Non-PC & Adjustable Dripper
Fixed (non-PC) and adjustable drippers for drip watering of trees, landscaping and greenhouses on lateral tubing; sold in packs, technical reference ISO 9261.
- Fixed and adjustable drippers
- Fitted onto 16 and 20 mm lateral tubing
- Suit short lines and flat ground
- Adjustable type: turn the cap to change the flow
- Sold in packs; technical reference ISO 9261

Key Specifications
- Product code
- P143
- Reference standard
- ISO 9261
- Applications
- Irrigation & agriculture, Landscaping, Greenhouses
- Dimensional options
- 2 rows in the specification table
Fixed and adjustable drippers compared
A fixed dripper has a fixed flow path and gives a steady flow at a given pressure. It is simple and low-cost and suits short lines, flat ground and gardens. An adjustable dripper has a turning cap that raises or lowers the flow, or shuts the dripper off.
The adjustable type is useful where neighbouring plants need different amounts of water, such as landscaping with trees and shrubs side by side, or different pots in a greenhouse. In these drippers flow changes with pressure; for long or sloping rows a pressure-compensating (PC) dripper is a better choice.
Installation and ordering
The dripper is fitted on 16 or 20 mm lateral tubing: make a clean hole in the pipe with a hole punch and press the dripper's barbed stem into it. To carry water to the foot of a tree or into a pot, micro tubing can be taken from the dripper outlet.
In your enquiry give the type (fixed or adjustable), the flow you want and the quantity. The flow and number of drippers per plant are set by an irrigation designer from the water need and soil.
Preventing dripper clogging
Clogging is the most common dripper problem. To prevent it, filter the water with a disc or screen filter before it enters the network, open the line ends regularly for flushing and run plain water through the network for a few minutes after each fertiliser feed.
If a dripper clogs, the adjustable type can be flushed by opening its cap fully; the fixed type is usually replaced. Keep a few spare drippers for repairs during the season.
Non-PC & Adjustable Dripper — Technical Specifications
Wall thickness and weight are calculated from the standard series and are approximate; final values are confirmed in the quotation.
| Type |
|---|
| Fixed |
| Adjustable |
Non-PC & Adjustable Dripper — FAQ
How does an adjustable dripper work?
Turning the cap changes the flow path and so the flow.
Where does a fixed dripper suit?
Short lines, flat ground and gardens.
Which dripper is better on slopes?
A pressure-compensating (PC) dripper.
Which pipe is it fitted on?
16 or 20 mm lateral tubing.



