The Schedule 80 PVC Threaded Union allows you to create a detachable point in your pipe system without the need for cutting or gluing. Designed with Female Pipe Threads (FPT) on both ends, this fitting screws directly onto threaded nipples or risers, making it the perfect choice for connecting and disconnecting pumps, filter manifolds, and valve assemblies.
Unlike slip unions that require solvent welding, these irrigation fittings offer a glue-free installation. They feature a robust Schedule 80 gray PVC construction for high pressure resistance and an internal EPDM O-ring that ensures a water-tight seal when hand-tightened. Always use Thread Sealant Tape on your male connections to prevent leaks.
Industrial grade specifications.
| Specification | Details |
|---|---|
| Product Type | Union (Threaded) |
| Connection | FPT x FPT (Female Pipe Thread) |
| Material | Schedule 80 PVC (Gray) |
| O-Ring Material | EPDM |
| Standards | ASTM D-1784, ASTM D-2467, NSF Approved |
| Manufacturer | NDS |
| MPN (1/2") | U-0500-T |
| MPN (3/4") | U-0750-T |
| MPN (1") | U-1000-T |
| MPN (1 1/2") | U-1500-T |
| MPN (2") | U-2000-T |
Follow these steps for a leak-free threaded connection.
Step 1: Disassemble
Unscrew the large union nut to separate the fitting into its three parts.
Step 2: Apply Tape
Apply Thread Sealant Tape to the Male Pipe Threads (MPT) of the nipples or risers you are connecting to.
Step 3: Attach Tailpieces
Screw the threaded tailpieces of the union onto your system components. Hand tighten, then give a final 1/2 turn with a wrench. Note: Ensure the large union nut is trapped on the correct side before screwing it in!
Step 4: Connect
Align the two halves and hand-tighten the large union nut. The O-ring will create the seal.
Verify your thread type:
Get the right parts for a secure threaded manifold:
Apr 30th 2026
Apr 29th 2026
Apr 28th 2026
Apr 27th 2026
