33043a-03

Aqua Ultraviolet – Union Half 3/4" with O-Ring Overview OEM replacement 3/4" union half for Aqua Ultraviolet UV sterilizers and accessories. Includes a fresh O-ring to restore a clean, drip-tight connection when a union half is cracked, cross-threaded, or missing. Key Features Genuine Aqua Ultraviolet 3/4" union half Includes O-ring sized for the factory groove Durable, chemical-resistant construction Enables quick, tool-light disassembly for maintenance or winterizing Compatibility Fits Aqua Ultraviolet Classic / Advantage / SL models that use 3/4" unions Matches the opposite factory union half on the unit (verify your union style—slip, barb, or socket—before ordering) Specifications Size: 3/4" union half (single side) Seal: 3/4" union O-ring (included) Material: UV- and corrosion-resistant polymer Use: External plumbing; non-submersible component What’s Included (1) 3/4" union half (1) 3/4" union O-ring Installation Notes Shut off pump and relieve pressure. Separate the union; remove the old O-ring and clean groove/sealing faces. Lightly lube the new O-ring with silicone-safe grease; seat evenly. Hand-tighten, then snug—do not overtighten. Pressurize and leak-test.

Aqua Ultraviolet – Barb Fitting 3/4" Overview Durable 3/4" hose-barb fitting for connecting flexible tubing to Aqua Ultraviolet UV sterilizers and accessories. Ideal for quick, leak-resistant plumbing on small to mid-size aquarium and pond systems. Key Features 3/4" hose barb for flexible vinyl or silicone tubing Tight, ribbed grip to minimize slips and leaks Corrosion-resistant construction for freshwater or saltwater use Compatible with Aqua Ultraviolet Classic/Advantage models that accept barb fittings Compatibility Use anywhere a 3/4" barb connection is required on Aqua Ultraviolet units, unions, or adapters (check your model’s port/union size before ordering). Specifications Size: 3/4" hose barb Thread (typical): 3/4" male NPT to mate with standard Aqua UV unions/adapters Material: Rigid, chemical-resistant plastic (black) Use: Inline, non-submersible plumbing What’s Included (1) 3/4" barb fitting Installation Notes Push tubing fully over the barb; use a stainless clamp for a secure, drip-tight seal. Apply thread sealant/PTFE tape to the NPT side (if threaded) and hand-tighten, then snug—do not overtighten. Verify flow direction and leak-test before returning the system to service.