CHECK VALVE DUAL UNION 3"

The Check Valve Dual Union 3" is a heavy-duty, high-capacity backflow prevention valve designed for use in large-scale pond systems, commercial water features, filtration lines, and high-flow pump setups. Its true union design with dual disconnect points makes maintenance and replacement fast and clean—no cutting or re-plumbing required.

This valve series includes:

• Complete valve assemblies with 3" male adapters and pipe

• Slip-fit models for easy solvent-weld installation

• Threaded collars and O-rings for replacement and long-term servicing

• Just the valve body for use with existing union parts

Built from high-strength PVC and corrosion-resistant internals, this valve delivers long-term durability and leak protection, even in high-volume aquatic environments.

? Product Variants:

1. Check Valve Dual Union 3" w/ 3" Pipe & Male Adapter
   Complete pre-assembled system for pump installation with adapters included.

2. Check Valve Dual Union 3" – 3" Slip Fitting
   Includes slip socket ends for gluing into standard 3" PVC pipe.

3. Check Valve Dual Union 3" – Threaded Collar
   Replacement collar to secure union on either side of the valve body.

4. Check Valve Dual Union 3" – Just the Valve
   Standalone valve body (no collars or fittings) for direct replacement.

5. Check Valve Dual Union 3" – O-Ring
   High-quality rubber O-ring for leak-free sealing. Sold individually.

✅ Key Features:

• True Union Design: Easy to remove and replace without cutting pipe

• Heavy-Duty 3" Build: Handles large water volumes and high-flow systems

• Compatible with Multiple Configurations: Slip, threaded, or adapter connections

• Replaceable Parts Available: Threaded collars and O-rings for maintenance

• Corrosion-Resistant Construction: PVC body with durable seals

• Free Shipping is valid for orders with a subtotal exceeding $199 and all orders will be shipped via UPS. Items purchased for delivery after 3pm will ship the following day. Items purchased for delivery after 3pm on Friday will ship Monday.
• Koi Fish only ship Monday- Wednesday. For orders placed after 3pm on Wednesday, the order will be shipped the following Monday.
• For Motor Freight (LTL) Shipments, oversized or heavy items unsuitable for traditional parcel delivery will be dispatched through a motor freight carrier, as indicated on the product page. Once the carrier receives your order, they will reach out to arrange a delivery time. An individual aged 18 or older must be present to sign for the delivery.
• You may return or exchange an unused or unopened item for a refund (excluding shipping and handling charges) within 30 days of purchase. Following 30 days, the item may be returned in exchange for a store credit. Used chemicals and fish food are not returnable. In addition, all sales on Japanese Koi are final and non-refundable. Should you have any questions or concerns when your fish arrive, please call 908-420-9908.