Diaphragm-type Back-suction Valve LK-9880

Product Overview

The diaphragm-type back-suction valve LK-9880 is a precision valve designed specifically for fluid-control applications. Its perfectly matched structure of the valve body and diaphragm ensures core performance characterized by clean, drip-free shut-off. The product accommodates adhesives across a viscosity range of 0–100,000 cP, supports multiple fluid-channel options, and is driven by a DC 24 V solenoid valve operating at 0.5 MPa air pressure. It meets the precise dispensing needs of automated packaging, electronic machinery manufacturing, biological experiments, and other scenarios, offering customized quotations and one-on-one solution pricing from the manufacturer.

Core Technical Parameters

1. Compatible adhesive viscosity: 0–100,000 cP
2. Drive air pressure: 0.5 MPa
3. Solenoid voltage: DC 24 V
4. Fluid channels: multiple options available

Key Performance Advantages

1. Precise, drip-free shut-off: The valve body and diaphragm are seamlessly integrated, and the unique diaphragm back-suction mechanism enables instant, accurate control upon shut-off, completely eliminating issues like stringing or dripping to ensure cleanliness and precision in dispensing operations.
2. Broad adhesive compatibility: Supports adhesives spanning the full viscosity range of 0–100,000 cP—whether low-viscosity liquids or high-viscosity pastes—providing stable, precise fluid control to meet diverse material requirements.
3. Flexible channel configuration: With multiple fluid-channel options, users can select the most suitable design based on adhesive characteristics and flow behavior, ensuring consistent fluid delivery and preventing dispensing deviations caused by improper channel selection.
4. Standardized drive configuration: Utilizing a standardized setup of a DC 24 V solenoid valve and 0.5 MPa air pressure, it integrates easily with most automated systems without additional modifications, reducing equipment adaptation costs.

Core Product Value

1. Quality assurance value: The drip-free shut-off provided by the diaphragm back-suction mechanism effectively prevents product defects caused by adhesive stringing or dripping, enhancing finished-product quality and yield while minimizing rework costs.
2. Broad adaptability value: Covering the entire viscosity range of 0–100,000 cP, it eliminates the need to switch between specialized valves for different adhesives, simplifying equipment configuration and lowering capital investment for multi-material production.
3. Customization flexibility value: With various fluid-channel options, users can choose the optimal channel based on adhesive properties and production needs, complemented by personalized manufacturer-provided solutions to deliver tailored dispensing strategies for specific applications.
4. Cost-control value: Precise shut-off minimizes adhesive waste, while the drip-free feature reduces equipment cleaning time and lowers the rate of defective rework, comprehensively cutting overall production costs.

Target Customer Groups

Manufacturers of automated packaging equipment, producers of electronic machinery, suppliers of biological testing devices, mobile phone electronics contract manufacturers, chip-packaging processors, COB encapsulation producers, and LED bead manufacturers

Typical Application Scenarios

1. Mobile electronics manufacturing: Enables precise dispensing during processes such as bonding motherboard components and sealing screen bezels, preventing adhesive overflow that could affect product appearance and performance.
2. Chip packaging operations: Provides stable, precise fluid control for pin fixation and protective adhesive application during chip encapsulation, ensuring seal integrity and reliability.
3. COB encapsulation production: Meets the demand for uniform, drip-free adhesive coating in COB encapsulation, enhancing the protective performance and stability of COB modules.
4. LED bead manufacturing: During procedures like bracket bonding and phosphor-dot application, precisely controls adhesive volume and dot morphology to guarantee light efficiency and consistency.
5. Automated packaging lines: Compatible with various general-purpose automated packaging systems, delivering reliable fluid-control solutions for component assembly in home appliances, automotive electronics, and other industries.
6. Biological testing equipment: Ensures highly accurate, drip-free fluid delivery during reagent dispensing and sample sealing, safeguarding experimental accuracy.

Solutions to Industry Pain Points

1. Addressing unclean shut-off issues: Traditional valves often produce stringing or dripping when shutting off, leading to surface contamination and inconsistent adhesive volumes. This product achieves precise, instant back-suction through its perfectly matched diaphragm and valve-body design, fully resolving these problems.
2. Improving insufficient dispensing precision: Some valves suffer from uneven dot sizes and irregular shapes due to suboptimal channel designs. This product offers multiple channel options, allowing users to select the best match based on adhesive characteristics, ensuring round, precise dots.
3. Tackling the challenge of handling multiple viscosities: Single-purpose valves typically cover only a narrow viscosity range, requiring frequent valve changes when switching adhesives—a costly and time-consuming process. This product covers the full 0–100,000 cP range, eliminating the need for frequent equipment replacements.
4. Reducing adhesive waste and cleanup costs: Dripping not only causes product defects but also leads to unnecessary adhesive consumption and increased cleaning labor. The drip-free design significantly cuts adhesive loss and lowers maintenance expenses.

Frequently Asked Questions (FAQ)

Q1: What types of adhesives can the diaphragm-type back-suction valve LK-9880 handle?
A: The product is compatible with adhesives ranging from 0 to 100,000 cP, including low-viscosity water-based adhesives, medium-viscosity epoxy adhesives, high-viscosity silicone adhesives, and more—covering virtually all industrial adhesive types.
Q2: What is the valve’s drive configuration, and can it be used with existing automated equipment?
A: The product uses a DC 24 V solenoid valve and operates at 0.5 MPa air pressure, conforming to standard industrial automation power configurations. No additional modifications are required to integrate with most existing automated production lines.
Q3: How does the product address compatibility challenges posed by different adhesives?
A: The product offers multiple fluid-channel options, allowing users to select the most appropriate channel based on adhesive viscosity, flow characteristics, and other factors, ensuring stable fluid delivery and precise dispensing throughout the process.
Q4: How does the product achieve drip-free shut-off?
A: Through the seamless integration of the valve body and diaphragm, the diaphragm’s back-suction action rapidly draws any residual adhesive back into the channel at the moment of shut-off, completely preventing stringing or dripping.
Q5: Does the product support customization?
A: Yes, custom inquiries are welcome. Based on customers’ specific production needs, adhesive characteristics, equipment configurations, and other factors, the manufacturer provides personalized solution quotes to create even more tailored fluid-control systems.