How to set up a standpipe on the bore mainline
- David Bennett
- 3 minutes ago
- 2 min read
This comes up regularly with our semi rural clients so here is a guide
🧰 Equipment Needed
PVC standpipe assembly (typically 25–50 mm diameter, schedule 40 or 80)
Isolation valve (ball or gate)
Non-return valve (check valve)
Threaded or camlock coupling (for hose connection)
T-piece or saddle clamp for connecting into the mainline
Primer and solvent cement (if PVC)
PTFE thread seal tape
Pipe wrench / spanner
Pressure gauge (optional but recommended)
💧 Step-by-Step Setup Guide
1. Select the Installation Point
Choose a location on the bore mainline (after the borehead and check valve but before irrigation solenoids or filtration) where:
The pipe is accessible and straight for at least 300 mm.
There’s enough space for a vertical standpipe without obstruction.
2. Shut Down and Depressurize the System
Turn off the bore pump and open a downstream valve to release pressure in the line before cutting.
3. Install the T-Piece or Saddle Clamp
Cut the mainline cleanly at the chosen point.
Fit the T-piece with solvent cement (PVC) or compression fittings (poly).
Alternatively, install a saddle clamp with threaded outlet for smaller setups.
Ensure the branch points vertically upward.
4. Add the Isolation Valve
Thread or glue an isolation valve onto the vertical outlet.
This allows the standpipe to be isolated when not in use.
5. Fit the Standpipe
Install the vertical standpipe riser (PVC or poly).
The height depends on use:
Sampling or dosing: ~1 m high
Filling or flushing: ~1.2–1.5 m for ergonomic access
At the top, install:
A non-return valve if required
A camlock or threaded hose outlet
Optionally, a pressure gauge
6. Seal and Test
Use PTFE tape or thread sealant on all joints.
Allow adhesive joints to cure (15–30 min minimum).
Repressurize slowly and check for leaks.
7. Safety & Labeling
Clearly label the standpipe (“Bore Standpipe – Do Not Drink”).
If used for dosing (e.g., BoreSaver or chlorine), fit a backflow prevention device and comply with local water authority requirements.
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