Equipped with a function to prevent forgetting the final tightening! Mechanical fittings for stainless steel piping.
"Zetlock" is a mechanical type of pipe fitting developed for stainless steel piping. It features excellent corrosion and heat resistance, leveraging the characteristics of lightweight and strong stainless steel piping, making it a highly reliable fitting. A unique indicator that distinguishes between hand-tightening and final tightening allows for easy confirmation of any tightening omissions. 【Features】 ■ Reliable sealing ■ Strong connection ■ Prevention of construction errors ■ Prevention of forgetting final tightening (hand-tightening leak function) ■ Easy piping work *For more details, please refer to the PDF document or feel free to contact us.
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basic information
【Scope of Application】 ■Applicable Pipe Types ・JIS G 3448 (Stainless Steel Pipes for General Piping) Nominal Sizes 13 to 60Su ・JWWA G 115 (Stainless Steel Pipes for Water Supply) Nominal Sizes 13 to 50 ■Applicable Sizes ・Standard Products: Nominal Sizes 13 to 60Su, Nominal Sizes 13 to 50 ・Special Products: Nominal Sizes 20 to 60Su, Nominal Sizes 20 to 50 ■Operating Pressure Range ・0 to 1.0MPa (For use in the range of 0 to 2.0MPa, please consult separately.) ・Air is less than 0 to 1.0MPa ■Operating Temperature Range ・Standard Products: 0 to 100℃ ・Special Products: 0 to 130℃ ■Applicable Water Quality ・Water quality standards related to ministerial ordinances (Ministry of Health, Labour and Welfare), water quality guidelines for refrigeration and air conditioning equipment Referencing the "Japan Refrigeration and Air Conditioning Industry Association" and Stainless Steel Association water quality guidelines ■Applicable Air Quality: Compressed Air Quality Grade JIS B 8392-1 Level 2 (Oil Content: Approximately 0.1ppm) *For more details, please refer to the PDF document or feel free to contact us.
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Applications/Examples of results
【Usage】 ■Standard products: Water supply, hot water, cold water, cooling water, air ■Special products: Steam return pipes, high-temperature water *For more details, please refer to the PDF document or feel free to contact us.
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Company information
Our company is a young organization established on August 1, 2024, as a separate entity from Protearial Co., Ltd.'s piping equipment business. However, its roots can be traced back to Tobata Casting Co., Ltd., which was founded in 1910. When we launched our first product that same year, we cast it with the wish for "greater strength, smoother surfaces, and more beautiful curves," giving rise to the "Hyotan" mark. For over 100 years, we have continued to produce cast products under the testament of tradition and trust. Today, we manufacture and sell not only fittings and valves but also sealed diaphragm expansion tanks, semiconductor flow control devices, and cold water supply equipment. Furthermore, we take pride in our comprehensive capabilities, which improve on-site conditions through our technical expertise, support systems, and quality control measures, enabling us to meet societal needs such as efficient energy use and the realization of a safe and secure society. Although we are a young company, we cherish tradition while continuously providing new value to the industry in line with customer needs and market changes. We are committed to making efforts to meet our customers' expectations in the future, and we sincerely hope for your continued support.