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The Primaflow Gate Valve 35mm is an essential plumbing component designed for professional and DIY users who need to isolate specific sections of a water supply system. Its primary benefit is enabling targeted maintenance or repairs without requiring a total system drain-down, though users should note it is designed specifically for 35mm piping and requires correct compression technique to prevent leaks.
| Model Part Number | GSL35 10020634 6 |
|---|---|
| Brand | Primaflow |
No, this Primaflow Gate Valve is designed specifically for water supply applications and should not be used with gas lines.
Gate valves are designed primarily for full open or full closed positions. They are not recommended for throttling or regulating flow.
Verify the pipe is not oval and is completely clean of debris. If the pipe is deformed, it may need to be recut or replaced.
Generally, gate valves are bi-directional, but it is standard practice to install them so the flow does not push against the gate stem unnecessarily.
Yes, if the olive has been over-tightened or damaged, it can be replaced with a standard 35mm compression olive.
Tighten the nut by an additional quarter turn. If the leak persists, disassemble to check for a damaged olive or debris on the pipe surface.
Apply gentle pressure in both directions to break up limescale buildup. Do not use excessive force or tools on the handwheel as it may snap.
To install, ensure the 35mm pipe end is cut square and deburred to prevent damage to the olive. Slide the nut and olive onto the pipe, insert the pipe fully into the valve body, and tighten the nut manually before finishing with a wrench for approximately half to three-quarters of a turn. Avoid over-tightening, as this can deform the olive. Periodic care involves operating the valve at least twice a year—fully closing and opening it—to prevent mineral buildup and internal seizing in hard water areas.
