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MH: Professional Aerospace Components Supplier

XAC MH MACHINING CO., LTD. , established in 1955, is a leading backbone enterprise within China's aerospace industry. The company has successfully developed China's first aviation gyroscopic instrument, its first missile autopilot system, its first aviation attitude and navigation system, and its first aviation flight director system. OEM ultra-precision machining for Medical, Energy, Space, Defense, Semiconductor, Oil & Gas etc.

Why Choose Us

Advanced Equipment

We are equipped with hundreds of world-leading manufacture and testing equipment from Germany, Switzerland, the United States, and Japan, like six-axis, five-axis, and four-axis CNC machines, sets of Zeiss CMM, high-precision testing benches etc.

ODM/OEM Services

From refractory metal materials to precision functional components and radar system products, we accept ODM/OEM orders. We provide a one-stop service from design to processing to surface treatment.

Quality Certifications

MH is certified by international standards including AS9100, ISO14001, and ISO45001, and possesses a CNAS-accredited laboratory and a comprehensive quality control system.

Global Market

Our products are exported to countries and regions including Europe, the United States, Russia, and Japan. Our products enjoy an excellent reputation among our customers.

Types

The products manufactured by our company primarily include the following types:

Jet Sensor

Our Jet Sensor is designed for precise fuel flow and pressure measurement in aviation fueling systems.

Oil Transfer Valve

Boats and ships rely on vent float valves to manage fuel vapor release, especially in confined spaces. Proper venting prevents pressure buildup that could lead to leaks or fire hazards.

Industrial Fuel Storage Tanks

Large fuel storage tanks at industrial sites use vent float valves to control vapor emissions and pressure. These systems are vital for preventing accidents and ensuring regulatory compliance.

Aviation Fuel Systems

In aircraft fuel systems, the vent float valve plays an indispensable role, primarily serving to achieve pressure equalization, control fuel vapors, and prevent fuel spillage during flight operations.

Overload Protection Valve Key Parameters

Model	FZF1-0200
Working Media	Fuel
Temperature Range	-40℃ to +70℃
Precise Pressure Relief	Protects against overpressure in the system
Size	2mm

Benefits of Overload Protection Valve

Prevents Tank Overfilling
Overload protection valves are designed to halt the flow of liquid once the fuel tank reaches its maximum capacity. A level sensor inside the tank can signal the valve to close automatically, which supports safe fuel delivery and protects the tank from excessive pressure.

Protects Against Oil Spills
Overload protection valves stop excess oil from spilling during delivery, which greatly reduces the risk of environmental contamination. This extra layer of protection helps avoid damage to nearby buildings.

Reduces Equipment Wear
Avoiding overfills reduces pressure on components like the pump and nozzle during fuel transfer, which can potentially extend the life of storage tank equipment and limit the need for repairs in the long run.

Improves Safety During Fuel Deliveries
By stopping excess oil from entering the tank, overload protection valves create a safer delivery process. Tank trucks connected via pipe and siphon systems rely on valves to control the flow, and a safe delivery limits the risk of an emergency situation caused by fuel spray or overflow.

Better Leak Detection
Valves support leak detection by helping to maintain steady fluid levels during fuel transfers. Sudden drops or inconsistencies can indicate a leak or a faulty sensor in the tank, prompting homeowners to take action.

Optimizes Fuel Flow and Calibration
An accurate calibration of the valve allows for better control of fluid transfer rates and flow measurement. The valve can be paired with sensors to monitor real-time conditions inside the tank.

Application of Overload Protection Valve

01.

Aviation Sector:

Aviation fuel systems designed to prevent overpressure during aircraft refueling operations.

02.

Automotive Sector:

Applied in braking systems, lifting mechanisms, and steering systems to ensure reliable operation under high-pressure conditions.

03.

Oil and Gas Industry:

Protects drilling, refining, and transportation equipment against damage caused by sudden pressure surges and overload conditions.

04.

Industrial Sector:

Used to protect pipelines, pumps, and storage tanks from damage caused by overpressure.

Vent Float Valve Key Parameters

Working Media	Fuel
Temperature Range	-40℃ to +70℃
Float Mechanism	Closes the valve when fuel level drops below 15mm
Low Leakage Rate	<10 mL/min when valve is closed
Compact Design	6mm, 12mm

Material

Both the body and float of the air release float valve are made of stainless steel, providing excellent strength and durability. These valves are suitable for high-pressure and high-temperature applications. Stainless steel offers outstanding corrosion resistance and maintains stable performance even in saline or harsh water environments. Under harsh operating conditions, the service life of stainless steel is significantly longer than that of plastic or brass.

Advantages of Vent Float Valve

Efficient Air Release: Quickly removes trapped air from the pipeline system to improve operating efficiency.

Reliable operation: Vent float valves are simple in design and require little maintenance, making them highly reliable and durable.

Versatile: Vent float valves are available in a range of sizes and materials, making them suitable for use in a wide range of applications and environments.

Easy installation: Vent float valves are easy to install and do not require special tools or equipment, making them an ideal solution for many applications.

Energy efficiency: Vent float valves can help reduce energy consumption by controlling the flow of water and preventing over-filling or overflow.

Application of Vent Float Valve

Automotive Fuel Systems

In cars and trucks, vent float valves prevent pressure buildup during fueling and operation. They help reduce evaporative emissions, which are a significant contributor to air pollution.

Marine Fuel Storage

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Installation Requirements

Select the correct valve size and connection type.

Install the vent float valve in a vertical position to ensure proper float movement and sealing performance.

Do not over-tighten. Over-tightening can crack the tank wall or distort the gasket.

Perform a pressure and sealing test after installation to confirm stable and reliable valve performance.

Customization Process

Communicate Needs

You can contact us via email at info@xacmfg.com to share your specific requirements, such as filtration grade, dimensions, or materials. This allows us to prepare an accurate quotation tailored to your needs.

Develop Solutions

Based on your requirements, we will create a customized solution and provide detailed design drawings along with a clear implementation plan.

Contract Confirmation

We will review the design plans and contract details together to ensure mutual understanding and agreement. This step guarantees clarity for both parties.

Manufacturing & Delivery

Once confirmed, we begin manufacturing and closely monitor progress to ensure timely production and delivery. This helps us maintain efficiency and meet deadlines.

Final Acceptance

We conduct a final acceptance inspection with you to confirm that the delivered products meet your quality standards and all technical specifications.

Ongoing Support

After delivery, we provide maintenance and technical support to ensure long-term reliability. This ensures your products consistently perform at their best.

Shipping and Delivery

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Our Certifications

Our manufacturing and quality systems meet strict aerospace standards

FAQ

Q: How does a vent float valve work?

A: It works based on buoyancy. When air accumulates, the float drops and opens the vent to release air. When liquid enters, the float rises and seals the vent opening, preventing leakage.

Q: How often should I inspect or maintain my vent float valve?

A: Check your vent float valve at least once a year. If you use it with chemicals or high pressure, inspect it every three to six months. Look for leaks, rust, or worn parts. Clean and replace parts as needed.

Q: What should I do if my vent float valve leaks?

A: First, check the seals and gaskets for damage. Tighten any loose fittings. Clean out dirt or debris. If the leak continues, replace the faulty parts or the whole valve. Always use parts that match your valve type.

Q: Why does my vent float valve make noise or chatter?

A: Noise or chattering often means the valve is too small, the pressure is too high, or the float moves too quickly. Try adjusting the float arm or lowering the pressure. If the problem continues, you may need a different valve size.

Q: Are vent float valves automatic or manual?

A: They are fully automatic. No external power source or manual intervention is required, as they respond directly to changes in air and liquid levels.