Injection Moulding Machine for Small Irrigation Cocks
Small irrigation cocks, the quarter-turn shut-offs fitted on laterals, micro tubes and sprinkler risers, are produced from PP, glass-filled PP and POM on horizontal injection moulding machines. Cavity count, the plug or ball moulds and shot weight against barrel capacity set the machine size. Plug-to-body fit is the critical point, setting both turning effort and sealing.
For a part this size, selection is about accurate shots into multi-cavity body and plug moulds, and holding shrinkage steady on both so they mate. Pratishna Engineers supplies horizontal injection moulding machines for small irrigation cocks and can work out a set-up from your mould plan.
Moulding Small Irrigation Cocks?
Tell Pratishna Engineers the cock size, end type and the materials for body and plug, and get a machine suggestion for each mould.
Machine Requirements for Irrigation Cock Moulding
The plug has to turn by hand yet seal under pressure, so these points matter when choosing the machine:
- Repeatable shots across multi-cavity body and plug moulds
- Matched shrinkage between PP body and POM plug
- Round, flash-free plug bore with no parting line step
- Short, accurate core pulls for barbed or threaded ends
- Glass-filled PP option where ends carry threads
- Handle stops and detents filled without short shots
Recommended Machine for Small Irrigation Cocks
Small cocks are light parts, and their bodies, plugs and handles usually run in separate multi-cavity moulds. The E Series (75-180 T) covers most of these tools. A large body mould with glass-filled PP and several side cores may call for the C Series (140-320 T), while high cavity production moulds sit well on the H Series (120-350 T).
Not Sure Which Machine You Need?
Share the cock design and output target for a machine shortlist.
Why Choose Pratishna Engineers?
- Application-Based Machine Selection
- In-House Engineering & Manufacturing
- Multiple Machine Series
- Production-Focused Solutions
- End-to-End Technical Support
- Industry-Specific Solutions
- Machine Lifecycle Support
Injection Moulding Machine Buyer Resources
Download practical resources to help you select, size and specify the right machine.
Horizontal Injection Moulding Machine Selection Guide
A step-by-step guide covering the key inputs needed to select the right machine: product weight, projected area, number of cavities, plastic material, required clamping force, shot / injection capacity, mould dimensions, production quantity, cycle time and automation requirement.
Download PDFPDF · 265 KB
How to Calculate Clamping Force for an Injection Moulding Machine
A clear methodology that explains how clamping force is calculated, covering projected area, injection pressure, safety factor, number of cavities and material considerations.
Download PDFPDF · 363 KBAgriculture & Irrigation Components & Machine Guide
A guide to Agriculture & Irrigation components, covering drip emitters, sprinklers, lateral fittings, filters, nursery pots, crates and poultry equipment. It explains common materials such as PP, PE, POM and nylon, UV stabilisation, cavity planning, and how to match each part to a suitable machine.
Download PDFPDF · 222 KB
FAQs / Buyer Questions
What buyers of small cock moulds most often check with our engineers.
Which Injection Moulding Machine Is Used to Make Small Irrigation Cocks?
For most small cocks, the E Series is the starting point, since bodies, plugs and handles are light. Larger glass-filled bodies or tools with many cavities can move up to the C or H Series.Can Body, Plug and Handle Run in One Family Mould?
They can, but the three parts differ in wall and weight, so cavity balance and shrinkage are hard to hold together. Separate moulds often give a more consistent plug fit, especially when the plug is POM.Should the Cock Body Be Plain or Glass-Filled PP?
Plain PP is often enough for barbed cocks on low-pressure laterals. Glass-filled PP is chosen where threaded ends or higher pressures need more stiffness, and it calls for a wear-resistant screw and barrel.
Do POM Plugs Need Drying Before Moulding?
POM absorbs little moisture, but material stored open in humid weather can pick up surface moisture, so a short drying step helps. Residence time matters more, because overheated POM degrades and gives off gas.Can Pratishna Recommend a Machine for My Irrigation Cock?
Yes. Share drawings or samples of the body, plug and handle, materials, part weights, mould sizes, cavity counts and monthly output, and Pratishna Engineers will suggest suitable machines.Does the Machine Suit Other Drip and Sprinkler Parts Too?
Usually. Barb connectors, drip takeoffs, micro-sprinkler bodies and drip line end caps are similar in size, so the same machine can share time with small cock moulds.
Technical Disclaimer
Disclaimer: The information provided in this webpage is for general informational and educational purposes only. It is based on technical references and industry information available at the time of preparation and may be subject to change. It does not constitute engineering, technical, commercial or professional advice, nor does it constitute a quotation, specification, warranty or contractual commitment by Pratishna Engineers.
Actual injection moulding machine and process requirements vary according to the component design, material, mould, production volume, machine configuration and operating conditions. The information, examples, calculations and recommendations provided should be independently evaluated and verified for the specific application before making any equipment, process or production decision. Information obtained from third-party sources remains subject to the accuracy and limitations of those sources.
Limitation of Liability: Pratishna Engineers makes no representation or warranty, express or implied, regarding the completeness, accuracy or suitability of the information for any particular application. To the extent permitted by applicable law, Pratishna Engineers shall not be liable for any loss, damage, cost or consequence arising from reliance on or use of the information contained in this webpage. Final machine selection, configuration and application suitability should be confirmed with Pratishna Engineers based on complete and accurate project requirements.
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Planning a New Injection Moulding Project?
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