Waterway Universal Filter Drain Plug 1.5"MPT w/ O-Ring | 400-6621
Waterway
SKU: WWP4006621
Waterway Universal Filter Drain Plug 1.5" MPT w/ O-Ring | 400-6621
The Waterway Universal Filter Drain Plug 1.5" MPT w/ O-Ring (400-6621) is a replacement drain plug assembly designed for use in most pool and spa filter tanks. It provides a threaded 1.5" male connection that allows you to easily drain water from the filter body during winterization, servicing, or routine cleaning.
What This Part Is For
This drain plug is used on the bottom or side of a filter tank where a 1.5" female threaded port exists. It enables you to:
- Drain water out of the filter housing without disconnecting plumbing.
- Perform winterization or seasonal winter drain-downs.
- Flush out debris or residual water when servicing cartridges or grids.
Features & Benefits
- 1.5" male pipe thread (MPT) fits standard 1.5" filter ports.
- O-ring creates a watertight seal to prevent leaks under pressure.
- Universal design works with many brands of pool and spa filters.
- Easy to remove for fast draining and reinstallation.
Installation Notes
- Turn off the pump and relieve system pressure before opening the plug.
- Apply thread seal tape if recommended by your filter manufacturer for extra leak protection.
- Screw the plug into the 1.5" drain port until snug — do not overtighten.
Maintenance Tips
- Inspect the O-ring periodically for cracking or wear; replace if necessary.
- Lubricate the O-ring with a pool-safe silicone lubricant to help maintain a good seal.
- Ensure the plug threads are clean and free of debris before reinstalling.
Hours Of Operation:
Monday - Friday: 8:00 am to 4:00 pm Phoenix Time
Saturday and Sunday: Closed
- Orders costing more than $300 WILL be required to have signature confirmation upon delivery.
- Handling time is typically only 1 day.
- Any item ordered after 1pm Phoenix time, may not ship same-day.
- Call us if you require expedited shipping and we can give you quotes based on your needs.
Return Policy:
- All products, except as noted below, are eligible for return up to 30 days after receipt of item.
- For returns, an RMA form must be filled out HERE or customers can call for additional help.
- Shipping costs will be deducted from all returned items.
- Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in.
- Items broken, damaged, or inoperable due to installer error will not be refunded.
- Fill out the return form or give us a call to obtain an RMA and return shipping label.
- There are no returns on the Pentair Colorsync 618031
- No returns on pool cleaners.
- No returns on opened seals and o-rings.
- No returns on capacitors.
- If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
- All products denied upon arrival at customers house WILL be charged the cost to ship.
- Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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