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The Primaflow 15mm compression stopcock is an essential plumbing component designed for homeowners and professional installers who need reliable control over water flow for maintenance or emergency repairs. It allows for the quick isolation of specific pipe branches or incoming mains, significantly reducing the downtime required for repairs. While highly durable due to its brass construction, users should note that improper tightening of the compression nut can result in leaks, necessitating precise installation techniques.
| Model Part Number | 960990 |
|---|---|
| Brand | Primaflow |
Yes, the unit includes the necessary nuts and olives for installation on 15mm copper pipe.
You can use it on plastic piping, but you must use a pipe insert (stiffener) inside the plastic pipe to prevent it from collapsing when compressed.
This brass stopcock is designed for standard domestic water pressure ratings; always consult your local plumbing codes for specific pressure requirements.
No, compression fittings create a mechanical seal via the olive and do not require PTFE tape on the threads.
Yes, this stopcock can be installed in any orientation along the pipe run.
Ensure the pipe is pushed fully into the valve and tighten the nut by another quarter turn.
Apply a small amount of silicone-based plumbing lubricant to the stem or gently cycle the valve open and closed to break up mineral deposits.
Check that the olive is not deformed and that the pipe end is not distorted or damaged.
To install the Primaflow 15mm stopcock, ensure the pipe end is clean, round, and free of burrs. Slide the nut and then the olive onto the pipe. Insert the pipe end fully into the valve body and hand-tighten the nut. Using two wrenches, tighten the nut approximately 3/4 to 1 full turn beyond hand-tight. Do not overtighten, as this can crush the olive and compromise the seal. For care, avoid using abrasive chemicals on the brass exterior. Periodically test the valve by opening and closing it to ensure the internal mechanism remains free-moving and to prevent mineral buildup in hard water areas.
