Pentair Collector Hub Assembly | WC137-519P
Pentair
SKU: WC137-519P
Pentair / Sta-Rite WC137-519P Collector Hub & Standpipe Assembly for Cristal-Flo T-BP Sand Filter (T-240BP-1)
The Pentair / Sta-Rite WC137-519P is a replacement collector hub and standpipe assembly used inside select Sta-Rite Cristal-Flo T-BP series high-rate sand filters. This internal assembly ties the standpipe to the underdrain/collector system so filtered water is directed correctly back to the pool while keeping filter sand contained in the tank.
Key Details
- Manufacturer: Pentair / Sta-Rite
- Part Number: WC137-519P
- Part Type: Collector hub & standpipe assembly (internal sand filter component)
- Primary Compatibility: Sta-Rite Cristal-Flo T-BP series sand filter model T-240BP-1
- Common Alternate/Legacy References: 603213, 4684-13B
Dimensions (Commonly Listed)
- Overall Length: 26-1/4"
- Overall Height/Width (approx.): 5-3/4" x 5-3/4"
What This Part Does
- Connects the internal standpipe to the collector hub/manifold inside the sand filter.
- Helps maintain proper water flow through the sand bed and back into the return line.
- Supports the underdrain system so filter media stays in the tank and does not return to the pool.
When to Replace
- Cracked, broken, or warped hub/standpipe components found during service
- Persistent sand returning to the pool after confirming the correct sand level and intact laterals
- Damaged internal connection points that prevent the collector/lateral assembly from sealing correctly
- Major internal rebuild after freeze damage or impact damage to the filter base components
Installation Notes
- Shut off the pump, relieve pressure, and drain the filter before opening the tank.
- Remove sand as needed to access internal components without stressing the laterals.
- Inspect and replace any cracked laterals, worn seals, or damaged internal fittings at the same time to prevent repeat issues.
- Reassemble carefully so the standpipe is seated straight and the hub is fully engaged with the collector/lateral system.
- After reassembly, rinse/flush the system as appropriate and confirm no sand is returning to the pool.
Maintenance Tip
If you ever see sand in the pool, inspect the internal underdrain system promptly. Small cracks in internal parts or laterals can worsen quickly and allow more sand to pass, which can damage heaters, salt cells, and return fittings.
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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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