Nagano Keiki Maximum Pressure Indicator MT31 20MPa(200Kgf/cm²)
Nagano Keiki MT31 Maximum Pressure Indicator / Peak Hold Gauge
Ensure the accuracy and health of your hydraulic and pneumatic systems with the Nagano Keiki MT31, a professional-grade maximum pressure indicator. This gauge is engineered to not only display the current system pressure but also to mechanically lock and hold the highest (peak) pressure value encountered during operation or testing. This “peak hold” function is critical for diagnosing intermittent pressure spikes, verifying system performance, and conducting safety checks where transient pressures might be missed by a standard gauge.
Crafted by Nagano Keiki, a trusted name in Japanese precision instrumentation, the MT31 combines rugged durability with exceptional accuracy. The large, clear dial with high-contrast markings ensures easy reading even in challenging industrial environments. After recording the maximum pressure, the indicator can be easily reset using the manual reset knob, preparing it for the next monitoring cycle.
Key Features & Benefits:
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Maximum Pressure Indication: Mechanically captures and holds the highest pressure point, preventing the needle from falling back. Essential for detecting pressure surges and verifying maximum system load.
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High Pressure Range: Ideal for demanding industrial applications with a scale of 20 MPa and an equivalent 200 kgf/cm² (kilogram-force per square centimeter) for user convenience.
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Robust & Reliable Construction: Built with a durable case and internal mechanism to withstand vibrations and pulsations, ensuring long-term stability and accuracy.
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Excellent Readability: Features a large, white-on-black dial with bold numerals and a red maximum pointer for clear, unambiguous readings.
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Manual Reset Function: Simple and quick reset via a knob on the front bezel, allowing for repeated testing and monitoring cycles.
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Seiko (Japanese Make) Quality: Manufactured by Nagano Keiki, guaranteeing a high standard of precision and reliability.
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Versatile Applications: Suitable for a wide range of industries including hydraulic machinery, press machines, plastic molding equipment, construction equipment, and pressure vessel testing.
Technical Specifications:
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Model: MT31
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Brand: Nagano Keiki
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Type: Maximum Pressure Indicator / Peak Hold Gauge
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Pressure Range: 20 MPa
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Dual Scale: 20 MPa (Primary) and 200 kgf/cm²
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Accuracy: Typically within ±1.6% of full scale (FS) for Nagano Keiki gauges of this type. (Confirm specific model documentation for exact value).
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Connection Size: Standard R (PT) or G (PF) thread, typical size 1/4″ or 1/2″ BSP/NPT. (Please verify specific connection for your unit).
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Reset Method: Manual (Knob-operated)
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Mounting: Standard bottom or lower back connection.
Who Needs This Product?
The Nagano Keiki MT31 is an indispensable tool for:
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Hydraulic Engineers & Technicians
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Maintenance and Reliability Teams
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Plant and Facility Managers
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Quality Assurance and Testing Laboratories
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Original Equipment Manufacturers (OEMs) of machinery
Applications Include:
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Monitoring maximum pressure in hydraulic power packs and cylinders.
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Testing and commissioning of new hydraulic systems.
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Troubleshooting pressure-related faults in industrial machinery.
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Safety inspections and preventive maintenance schedules.
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Calibration and verification of system pressure settings.



























