Injection Moulding Machine for Angle Cocks and Stop Cocks
Angle cocks and stop cocks are made on horizontal injection moulding machines, mostly in PTMT with POM or PP spindles and caps. The parts are small, so cavity count rather than part size sets the tonnage. Concentricity between the threads and spindle bore decides whether each cock passes its leak test.
Angle cock machine selection is about running many cavities evenly and keeping PTMT dry and stable from hopper to mould. Pratishna Engineers supplies horizontal injection moulding machines for angle and stop cock moulding and can recommend a configuration from your mould plan.
Manufacturing Angle Cocks?
Share your angle or stop cock models, cavities, material and output target, and Pratishna Engineers will recommend a suitable machine.
Machine Requirements for Angle Cock and Stop Cock Moulding
Angle cocks are small, threaded and pressure-tested, and they are often moulded several to a tool. Machine points to check:
- Injection pressure and shot control balanced across many cavities
- Dehumidifying dryer sized for continuous PTMT feed
- Accurate unscrewing core motion for small BSP threads
- Even mould temperature to hold spindle bore concentricity
- Short residence time when running POM spindles on small shots
- Platen space for multi-cavity moulds with unscrewing gear
Recommended Machine for Angle Cocks and Stop Cocks
A single angle cock is small, but a multi-cavity mould with an unscrewing gear train takes up platen space. Many angle and stop cock moulds suit the E Series (75-180 T). Higher cavity counts or larger stop cock bodies push up the clamp force, and then a C Series (140-320 T) machine, or an H Series (120-350 T) for bigger family moulds, fits better.
Not Sure Which Machine You Need?
Share your cavity plan and part weight for a machine recommendation.
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
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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 KBSanitary & Bathroom Fittings Components & Machine Guide
A guide to Sanitary & Bathroom Fittings components, covering taps, bib cocks, angle cocks, health faucets, showers, cistern fittings, traps and drains. It explains PTMT, POM, ABS and UPVC, leak-free threads and seats, and how to match each part to a suitable machine.
Download PDFPDF · 203 KB
FAQs / Buyer Questions
Questions faucet and valve makers ask about moulding angle cocks and stop cocks.
Which Injection Moulding Machine Is Used to Make Angle Cocks?
Usually an E Series horizontal machine, picked by the number of cavities and the total shot. Higher-cavity moulds and larger stop cock bodies may need a C or H Series machine.How Many Cavities Suit Angle Cock Moulds?
That depends on the part size, gating and the unscrewing layout. More cavities raise output but need more clamp force and a well-balanced runner so every cavity fills and packs the same.What Causes Leaks in Moulded Angle Cocks?
Typical causes are a thread or spindle bore that is out of concentric, flash on the seat, or weak PTMT moulded without proper drying. Check cavity-to-cavity variation, not only one sample.
Do POM and PTMT Parts Run on the Same Machine?
They can, with a full purge between them. POM must not be held hot in the barrel and PTMT needs drying, so plan each changeover. Running spindles and bodies on separate machines avoids frequent changeovers.Can Pratishna Recommend a Machine for My Angle Cock?
Yes. Share the part drawing or sample, material, part weight, mould size, cavities, thread type and monthly output, and Pratishna Engineers will recommend a suitable machine.Does the Machine Suit Other Faucet Parts Too?
Yes. Similar machines mould bib cocks, plastic taps, health faucet triggers, cistern fill valve parts and shower components, subject to each mould.
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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