Pentair SD40 Standpipe Assembly | 152228
Pentair
SKU: 152228
Pentair 152228 Standpipe & Lateral Assembly – SD40 / 19″ Tank Sand Filters
The Pentair 152228 is a genuine replacement internal piping assembly for 19-inch tank sand filters — including the Pentair Sand Dollar SD40 and compatible Sta‑Rite Cristal‑Flo II filters built after October 2004. It’s the complete standpipe and lateral set needed to restore or rebuild the internal water distribution system inside the filter tank.
Key Features
- Complete replacement assembly — includes standpipe plus hub and laterals required for proper flow distribution and backwashing.
- OEM-grade design — ensures correct spacing and alignment for even filtration and uniform water flow through the sand bed.
- Durable, pool-rated plastic construction — resistant to pool water chemicals and long-term use.
- Direct-fit for SD40 and compatible 19″-tank sand filters — designed for easy replacement without modification.
Specifications
- Manufacturer: Pentair Pool Products
- Part Number: 152228
- Applicable Tanks: 19″-diameter sand filter tanks (e.g. SD40, Cristal-Flo II 19″) manufactured after October 2004
- Includes: Central standpipe, lateral hub, multiple laterals as required for the filter tank
- Material: Pool-rated plastic (PVC / ABS mix) for corrosion and chemical resistance
- Function: Internal water distribution — ensures efficient filtration and backwash performance
When to Replace / Use
Use the 152228 assembly when the existing internal piping shows cracks, collapsed laterals, leaks, or sand return issues. Also use when rebuilding or refurbishing an older SD40 / 19″ filter — replacing internal plumbing restores correct flow and prevents future filter failures.
Installation & Maintenance Tips
- Drain and empty the filter completely before disassembly — remove sand carefully to avoid mess and damage to base or tank.
- Remove old standpipe and laterals; clean out sand and inspect the tank interior before installing new assembly.
- Install the new 152228 unit, ensuring the hub and laterals are properly seated and aligned for correct flow.
- Refill with sand (if required), then backwash and rinse thoroughly to clear out any loose debris before returning to normal operation.
- Inspect laterals periodically (especially after heavy use or backwash cycles) to ensure none are cracked or blocked — replace assembly if needed.
Why It’s Important
Internal piping like the standpipe and laterals are critical for evenly distributing water through the sand media during filtration and backwash cycles. A damaged or degraded assembly can lead to uneven flow, channeling, sand bypass, poor water clarity, and ultimately premature filter failure. The 152228 kit ensures a reliable, OEM-correct internal plumbing system — restoring filter performance and extending system life.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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