Ống 2 lớp ASAHI

OVERVIEW:

Double contained pipes are products of inner pipe (actual pipe) and outer pipe (protection pipe) combined together.
With this structure, even if liquid leaks due to breakage of the inner pipe, the fluid is received by the outer pipe and
scattering or leakage to outside can be prevented. You can identify a leakage directly and recover immediately
by using transparent PVC pipe for outer pipe. Double contained pipes are effective for safety and environmental
measures.

Revisions of the Water Pollution Prevention Act

Creation of a System Effective for Prevention of Underground Water Contamination in
Advance -(Enforcement date on June 1, 2012)

Law to revise part of the Water Pollution Prevention Act was enacted on June 14, 2011, promulgated on June 22, 2011, and enforced on June 1, 2012. Based on this law, new regulations are added to this Act to regulate the installers of facilities using and storing hazardous substances (*1) to follow the standard for structure, equipment and use method of underground penetration prevention, conduct regular inspections, and keep records of the results. (*1) Hazardous substances subject to the regulations are in total of 28 items (as of June 2013) regulated in Article 2 of the Ordinance of Water Pollution Act such as cadmium, lead and trichloroethylene.

Measures (Effective Use of Double Contained Pipe)

It is to prevent leakage to the floor surface, etc. by preventing leakage of hazardous materials from piping, etc. or checking any leakage easily. Because of this, it shall be a material/structure required for prevention of leakage from piping, etc. or a piping layout that is easy to check any leakage visually. In both cases, it shall be that any abnormality or leakage can be easily checked visually in regular inspections. Piping, etc. includes the piping main unit, fittings, flanges, valves and pump equipment where water containing hazardous materials would flow.

FEATURES AND STRUCTURE

1. Chemical Scattering Prevention

Making piping the dual design prevents chemical solutions from outflowing to outside even when the inner pipe is damaged, etc. Outer pipe is designed to withstand the full capacity (non pressure).

2. Visual Inspection is Feasible (Outer Pipe Transparent PVC)

Making outer pipe transparent PVC makes visual inspection done easily. Transparent PVC is available to the size of 200 mm (inner pipe 100 mm).

3. Expansion Measure (Elastic Slide Pipe)

Expansion/contraction amounts of outer pipe (outside temperature) and inner pipe (fluid temperature) are different. Inner pipe and outer pipe of ASAHI AV double contained pipes are independent to each other (not fixed), and expansion/contraction is absorbed with the outer pipe of elastic slide pipe.