Product Overview

TheMechanical Differential Pressure Controller NT30B is designed to monitor and control the pressure difference between supply and return pipelines in water and oil systems. It automatically regulates differential pressure to help maintain stable system operation and improve equipment reliability.

The controller utilizes high-sensitivity mechanical pressure sensing elements on both pressure ports. When the differential pressure exceeds or falls below the preset value, the internal switching mechanism is activated to control connected equipment such as motorized valves, ensuring the system operates within the desired pressure range.

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Operating Principle

The Mechanical Differential Pressure Controller NT30B Series is commonly used in water and oil circulation systems to regulate the pressure difference between supply and return pipelines.

A typical installation is on the bypass pipeline near the system water or oil pump.

When the pressure differential between the two ends of the pipeline increases or decreases beyond the controller’s preset value, the controller actuates the connected valve:

• When the pressure difference increases beyond the set point, the valve opens further.
• When the pressure difference decreases below the set point, the valve closes accordingly.

This automatic regulation reduces the pressure difference between the supply and return pipelines, helping maintain stable system performance and ensuring normal equipment operation.

Technical Specifications

Note: The joint threads of the above controllers are all M12X1.25.
If imperial threads are required, the suffix “E” must be added after the model number (the commonly used imperial threads are 7/16-20UNF).

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Product Features

• Mechanical differential pressure control
• Designed for water and oil systems
• High-sensitivity pressure sensing elements on both pressure ports
• Accurate differential pressure monitoring
• Reliable mechanical switching mechanism
• Automatic control of motorized valves and other system equipment
• Improves system stability and operational reliability
• Suitable for continuous industrial operation
• Simple installation and maintenance

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Typical Applications

The Mechanical Differential Pressure Controller NT30B is widely used in industrial systems requiring differential pressure monitoring and automatic control, including:

• Water circulation systems
• Hydraulic systems
• Lubrication systems
• Oil circulation systems
• Pump bypass control
• HVAC systems
• Cooling water systems
• Industrial process control
• Mechanical equipment
• Building automation systems

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Working Function

The NT30B Series incorporates high-sensitivity pressure sensing elements on both sides of the controller.

When the pressure at either side changes, the sensing elements respond immediately, causing the internal switching mechanism to operate. The controller then sends a switching signal to control connected equipment such as:

• Motorized valves
• Pumps
• Control systems
• Other pressure-regulating equipment

This allows the system to automatically maintain the desired differential pressure for safe and efficient operation.

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Product Advantages

• High-sensitivity pressure detection
• Stable and reliable mechanical operation
• Automatic differential pressure regulation
• Suitable for water and oil applications
• Helps protect pumps and piping systems
• Supports stable system performance
• Durable design for industrial environments
• Easy integration into existing control systems

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Typical Installation

A common installation method is to mount the NT30B on the bypass pipeline near the circulating water or oil pump.

This arrangement allows the controller to continuously monitor the pressure difference between the supply and return pipelines and automatically regulate valve operation whenever the preset differential pressure is exceeded.

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Frequently Asked Questions (FAQ)

What is the Mechanical Differential Pressure Controller NT30B used for?

The NT30B is used to monitor and control the pressure difference between supply and return pipelines in water and oil systems, helping maintain stable system operation.

How does the controller regulate differential pressure?

When the measured pressure difference exceeds or falls below the preset value, the internal mechanical switching mechanism actuates connected equipment such as motorized valves to automatically regulate system pressure.

Where is the NT30B typically installed?

It is commonly installed on the bypass pipeline near a circulating water or oil pump to provide continuous differential pressure monitoring and control.

What equipment can the NT30B control?

The controller can operate various devices, including:

• Motorized valves
• Pumps
• Pressure control systems
• Other automatic control equipment

What industries can use the NT30B?

The NT30B is suitable for HVAC, industrial water systems, hydraulic systems, lubrication systems, cooling systems, and other industrial process applications.

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Why Choose the Mechanical Differential Pressure Controller NT30B ?

The Mechanical Differential Pressure Controller NT30B provides reliable differential pressure monitoring and automatic control for water and oil circulation systems. Featuring high-sensitivity pressure sensing elements, a durable mechanical switching mechanism, and dependable performance, it is an ideal solution for regulating system pressure, protecting pumps, and maintaining stable operation across a wide range of industrial applications.