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for conditioning of pipes for impact test as per IS 4984 and IS 12235 (Part 9).
International Equipments is a leading manufacturer, supplier and exporter of Digital Zero Degree Chambers - also called Conditioning Chambers, Low-Temperature Conditioning Baths or Pipe Pre-Conditioning Chambers - in India. Built at our Mumbai facility, our Digital Zero Degree Chamber is a precision low-temperature pre-conditioning chamber that holds plastic pipe samples (PVC, HDPE, corrugated PLB duct) at exactly 0°C before they are subjected to drop-weight impact testing, strictly as per IS 4984 and IS 12235 (Part 9).
Low-temperature impact testing is one of the most important QC tests for any plastic pipe that will be installed outdoors or in cold-climate service. PVC water pipes, HDPE water and sewerage pipes, and corrugated HDPE PLB ducts all become more brittle at low temperatures - and the relevant Indian Standards require impact testing at the worst-case low temperature (typically 0°C) to confirm the pipe can withstand impact loading in the coldest conditions it will encounter in service.
A Zero Degree Chamber - also called a Conditioning Chamber, Low-Temperature Chamber or Conditioning Bath - is a refrigerated laboratory chamber that maintains samples at a controlled low temperature (typically exactly 0°C, though some standards specify other low temperatures from −5°C up to +5°C) for a specified pre-conditioning period (typically 1 to 4 hours) before testing. The purpose is to ensure the entire pipe sample reaches uniform temperature equilibrium throughout its wall thickness before the impact test is performed.
Pipe impact testing is fundamentally a low-temperature test because plastics become more brittle as temperature drops. By pre-conditioning the sample at 0°C and then performing the impact test within seconds of removal from the chamber, the laboratory captures the worst-case impact behaviour - the real safety margin the pipe must demonstrate to be released for service.
Our Digital Zero Degree Chamber is a robust, bench-top refrigerated conditioning chamber designed specifically for pipe impact pre-conditioning duty. The 16 inch × 16 inch × 16 inch working chamber comfortably accommodates the standard 200 mm (8 inch) pipe samples used in IS 4984 and IS 12235 (Part 9) impact testing - large enough to condition multiple samples simultaneously for high-throughput QC.
Construction is heavy-duty: stainless steel (SS) inner bath for corrosion resistance and easy cleaning, mild steel (MS) outer body with powder-coated finish for long lab life. The refrigeration system uses a CFC-free compressor - environmentally responsible and compliant with international refrigerant regulations, giving faster pull-down to 0°C and tighter temperature control.
Standard 230 V / 50 Hz single-phase operation makes the chamber compatible with any standard Indian or export laboratory power point. Other chamber sizes are available on request.
The Digital Zero Degree Chamber is the first half of the IS 4984 / IS 12235 (Part 9) low-temperature pipe impact test workflow. The second half is the Impact Tester for Pipes - the drop-weight instrument that delivers the actual impact blow to the conditioned sample.
The Zero Degree Chamber pre-conditions the pipe sample at exactly 0°C for the specified time. The Impact Tester then drops a calibrated weight onto the conditioned sample from the specified height, recording whether the pipe cracks, splits or remains intact. We strongly recommend buying both instruments together - many HDPE, PVC and PLB duct QC laboratories invest in the matched pair as a single quotation, with one commissioning visit and one training programme covering both methods.
Contact International Equipments today for a personalised quotation. Tell us your typical pipe diameter range and the test standards you follow (IS 4984, IS 12235 Part 9, IS 14333, IS 14930) - our team will share pricing, delivery timeline and the matched Zero Degree Chamber + Impact Tester package option for the complete IS 4984 low-temperature pipe impact test workflow.
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