – RTL/RCF-50 Housing assembly, 2 in. Slip (Only one applies to your filter, check model number when ordering)
- #14G – R172638 – RTL/RCF-75 Housing assembly, 2 in. Slip (Only one applies to your filter, check model number when ordering)
- #14H – R172639 – RTL/RCF-100 Housing assembly, 2 in. Slip (Only one applies to your filter, check model number when ordering)
- #16 – R172540 – Chlorine/Bromine dispenser, complete, RCF
- Not shown – R170072 – O-ring, Niche to spa (Optional)
Please confirm your model number matches your existing equipment before ordering.
GTIN:
SKU: DIAGRAM-R172504B
Brand: Pentair
Price range
$4.68 - $38.88
Tax and shipping are calculated at checkout.

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Key Features
- Exploded parts diagram for the Pentair 50 SqFt Dynamic Series II High Flow Top Load Filter (model R172504B)
- 13 replacement parts available to order online
- Diagram number shown next to every part for easy matching
- Genuine Pentair parts plus compatible alternates
- Add multiple parts to your cart at once