25mm to 3/4" PVC Adapter
Overview
Bridge metric plumbing to standard U.S. sizes with this compact 25 mm to 3/4" PVC adapter. Ideal for aquariums, sumps, ponds, and RO/DI setups, it solvent-welds directly to 25 mm metric pipe on one side and standard 3/4" Schedule 40 PVC on the other—making pump swaps and equipment upgrades simple and leak-free.
Key Features
Metric ↔ Imperial Conversion – Join 25 mm metric pipe to 3/4" IPS Schedule 40 PVC.
Solvent-Weld Sockets – Smooth, full-depth sockets for strong, permanent bonds.
Aquarium-Safe PVC-U – Inert, corrosion-resistant material for freshwater and marine use.
Full-Flow Design – Smooth bore minimizes head loss and microbubble generation.
Compact Footprint – Fits tight spaces in stands and sumps.
Durable & Serviceable – Compatible with standard PVC primer/cement; long service life.
Product Specifications
Type: Reducing/transition adapter
End A (Metric): 25 mm socket (solvent-weld)
End B (Imperial): 3/4" Schedule 40 socket (solvent-weld, IPS)
Material: PVC-U (Schedule 40)
Color: Gray (low-glare)
Pressure Rating: Up to 150 psi @ 73 °F (de-rate with temperature)
Temperature Range: 40–140 °F (4–60 °C) typical for PVC
Chemical Resistance: Freshwater, saltwater, most common aquarium additives
Standards: ISO 1452 (metric side), ASTM D2466 (imperial side)
Applications: Aquarium/sump plumbing, pump transitions, UV/return lines, reactors
Installation Tips
Dry-fit first; mark orientation.
Chamfer/deburr pipe ends; clean with PVC cleaner.
Use appropriate primer and medium-body PVC cement; insert fully with a 1/4-turn twist.
Hold 30 seconds; allow full cure per cement instructions before pressurizing.
Not for compressed air or gas service.
Need threaded or barb versions (25 mm × 3/4" NPT or 25 mm × 3/4" hose barb)? I can add those variants, too.
25mm to 3/4" PVC Adapter
$11.13