Introducing IBS's "Relief Valve (Blow-off Valve)"! Comprehensive Catalog
IBS Relief Valve Comprehensive
It has high precision cracking performance and excellent reproducibility. Its simple structure allows for a compact and lightweight design, accommodating a wide range of pressures from low to high.
We offer relief valves (pressure relief valves) that excel in high precision cracking performance and reproducibility, as well as high sealing performance, available in various types such as atmospheric open type, inline type, high-pressure type, and external pressure regulating type. With a simple structure, they are designed to be compact and lightweight. They accommodate a wide range of pressures from low pressure (3 kPa) to high pressure (4 MPa). These valves are widely used in general industries and have numerous applications in the medical field. *For more details, please refer to the PDF materials or feel free to contact us.*
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basic information
RA Series <Low Pressure Atmospheric Open Type> Body Material: Brass (Ni Plated), SUS316 Connection Size: R1/8 to R1” Maximum Operating Pressure: 1.62MPa Cracking Pressure: 3 to 1,080kPa (R1/8 is 3 to 970kPa) - RL Series <Low Pressure Inline Type> Body Material: Brass, SUS316 Connection Size: 1/4” to 1-1/4" (Inlet R × Outlet Rc) Maximum Operating Pressure: 1.62MPa Cracking Pressure: 3 to 1,080kPa (R1/4 is 3 to 970kPa) - RC Series <Deflector Cap Type (Low Pressure Atmospheric Open)> Body Material: Brass (Ni Plated), SUS316 Connection Size: R1/8 to R3/4 Maximum Operating Pressure: 1.62MPa Cracking Pressure: 30 to 1,080kPa - RHA Series <High Pressure Atmospheric Open Type> Body Material: Brass Connection Size: R1/8, R1/4 Maximum Operating Pressure: 6.8MPa Cracking Pressure: 1,000 to 4,200kPa Additionally, there are RM1 Series <External Cracking Pressure Adjustment Type>, RM2 Series <External Cracking Pressure Adjustment Type>, and RD Series <Made of Fluororesin PFA>.
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Applications/Examples of results
- General Machinery Milling machines, NC lathes, machining centers, lasers, water jets, boilers, various industrial machinery - Industrial Furnaces General industrial furnaces, heating furnaces, vacuum furnaces, combustion devices, constant temperature devices - Medical Devices Endoscope cleaning devices, oxygen concentrators, anesthetic machines, blood analyzers, body fluid testing devices, sterilizers - Analysis and Measurement Equipment Various analysis devices, component gas analysis, gas analyzers, gas detectors, environmental measurement equipment - Energy Home fuel cells, secondary batteries, gas engines, generators, wind power generation, solar power generation - Water (Liquid) Treatment Equipment Pure water generation devices, pure water recycling devices, reverse osmosis membrane purifiers, seawater desalination devices, commercial cleaning machines, chillers, dispensers, ultrasonic cleaners - Gas Generator Related Compressors, small pressure vessels, various gas generation devices - Others Oxygen capsules, gasoline dispensers, forklifts, glove box car wash machines
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We specialize in the development, manufacturing, sales, and import/export of fluid control equipment, providing products tailored to our customers' needs and offering the latest information. While these services are fundamentally expected from a company, they have often been difficult to realize. We will implement these detailed services through the strong network of our group. - Obtained ISO 13485 certification.

