Pneumatic Shut-Off Valve: Emergency Cut-off Function + Hard Sealing Type + Overflow and Pressure Relief + High Reliability

Functional Description of Zoomlion Hubei Chengl Li 5160TXS Pneumatic Shut-Off Valve (EQ22-50, for Dongfeng Tianjin Sanitation Vehicles)
This pneumatic shut-off valve is a core control component specifically designed for Dongfeng Tianjin sanitation vehicles (sweeper-scrubber trucks, sprinkler trucks, etc.), focusing on three core requirements: "precise fluid control, durable adaptation, and safety & reliability". Its specific functions are as follows:
1.Intelligent On-Off & Pressure Regulation: Driven by pneumatics, it can quickly turn the water circuit on/off with a response time of ≤0.5 seconds. It has a built-in pressure balance structure, adapting to a working pressure range of 0.2-1.0MPa, which can automatically cope with water pressure fluctuations and prevent pipeline damage. It also supports manual emergency operation—when the pneumatic system fails, the valve can be manually opened/closed via an eccentric shaft to ensure basic operations.
2.Durable Adaptation for Sanitation Scenarios: The valve body is made of stainless steel (304/316L) with an anti-corrosion coating on the surface, improving resistance to sewage and acid-base corrosion by more than 5 times, with a service life of up to 8000 hours. The valve seat adopts a hard-seal structure (hard alloy overlay welding), which can withstand the erosion of sediment-containing water flow, with a leakage rate of ≤0.01% of the rated flow. It supports two modes: high-pressure cleaning (full opening with a flow rate of 80m³/h, suitable for road flushing) and spray dust suppression (atomization particle size ≤50μm, suitable for dust control), meeting cleaning needs in multiple scenarios.
3.Safety Protection & Low Maintenance: Equipped with a limit switch, it provides real-time feedback on the valve's on-off status to prevent misoperation. It uses a double-acting spring-return pneumatic actuator—when the air supply is interrupted, the valve closes automatically to avoid water loss or pipeline burst. It has a built-in self-cleaning function, which purges the valve cavity through reverse air flow to reduce impurity deposition. The modular design allows quick separation of the valve body and actuator; maintenance does not require pipeline disassembly, shortening maintenance time by 60%.

About Us

Changsha Jieermei Sanitation Machinery Equipment Co., Ltd. (JEM) is a professional manufacturer dedicated to upper-mounted parts for sanitation vehicles, covering municipal sanitation cleaners, road sweepers, and related equipment.

Our Strengths

Core Products:Suction nozzle assemblies, cleaning mechanism assemblies, centrifugal fans.

R&D & Customization:Equipped with R&D and technical capabilities to develop/customize functional parts based on the specific characteristics of your sanitation vehicle chassis.

Modular Kits Supply:Provide pre-assembled and debugged modular kits (including nozzles, cleaning mechanisms, and all required components).

Key advantage: High adaptability, reducing OEMs’ assembly time and enabling focus on cost optimization & after-sales service.

Order Flexibility:Support small-batch, high-variety, and fully customized orders.

Established in 2013 in Changsha, known as the "capital of construction machinery," Changsha Jieermei Sanitation Machinery Equipment Co., Ltd. specializes in cutting-edge municipal sanitation cleaning vehicles, road sweepers, and related equipment parts.

With a dedicated core technology team of 11 experts, Jiermei has achieved remarkable milestones, securing 5 invention patents and over 40 utility model and appearance patents. Every component, from nozzles to cleaning mechanisms, showcases exceptional craftsmanship, earning accolades such as the Technical Innovation Award and Quality Excellence Award from our esteemed clientele.

Embracing the era of intelligence, Jiermei leads the charge with advanced technologies. Intelligent manufacturing robotic arms enhance precision and efficiency, while our self-developed automated production line ensures top-notch product quality. Our array of fully automatic and semi-automatic equipment streamlines production operations for enhanced efficiency.

Jiermei adopts cutting-edge management practices, leveraging the Zhibang International ERP system for paperless, digital management, facilitating swift decision-making. Committed to excellence, we strictly adhere to ISO9001 standards, ensuring standardized services across the board.

Our expansive 6000㎡ modern facility houses 70 skilled employees equipped with state-of-the-art infrastructure. Specializing in sanitation vehicle nozzles, fans, and cleaning mechanisms, our team is dedicated to providing comprehensive support services. With a legacy of excellence, superior quality, high efficiency, and a customer-centric approach, we extend a warm invitation to potential partners in sanitation vehicle production to join us in exploring new horizons. We eagerly await your visit for a firsthand experience and the opportunity for mutually beneficial collaboration.