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Hirata Relief Safety Valves for Gas, Steam, and Liquid Applications

Welcome to Nichiboku's industrial Blog

Introduction

In the world of industrial pressure systems, safety is paramount. When overpressure occurs in boilers, pipelines, or process vessels, the risk to equipment and personnel rises sharply. Hirata Valve Industry, a leader in Japanese valve technology, offers a comprehensive line of Hirata Relief Safety Valves designed to prevent such incidents—serving as the final line of defense with precision, durability, and efficiency.


Silver valve against dynamic blue and red background. Text: "HIRATA VALVE INDUSTRY SAFETY RELIEF VALVES" and logo on left. Energetic feel.
Hirata relief safety valves: Durable, versatile, and essential for industrial applications, showcasing a range of material and size options for optimal performance.

Precision-Engineered Safety Valves for Industrial Applications

Hirata’s Relief Safety Valves are engineered to protect pressure vessels and piping systems by preventing internal pressure from exceeding preset values. These valves are a trusted solution for critical sectors where pressure control is vital—whether in gas lines, steam systems, or liquid processing facilities.

Key Features of Hirata Relief Safety Valves

  • Broad Media CompatibilitySuitable for air, inert gases, steam, and various liquids, with seat and trim materials optimized for each application medium.

  • Reliable Actuation Mechanism"Pop" action guarantees quick opening above the setpoint, followed by stable reseating after the blowdown, helping reduce product losses.

  • Service-Specific ConfigurationsChoose from metal or soft seats (PTFE, NBR, FKM, EPDM) and tailored trims to suit specific leakage, temperature, or cleanliness requirements.

Production Range

Item

Range / Options

Size

8A–250A (varies by valve type)

Body Materials

Carbon steel, stainless steel, cast iron (others on request)

End Connections

Threaded or flanged per standard (Rc/NPT/BSP, JIS/ASME)

Seat/Trim

Metal seat (SS) or soft seat (PTFE, NBR, FKM, EPDM) matched to medium and temperature

Service

Gas/air, steam, liquids (utility/process)

Technical Advantages of Hirata Valve Industry Safety Valves

Hirata Valve Industry is renowned for delivering high-quality safety valves rooted in Japanese manufacturing excellence. With a wide range of sizes, configurations, and material options, Hirata ensures that each valve aligns perfectly with your operating conditions. Whether you require rugged construction for utilities or clean-service compatibility for sensitive processes, Hirata has the solution.

Example of Safety Valve Piping in Process Systems

Understanding the placement of vacuum and pressure safety valves is crucial for ensuring proper system design and operation. Below is a visual example of a typical safety valve piping layout.

Safety valve piping diagram on yellow background. Gray pipes and valves with gauges labeled: Stop Valve, Pressure Reducing Valve, Safety Valve.
Industrial Diagram: Hirata Valve Industry's safety valve piping system highlights effective steam control and safety measures. The layout features stop valves, a pressure-reducing valve with dual gauges, and a safety valve for overpressure protection, alongside an auxiliary bypass line.


Optimized Solutions for Gas, Steam, and Liquid Pressure Systems

These valves are indispensable across global industries—from power plants to process industries—ensuring operational safety while minimizing unplanned shutdowns.


Contact Nichiboku Technical Support

Connect with Nichiboku's expert support team to explore tailored safety valve solutions for your application.📩 Nichiboku Ltd. – www.nichiboku.com📞 Contact us to request specifications or schedule a consultation with our technical team



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