Pressure Compensating (PC) Dripper
A pressure compensating emitter with a silicone diaphragm that holds discharge constant as line pressure changes.
RAL 5021 · semi-matt finishProduct introduction
How the Pressure Compensating (PC) Dripper is engineered, and which sub-assemblies protect the performance your customers actually buy.
A pressure compensating dripper contains a silicone diaphragm that flexes as the pressure rises. The diaphragm narrows the flow path just enough to keep the discharge constant, so the first and the last dripper on a lateral deliver the same volume.
The design originates from European drip irrigation practice. A precision inlet filter and a finely designed turbulent channel give a self-cleaning action, so the dripper suits hilly ground, long laterals and water sources carrying some solids. Anti-drain versions stop the flow when the system shuts down, which prevents back siphonage of soil.
Product images and technical drawings
Equipment photographs and engineering illustrations of the product construction.
Technical parameters
Reference values for the standard configuration. Final dimensions, speed and output are confirmed against your material, product drawing and target capacity.
| Item | Specification |
|---|---|
| Product type | Pressure compensating dripper, inline or online |
| Flow index | Down to 0.04 |
| Coefficient of variation | CV 3 percent or better |
| Anti-drain pressure | Flow stops between 0.01 and 0.03 MPa |
| Minimum filtration | 100 micron |
| Punch size | 2.9 mm for online versions |
| Materials | Virgin PE body, cover and silicone diaphragm, UV stabilised |
| Options | Inline or online, with or without silicone, pressure compensating take apart types |
Need a configuration outside this table? Send us your product drawing, resin and target output and BENK MACHINE will return a sized proposal with a budgetary price.
Technical advantages
Every sub-assembly below is selected to protect the performance your customers buy.
Constant discharge
The diaphragm compensates automatically, keeping flow uniform regardless of pressure variation along the lateral.
Self-cleaning channel
A wide turbulent path plus a precision inlet filter flushes debris through the dripper during operation.
Anti-drain option
On anti-drain versions the flow stops at low pressure, so soil is not drawn back into the dripper when the system shuts down.
Colour coded
The coloured cap identifies the flow rate at a glance, which simplifies field inspection and maintenance.
Wide range of flows
One to eight litres per hour covers most orchard, vineyard and row crop requirements.
Reliable quality
Manufactured from virgin plastic with a coefficient of variation of 3 percent or better.
Key benefits
- Constant discharge — The diaphragm compensates automatically, keeping flow uniform regardless of pressure variation along the lateral.
- Self-cleaning channel — A wide turbulent path plus a precision inlet filter flushes debris through the dripper during operation.
- Anti-drain option — On anti-drain versions the flow stops at low pressure, so soil is not drawn back into the dripper when the system shuts down.
- Colour coded — The coloured cap identifies the flow rate at a glance, which simplifies field inspection and maintenance.
Built to run
Material preparation, processing and downstream handling can be integrated into one turnkey scope from a single supplier.
Process flow
Each station is matched in capacity so the machine runs at the rated output without a bottleneck.
- Resin drying
- Injection moulding of body and cover
- Silicone diaphragm moulding
- Automatic assembly and welding
- Vision inspection of the diaphragm
- Bulk packing
- Insertion into the pipe or assembly to online type
- Field installation
Applications
Typical end uses for this product, based on the applications BENK MACHINE equipment already serves worldwide.
Hilly and sloping fields
Terrain where pressure varies considerably along a lateral.
Long laterals
Blocks where friction loss would otherwise reduce flow at the far end.
Subsurface drip
Buried systems where back siphonage must be prevented.
High value crops
Orchards, vineyards, berries and vegetables where uniformity drives yield.
Options and auxiliary equipment
Configure the machine for the market you sell into. Popular additions include:
- Colour coded caps per flow rate
- Custom flow rates on request
- Anti-drain and anti-siphon versions
- Bulk or boxed packing options
- Sample and pilot batches
- Private label packing
Why buy from BENK MACHINE
Extrusion specialists, not traders
BENK MACHINE designs and builds extrusion and drip irrigation equipment in Zhangjiagang with an in-house R and D and process team, so machine selection is matched to your resin and product instead of a catalogue number.
Evidence before shipment
Every machine is assembled and run in our works. You receive trial video, gauge and output records, and are welcome to attend the factory acceptance test.
Total cost, not lowest price
Energy efficient drives, permanent magnet motors and optimised heating reduce kWh per tonne, which usually matters more over five years than the initial purchase price.
Real commissioning support
Our engineers install, commission, train your operators and stay involved until the machine hits the specified output and quality on your material.
Spares and response
Critical spares are stocked for fast dispatch, and the Siemens Ethernet control platform allows remote diagnosis before a service visit is needed.
Upgrades as you grow
Co-extrusion, gauge control, automation and downstream equipment can be added later, protecting your original investment.
Frequently asked questions
The questions buyers ask most often about the Pressure Compensating (PC) Dripper.
What is the flow index and why does it matter?
What does anti-drain mean?
Can the dripper be cleaned?
Get a quotation for the Pressure Compensating (PC) Dripper
Tell us the product specification, target output and the country the machine will be installed in. We will reply with a sized configuration, a budgetary price and an indicative delivery time.
- Telephone
- +86 512 5896 1463
- Mobile / WhatsApp / WeChat
- +86 159 5096 2426
- kpm@benkpm.com
- Address
- No.20 Huatang Road, Economic Development Zone (South District), Zhangjiagang City, Jiangsu Province, China
Related products
BENK MACHINE · www.benkpm.com · Extrusion and drip irrigation equipment.