Injection Moulding Machine for Plastic Valves
Plastic ball, gate and check valves are made on horizontal injection moulding machines, with the body, ball, stem and handle moulded as separate parts in UPVC, CPVC, PP or PVDF. Machine size follows the largest body: its projected area, shot weight and core pulls for the bore. For UPVC and CPVC, barrel heat control matters most.
Selection for valves turns on the body mould, which carries the bore cores and union threads, and on a screw and barrel that will run PVC without burning it. Pratishna Engineers supplies horizontal injection moulding machines for plastic valve production and can recommend a set-up for your valve range.
Manufacturing Plastic Valves?
Send your valve drawings, bore sizes, material and monthly volume, and Pratishna Engineers will recommend a machine and quotation.
Machine Requirements for Plastic Valve Moulding
Valve parts differ in size and material, so the machine has to cover the body mould and run heat-sensitive PVC. The main points are:
- PVC-suited screw and barrel with corrosion-resistant surfaces
- Accurate barrel heating zones to stop UPVC and CPVC burning
- Hydraulic core pulls for the through bore and end sockets
- Unscrewing or collapsible cores for union nut threads
- Thick ball sections cored out to control sink
- Thorough purge when changing between PVC and PP
Recommended Machine for Plastic Valves
Small-bore valve bodies, balls, stems and handles can run on the E Series (75-180 T), often in multi-cavity moulds for the smaller parts. Larger bodies with union ends and several core pulls need more mould space and clamping force, which points to the C Series (140-320 T) or H Series (120-350 T). PVDF and PPH chemical valves are sized the same way, on their own temperature settings.
Not Sure Which Machine You Need?
Send your valve body drawing and mould details 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
- 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 KBPVC Pipes & Fittings Components & Machine Guide
A guide to PVC Pipes & Fittings components, covering elbows, tees, couplers, valves, end caps, saddles and threaded adaptors. It explains PVC-suited screw and barrel, core pulls and unscrewing moulds, sizing by pipe diameter, and how to match each part to a suitable machine.
Download PDFPDF · 218 KB
FAQs / Buyer Questions
Questions valve makers ask our engineers before choosing a machine.
Which Injection Moulding Machine Is Used to Make Plastic Valves?
A horizontal machine sized to the valve body. Small ball and check valves often sit in the E Series, while large-bore bodies with several cores move to the C or H Series. Stems and handles can share a smaller machine.Which Material Suits a Plastic Valve?
UPVC suits cold water and many plumbing lines, and CPVC handles hot water. PP, PPH and PVDF are chosen for chemical and corrosive media. Each needs its own temperature settings, and CPVC and PVDF have narrow processing windows.Can the Valve Body, Ball and Stem Run on One Machine?
They can, one mould at a time, if the machine covers the body mould. Many plants run bodies on a larger machine and keep balls, stems and handles on a smaller one, so assembly is not held up by mould changes.
What Does PVC Moulding Need From the Screw and Barrel?
UPVC and CPVC give off corrosive gas if they overheat or sit too long in the barrel. A PVC-suited screw with corrosion-resistant surfaces, a nozzle without dead spots and steady temperature control reduce burning and black specks.Can Pratishna Recommend a Machine for My Plastic Valve?
Yes. Share the valve type, drawings of the body and inner parts, material, part weights, mould sizes, core pulls and monthly volume, and Pratishna Engineers will recommend a suitable machine.Does the Machine Suit Other PVC Pipe and Fitting Parts Too?
Yes. Machines in this range can also mould pipe fittings, foot valves, tank connectors, threaded adaptors and end caps, depending on the mould size and core pulls each part needs.
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.
Talk to Our Engineers
Planning a New Injection Moulding Project?
Share your component, material, mould and production target. Our engineering team will help you identify the right machine configuration.
- Machine Sales
- +91 99690 38542
- Service Support
- +91 97689 28259
- Sales Email
- [email protected]