Waterway
Waterway Split Union Nut – 1-1/2" & 2"
Waterway Split Union Nut – 1-1/2" & 2"
Learn more
- Koi Pond Pump and Aeration Buyer's Guide: Sizing, Head and Running Cost Turnover rate, head pressure and what it costs to run per month.
- Koi Pond Filter and Filtration Buyer's Guide: Staging, Sizing and What to Buy Why you halve the gallon rating, and how to tell yours is falling behind.
- Koi Pond Supplies: What You Actually Need for a Backyard Koi Pond The full build, in the order you buy it, with real costs.
Ordering Information
Ordering Information
At Champion Nishikigoi, we’ve streamlined the order process for a smooth experience with koi fish, food, and pond equipment.
Koi Fish Orders:
After placing a koi fish order, we confirm availability and health, reserve your koi, and prepare it for pickup or shipping. If issues arise, we’ll reach out to discuss options.
Product Orders (Food & Equipment):
For supplies, we gather your items and notify you for pickup. If anything is out of stock, we’ll discuss alternatives.
Pickup & Shipping:
• Local Pickup: Available Tuesday to Sunday, 10 am to 5 pm.
• Shipping: We offer expedited shipping for koi with health checks and tracking for safe arrival.
For complete details, click here.
Refund Policy
Refund Policy
Live Fish:
- Due to the delicate nature of our fish, we cannot accept returns. However, we are committed to ensuring you receive your fish alive.
- Please ensure you are present during delivery to accept and sign for your fish.
- If, unfortunately, your fish arrives deceased, notify us within one hour of delivery. Send a digital photo as proof to champkoi@champkoi.com, and we'll replace it with another of equal value.
Non-Returnable Items:
- Chemicals, medications, water conditioners, and pond liners cannot be returned due to safety and quality reasons.
General Merchandise Returns:
- If you're not completely satisfied, you may return items within 14 days, subject to a 15% restocking fee. Note: shipping and handling costs are non-refundable.
- Items on sale or special deals, as well as special order items, cannot be returned.
- To ensure a smooth return:
- Items must be in unused, resellable condition.
- Original packaging, warranty books, manuals, parts, and accessories must be intact.
- For shipping, please encase the original packaging in another carton to prevent damage.
Return Process:
- Prior to returning any items, please obtain a Return Goods Authorization number (RGA) by contacting us. Have your invoice ready for reference.
- After inspection, we'll confirm acceptance of the returned merchandise.
Return Shipping:
- Customers cover return freight costs. If we made an error or the item is defective, we'll handle the freight charges.
- For orders with free shipping, the actual outgoing freight charge will be borne by the customer.
We're always here to help. Please reach out if you have any questions or concerns!
A Waterway split union nut is the repair part for the most annoying plumbing failure there is: a cracked union nut on a pump or heater tailpiece that's already glued into the system. Because the nut comes in two halves that screw together around the pipe, you replace it without cutting anything — open it, wrap it around the tailpiece, join the halves, done.
Sizes
- 1-1/2" (part 415-4051) — tall buttress-thread nut, black
- 2" (part 400-5161) — pump and heater union nut, joining screws included; fits the 2" tailpiece unions on Waterway Hi-Flo pumps and most spa heaters
Fitting notes
- Match the thread: these are buttress-thread union nuts, the style on Waterway and most pool and spa unions. Compare against the old nut before ordering.
- Check the O-ring while the nut is off — a cracked nut has usually been overtightened against a flattened O-ring, and reusing that O-ring re-creates the leak that started it all.
- Hand-tight only. The O-ring seals; the nut just holds it.
Goes with
Complete Waterway union assemblies if the tailpiece side is damaged too, and the rest of the plumbing collection.
Why buy from ChampKoi?
ChampKoi has kept koi pond plumbing tight from our San Jose facility since 1998. The split nut exists so a five-dollar crack doesn't become an afternoon with a hacksaw.
