DN50 Aluminum Alloy Ball Valves

 

The DN50 Aluminum Alloy Ball Valve combines a lightweight aluminum body with flexible actuation choices-manual, single-acting pneumatic, or double-acting pneumatic-tailored to application needs. Engineered with a preloaded Belleville spring-loaded seal seat, the valve continuously sustains optimal sealing pressure while autonomously compensating for seal-face degradation and changes in both operating temperature and pressure differentials.

Actuation Type	Model
Manual	ATL48351701
Single-Acting Pneumatic	ATL48351702
Double-Acting Pneumatic	ATL48351703

 

 

Parameter	Specification
Nominal Diameter	DN50
Valve Body Material	Aluminum Alloy
Working Pressure	1.0 MPa
Temperature Range	-40°C to +80°C
Seal Material	Fluorosilicone Rubber
Actuation	Manual, Single-Acting Pneumatic, Double-Acting Pneumatic
Control Air Pressure	0.4 MPa for pneumatic models

 

 

 

Q1: What media are suitable for this valve?

A1: This valve is suitable for petroleum-based hydraulic oils, lubricants, pneumatic system media, and some mildly corrosive fluids. For specific media compatibility, please verify against fluorosilicone rubber seal properties. It is not recommended for strong acids, strong alkalis, or high-temperature steam applications.

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Q2: Is the aluminum alloy body corrosion-resistant?

A2: The aluminum alloy body is surface-treated (e.g., anodized or coated) to provide moderate resistance to atmospheric and mild chemical corrosion. For marine environments or highly corrosive conditions, additional evaluation or a stainless steel body option is recommended.

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Q3: How do I choose between manual, single-acting pneumatic, and double-acting pneumatic models?

A3:

Manual: Suitable for on-site local operation without an air supply.

Single-acting pneumatic: Ideal for fail-safe closing (close on loss of air pressure).

Double-acting pneumatic: Suitable for fully automated bidirectional control where fail-safe is not required.

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Q4: Does the single-acting pneumatic model close automatically on air loss?

A4: Yes. The single-acting model (ATL48351702) uses an internal spring to automatically close the valve when Port A is exhausted (air supply lost), providing fail-safe protection.

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Q5: How does the valve handle abnormal internal pressure buildup?

A5: The valve cavity features an automatic pressure-relief design. When excessive pressure builds up inside, it is released automatically to prevent damage to the body or seals, enhancing operational safety.

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Q6: What is the recommended replacement interval for seals?

A6: Replacement intervals depend on operating frequency, media temperature, and working pressure. Generally, we recommend inspecting seal wear every 12–24 months during routine maintenance and replacing the fluorosilicone rubber seals as needed.

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Q7: Is this valve suitable for high-frequency switching applications?

A7: Yes, but attention should be paid to the actuator response speed and seal wear resistance. For high-frequency duty, the double-acting pneumatic model is recommended, with shorter maintenance inspection cycles.

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Q8: Is there a flow direction requirement for installation?

A8: The valve features bidirectional sealing. However, for optimal sealing performance, we recommend installing according to the flow arrow marked on the body. If no arrow is present, the valve can be installed in either direction, provided the media is clean.

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Q9: What are the requirements for the control air supply?

A9: Pneumatic models require a control air pressure of 0.4 MPa. The air supply should be dry and clean (a filter-regulator is recommended) to prevent contaminants from affecting actuator performance.

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Q10: Can the valve operate below -40°C or above +80°C?

A10: Not recommended. The designed temperature range is -40°C to +80°C. Operation outside this range may cause seal failure or degradation of valve body material properties. Please consult us for custom options if extended temperature range is required.

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Q11: Are repair kits or spare parts available?

A12: Yes, we offer maintenance seal kits (including fluorosilicone rubber seals and Belleville spring washers). Please refer to the product parts list or contact our sales representative for specific kit part numbers.

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