The pneumatic hand-operated valve is a manually operated pneumatic directional control valve. It switches the direction of the air flow by pushing or rotating the handle, enabling the start/stop or direction change of pneumatic actuating elements (such as air cylinders, vacuum suction cups, etc.). Its structure is simple and the operation is convenient. It is suitable for industrial scenarios without power supply or where emergency manual control is required.
2. Key Features
Manual priority: No electricity required. The valve core position can be directly controlled by the mechanical handle. It can still be operated even when power is off.
Compact design: Small in size, suitable for installation environments with limited space.
High reliability: The sliding valve structure is wear-resistant and has a long service life, suitable for high-frequency operations.
Multiple interface options: Supports standard interfaces such as G threads, NPT (e.g. 1/4", 3/8").
Safety protection: Optional dust-proof and explosion-proof (Ex d) versions are available, suitable for harsh working conditions.
3. Typical Application
Emergency Cut-off: Manually cut off the airflow in case of a sudden failure of the pneumatic system.
Equipment debugging: During installation and maintenance, temporarily control the movement of the cylinder.
Powerless area: Areas without electricity, such as mines and outdoor work sites.
Automated production line: As a backup redundant valve controlled by PLC.
Product Specifications





----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Frequently Asked Questions
Q1.Are you a factory or trading company?
We are proud manufacturers specializing in a vast array of products, including vacuum suction cups, vacuum suction cranes, column type cantilever cranes, robotic arms, palletizing robots, vacuum fixtures, vacuum suction cup end pickers, and comprehensive vacuum component system equipment. Our expertise extends to vacuum handling system integration equipment and beyond.
Q2.What size of board can the charging suction crane lift?
Wuxi Lizhi Vacuum Suction Cup Lifting Appliance Co., Ltd. offers a diverse selection of suction cranes, capable of lifting from 0.5t to 20t, perfectly catering to a wide spectrum of demands with unparalleled efficiency and reliability.
Q3.Can we customize according to the customer's product?
Absolutely! We provide a multitude of types and specifications. Should you not find an exact fit, our customization services are here to tailor solutions specifically to your product's requirements.
Q4.What fields can vacuum suction cranes be used in?
Our versatile vacuum suction cranes are employed across a broad spectrum of industries, including but not limited to home appliances, 3C electronics, building materials, food packaging, medical equipment, automotive parts, metallurgy, daily chemical products, rubber and plastic, sanitary ware, textiles, new energy, warehousing and logistics, and many more fields.
Q5.Does the equipment need to be assembled?
No assembly is required. The equipment is thoroughly debugged and ready for use right out of the factory, enabling you to lift any plate effortlessly with the crane hook.
Q6.Is the device easy to operate and convenient?
The rechargeable suction crane produced by Wuxi Lizhi stands out in the sheet metal industry, dramatically enhancing work efficiency and safety. Its user-friendly design ensures a remarkably convenient operation.
Q7.How can I get the price?
We typically respond with a quote within 24 hours of receiving your inquiry. Your prompt attention to our communication ensures the most accurate and timely pricing.
For urgent inquiries, please email us or reach out through other available channels to expedite the process and secure your quotation.
Quote.
Q8.Which is better, an unpowered suction crane or a rechargeable suction crane?
The unpowered suction crane by Wuxi Lizhi excels in whole board handling and loading/unloading, while the rechargeable version offers versatility for both whole boards and parts. This adaptability makes it exceptionally suitable for the dynamic demands of the sheet metal industry.
Q9.Does an unpowered suction crane require a vacuum pump?
The Wuxi Lizhi vacuum suction crane operates without a vacuum pump, harnessing an innovative internal circulation chamber to create the necessary vacuum effortlessly.
Q10.What are the safety devices of the suction crane?
21276d3a