OEM replacement 2" union half for Aqua Ultraviolet UV sterilizers and accessories. Includes a fresh O-ring to restore a drip-tight seal—ideal when a union half is cracked, cross-threaded, or missing.
Genuine Aqua Ultraviolet 2" union half
Includes O-ring sized for the factory groove
Rugged, chemical-resistant construction (white)
Restores leak-free, serviceable connections
Fits Aqua Ultraviolet Classic / SL bodies and accessories that use 2" slip/socket unions
Matches the opposite factory union half on the unit (verify your union style before ordering)
Size: 2" union half (single side)
Seal: 2" union O-ring (included)
Material: Durable, UV- and corrosion-resistant polymer (white)
Use: External plumbing; non-submersible component
(1) 2" union half — white
(1) 2" union O-ring
Shut off pump and relieve pressure.
Separate the union and remove the old O-ring; clean the groove and faces.
Lightly lubricate the new O-ring with silicone-safe lubricant; seat evenly.
Hand-tighten, then snug—do not overtighten.
Pressurize and leak-test.