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This 4-inch (100mm) double pointer semi-stainless steel pressure gauge is a practical indicator pressure gauge designed with two independent pointers: black pointer shows real-time working pressure, red pointer locks and records the peak pressure value automatically. It features dual scale marked up to 4 bar, which is the standard pressure gauge 4 bar for low-medium pressure systems. With durable semi-stainless steel bezel and brass thread connection, it works perfectly as a reliable oil pressure test gauge for hydraulic equipment, oil pipelines, heating boilers and air pressure systems.
Core Technical Specifications
Dial Size: 4" / 100mm large clear dial
Max Measuring Scale: 4 bar, standard pressure gauge 4 bar range
Pointer Design: Double pointers (real-time black pointer + peak recording red pointer)
Housing Material: Semi-stainless steel polished outer bezel, anti-rust and wear-resistant
Accuracy Class: CL 1.6 industrial precision
Thread Connection: Standard brass male thread for easy installation
Core Function: Indicator pressure gauge with peak pressure memory, professional oil pressure test gauge
Key Product Advantages
Unique double pointer design separates real-time pressure and maximum pressure reading. The red pointer stays at the highest pressure point automatically, so technicians can quickly check pressure surge without extra recording, ideal for pressure inspection work.
Standard 4 bar full scale perfectly matches low-pressure equipment, widely compatible with heating, water supply and light hydraulic systems.
Semi-stainless steel polished rim resists workshop scratches and light corrosion, extending service life compared with ordinary black plastic housing gauges.
Stable internal sensing structure delivers consistent precise readings, making it a trusted oil pressure test gauge for hydraulic pumps, lubrication circuits and oil pressure testing equipment.
Large 100mm dial with clear dual markings (mWS / bar) ensures easy reading even from a distance in dim industrial environments.
Robust brass thread fitting avoids leakage during long-term pressure testing and monitoring.
Wide Application Scenarios
Hydraulic stations and lubrication pipelines: Used as professional oil pressure test gauge to test and record oil pressure fluctuation
Heating boilers, water supply pipes, gas pipelines: Matched pressure gauge 4 bar for low-pressure daily monitoring
Air compressor auxiliary pipelines, small pressure vessels
Mechanical equipment pressure inspection and regular maintenance recording
Oingdao DaZeFengYang MeterWelding lnstruments Co, Ltd. is one professional pressure gauge and hardware tools
manufacturer, who is also one member of China National Hardware Association.
Together with our highly skiled technical experts, we have put an effort to meet the quality of pressure gauge as ... Oingdao DaZeFengYang MeterWelding lnstruments Co, Ltd. is one professional pressure gauge and hardware tools
manufacturer, who is also one member of China National Hardware Association.
Together with our highly skiled technical experts, we have put an effort to meet the quality of pressure gauge as ...
