Evolution Aqua Double Union Ball Valves - 32mm
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Product Information
Full details
The Evolution Aqua Double Union Ball Valve 32mm is designed for pond owners and aquarium hobbyists who require reliable flow control and easy maintenance for their filtration or plumbing systems. Its primary benefit is the double union design, which allows for the rapid removal of pumps and equipment without draining the entire pipe network, though users should ensure they are using the correct solvent weld adhesive for a watertight seal during the initial installation.
All features
| Model Part Number | K25-50-32 |
|---|---|
| Brand | Evolution Aqua |
Extended Product Information
FAQs
Are these valves compatible with flexible hose?
These valves are designed specifically for rigid 32mm solvent weld or pressure pipework.
Do I need to use thread seal tape?
The union connections rely on an internal O-ring seal, so thread seal tape is typically not required on the union threads.
Can these be installed vertically?
Yes, these valves function effectively in both horizontal and vertical pipe orientations.
What is the maximum pressure rating?
These valves are designed for standard pond and aquarium applications; please verify your system pressure does not exceed the rating for 32mm pipework.
Can I replace the internal O-ring?
The double union design allows access to the internal components, making it easier to maintain or replace seals if they become worn.
Troubleshooting
Leakage at the union fitting
Ensure the internal rubber O-ring is seated correctly and the union nut is tightened firmly by hand.
Handle is difficult to turn
Flush the valve with clean water to remove debris or salt build-up; do not use force as it may damage the internal seal.
Joint leaking after installation
Check that the solvent weld adhesive was applied evenly around the circumference of the pipe; re-apply if necessary.
Pros and Cons
Pros
- Simplifies routine equipment maintenance
- High-quality, durable build standard
- Allows for complete isolation of water flow
- Easy to install in both new and existing pipe runs
Cons
- Requires solvent weld adhesive for permanent installation
- Not intended for non-standard pipe diameters
- Requires regular inspection to prevent calcification in hard water areas
Setup, Compatibility & Care
For setup, ensure that the pipe ends are clean, dry, and free of debris before applying solvent weld cement. Apply the cement to both the pipe and the inner socket of the valve, then slide together and hold firmly to set. Once installed, avoid overtightening the union nuts with tools; hand-tightening is generally sufficient to achieve a seal. To care for the valves, operate the handle occasionally if the system is inactive to prevent sediment build-up. In hard water areas, inspect the internal ball mechanism annually to ensure no lime scale prevents a full closure.