HVAC diagram npvc63 means what equipment

NPVC63 that the pipe for the "non-polyvinyl chloride (NPVC)" material, diameter 63mm. that is to say that this pipe can not be used to contain PVC plastic composition of the material, it is PVC outside of the material, such as: "polyethylene" pipe, non-toxic, harmless, good impact resistance, high abrasion resistance, corrosion resistance, no scaling, wide temperature range, add the appropriate flame retardant to change the performance of flame retardant equipment.

NPVC is Non-PVC (Non-Plasticized Polyvinyl Chloride) abbreviation, also referred to as "non-PVC" or "non-PVC". It is an environmentally friendly and non-toxic new material, which is very popular in foreign countries, especially for pharmaceutical packaging and medical devices. The material is virtually free of polycyclic aromatic hydrocarbons (PAHs), which are cancer-causing chemicals.

The abbreviations for the various PVC materials are as follows:

Polyvinyl Chloride: PVC Common, toxic.

Non-Polyvinyl Chloride: NPVC Non-toxic, environmentally friendly.

Non-plasticized Polyvinyl Chloride:UPVC High hardness, high pressure resistance.