CE Certification 100mm Mechanical Pressure Gauge from China Suppliers – Stainless Steel Low-Pressure Indicator Factory Supplier, Suppliers

Introducing our premium low-pressure diaphragm all-stainless steel pressure gauge, an essential tool for precise measurement of low-pressure, micro-pressure, and vacuum media. Manufactured in China, this instrument reflects our commitment to high-quality engineering and advanced technology, Engineered with a corrugated diaphragm as its primary elastic sensing element, our pressure gauge features a robust casing and key components crafted entirely from stainless steel. This design is ideal for monitoring low-pressure gases or liquids that are corrosive to copper alloys and standard carbon steel, ensuring durability and reliability in demanding environments, When pressure is applied to the stainless steel corrugated diaphragm, it undergoes elastic deformation. This deformation is then amplified and converted through an internal transmission mechanism, comprising a linkage and gear system. The result is a clear visual display of pressure readings as the pointer rotates on the dial. For negative pressure scenarios, the diaphragm compresses, and the pointer indicates the corresponding negative value, As one of the leading suppliers in the industry, our factory prioritizes precision and quality. Trust our low-pressure diaphragm stainless steel pressure gauge to deliver accurate measurements and withstand harsh conditions. Perfect for various applications requiring reliable pressure monitoring

Product Description

Product Specifications
CaseStainless steel
Size100mm (4")
Ring (Cover)Stainless steel
WindowGlass
PointerAluminum Alloy, Black Finished
ConnectionStainless steel
Connection LocationLower
Thread1/2"NPT
Element (Bourdon Tube)Stainless steel
MovementStainless steel
Dial PlateWhite Aluminum with Black Graduations
Core Characteristics and Advantages
01
High sensitivity and accurate measurement
Compared to Bourdon tubes, corrugated diaphragms exhibit greater deformation in low-pressure ranges, making them extremely sensitive to minute pressure changes. They are particularly suitable for measuring pressure ranges of 0~40 kPa, or even lower (e.g., 0~1 kPa).
02
Wide media compatibility
Suitable for most non-strong oxidizing, non-solidifying, and non-crystallizing corrosive media. For high-viscosity or easily crystallizing media, models with open flanges or diaphragm isolators can be selected to prevent clogging.
03
Excellent sealing performance and multiple connection options
It offers excellent sealing performance, suitable for applications requiring prevention of media leakage or external environmental intrusion. It provides various interface options including threaded connections, flange connections, and clamp connections, allowing for flexible installation.
Typical Application Fields
Ventilation and Air Conditioning Systems
Measuring positive and negative pressure in ductwork and differential pressure on filters.
Environmental Protection and Flue Gas Treatment
Monitoring micro-pressure or negative pressure in dust collectors, desulfurization towers, and combustion furnaces.
Gas Transportation and Piping
Monitoring low-pressure pipeline pressures for gases such as natural gas, biogas, and compressed air.
Medical and Laboratory Equipment
Pressure monitoring in sterilizers, biochemical incubators, and gas supply systems.
Industrial Process Control
Measuring micro-positive pressure or vacuum in reaction vessels and fermenters in the chemical, pharmaceutical, and food and beverage industries.
Fire Protection and Building Automation
Pressure monitoring of positive pressure ventilation and smoke exhaust systems.
Frequently Asked Questions
Q What pressure ranges is this gauge designed to measure?
This gauge is specifically designed for low-pressure measurement, covering ranges from 0~40 kPa and even as low as 0~1 kPa. Its corrugated diaphragm element provides far greater sensitivity in low-pressure ranges compared to traditional Bourdon tube gauges, making it ideal for micro-pressure and micro-vacuum applications.
Q What materials are used in this pressure gauge's construction?
The case, ring (cover), connection, Bourdon tube element, and movement are all made of stainless steel for corrosion resistance and durability. The window is glass for clear visibility, the pointer is black-finished aluminum alloy, and the dial plate is white aluminum with black graduations for easy reading.
Q What types of media is this gauge compatible with?
The gauge is compatible with most non-strong oxidizing, non-solidifying, and non-crystallizing corrosive media. For high-viscosity or easily crystallizing media, models with open flanges or diaphragm isolators are available to prevent clogging and ensure continued reliable performance.
Q What connection types and thread standards does this gauge support?
The gauge features a standard 1/2" NPT lower threaded connection. Beyond threaded connections, it also supports flange and clamp connection options, enabling flexible installation across a wide range of industrial piping systems and process equipment.
Q Is this gauge suitable for HVAC and building automation systems?
Yes. This gauge is widely deployed in ventilation and air conditioning systems for measuring positive/negative duct pressures and filter differential pressures. It is equally suited for fire protection applications, including monitoring positive pressure ventilation and smoke exhaust systems in building automation environments.
Q Can this gauge be used in chemical, pharmaceutical, or food processing industries?
Yes. The gauge is well-suited for industrial process control in the chemical, pharmaceutical, and food and beverage industries. Its stainless steel construction, excellent sealing performance, and high sensitivity make it reliable for monitoring micro-positive pressure or vacuum conditions in reaction vessels and fermenters.

Related Products