Start Connector & Off-Take Valve with Grommet
Start connector and off-take valve with grommet for connecting lateral tubing, dripline or drip tape to the PE main pipe; for 16 and 20 mm laterals, with or without a valve.
- Connects a lateral to the PE main pipe
- Sealing grommet in the hole in the main
- Plain and valved versions
- For 16 and 20 mm laterals
- Polypropylene body
Key Specifications
- Product code
- P149
- Material & grade
- PP
- Outside diameter
- 16–20 mm
- Applications
- Irrigation & agriculture
- Dimensional options
- 4 rows in the specification table
What a start connector and off-take valve are
In drip irrigation, every row of lateral tubing or drip tape has to connect to the PE sub-main or main. The start connector does this: a hole is made in the main, a rubber sealing grommet goes into the hole and the connector's stem is pushed into the grommet. The other end of the connector takes the lateral.
The off-take valve is the same part with a small valve on it, so each row can be switched on and off on its own. Our catalogue notes that the part is fitted by drilling into the PE main pipe, so the hole size must match the grommet.
Sizes, fitting and ordering
Our rows cover the start connector and off-take valve for 16 and 20 mm laterals. Make the hole in the main with a punch or a special drill sized to the grommet, and pull the shavings out of the pipe.
In your enquiry give the lateral diameter, the type (plain or valved) and the quantity. The number of start connectors equals the number of rows; allow a few spares for repairs.
Drilling and fitting tips
Make the holes on the top of the main, or slightly to the side, so sediment at the bottom of the pipe does not enter the laterals. The hole spacing must match the crop row spacing; mark the positions on the pipe before drilling.
Seat the grommet fully in the hole before pushing in the connector stem. If a hole ends up oversized, rather than trying to seal it, make a fresh hole a little to one side and close the old one with a goof plug.
Start Connector & Off-Take Valve with Grommet — Technical Specifications
Wall thickness and weight are calculated from the standard series and are approximate; final values are confirmed in the quotation.
| Outer Diameter (mm) | Type |
|---|---|
| 16 | Start connector |
| 16 | Off-take valve |
| 20 | Start connector |
| 20 | Off-take valve |
Start Connector & Off-Take Valve with Grommet — FAQ
What is a start connector for?
For connecting lateral tubing, dripline or drip tape to the PE main.
What is the difference from the off-take valve?
The off-take valve has a small valve that switches each row on and off.
What does the grommet do?
It sits in the hole in the main and prevents leaks.
Which lateral size is it for?
16 and 20 mm lateral tubing.
