Primaflow Gate Valve - 42mm Compression - 102249
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Product Information
Full details
The Primaflow Gate Valve (102249) is an essential component for professional plumbers and serious DIYers looking for a reliable, high-flow isolating solution for 42mm pipework. Its primary benefit is the full-bore design, which ensures minimal pressure drop, while the DZR brass construction provides exceptional resistance against corrosion in aggressive water environments; however, users should note this valve is designed strictly for binary fully-open or fully-closed operation and should not be used to throttle or regulate flow.
All features
| Model Part Number | 102249 |
|---|---|
| Brand | Primaflow |
Extended Product Information
FAQs
Can I use this valve to regulate the flow of water?
No. This valve is designed only for fully open or fully closed positions. Throttling can cause severe wear on the gate.
What does DZR brass mean?
DZR stands for Dezincification Resistant. It is a specialized alloy designed to prevent the zinc from leaching out of the brass, which prevents the valve from becoming brittle in aggressive water.
Is this valve suitable for central heating systems?
Yes, its durable construction makes it well-suited for hot water and central heating circuits.
Does this valve have directional flow?
While gate valves are generally bi-directional, it is best practice to install them so the flow does not impede the closing mechanism.
Can I connect this to plastic pipe?
Only if you use the appropriate pipe inserts meant for the specific brand of plastic pipe you are using to ensure the compression seal is maintained.
Troubleshooting
Water leaking from the valve stem
Gently tighten the gland nut located under the handle to compress the packing seal.
Difficulty turning the handle
Check for mineral deposits or debris trapped in the gate track. If stubborn, ensure the system is isolated, then remove the bonnet to clean.
Leakage at the compression joint
Ensure the pipe is cut squarely and the olive is seated correctly. Retighten the nut slightly; if the leak persists, the olive may need replacement.
Pros and Cons
Pros
- Superior resistance to dezincification compared to standard brass
- Full-bore design prevents pressure drops
- Easy installation with compression fittings
- High-quality, durable DZR brass build
Cons
- Not intended for flow regulation (throttling)
- Requires 42mm specific pipework
- Larger profile than ball valves
Setup, Compatibility & Care
To install, ensure the 42mm pipe ends are cut square and deburred to prevent damage to the internal compression olives. Insert the pipe fully into the valve body and tighten the compression nuts manually until snug, then use a suitable wrench to tighten approximately one half-turn further. Do not overtighten, as this can deform the olive. For maintenance, check the valve periodically for any signs of weeping at the gland nut. If a leak occurs at the stem, tightening the gland nut slightly is usually sufficient. Avoid using chemical cleaners that are not compatible with brass, and ensure the system is flushed before final tightening to clear any debris that might damage the internal seat.