Static-Safe Precision 360-Degree Dispensing Valve for Conformal Coatings and

Product Specification

Static-Safe Precision 360-Degree Dispensing Valve for Conformal Coatings and Electronic Adhesives with Anti-Static Housing

Product Description:

Ensure the integrity of sensitive electronic components with our specialized static-safe 360-Degree Dispensing Valve. Engineered for the electronics manufacturing industry, this valve is constructed with a carbon-loaded, anti-static housing that prevents the buildup and discharge of electrostatic electricity (ESD), which can destroy delicate circuits. It is designed for the precise application of conformal coatings, potting compounds, and conductive adhesives. The omni-directional capability is crucial for technicians working on densely populated printed circuit boards (PCBs), allowing them to apply materials from the optimal angle without repositioning the board or the dispenser. The valve features a precision-engineered tip that ensures a consistent bead of material, while the robust one-way valve mechanism prevents dripping and oozing that could lead to short circuits or board failure. This liquid dispenser is compatible with a wide range of solvent-based and UV-cure materials, making it an indispensable tool for achieving high yields and reliability in electronics production.

Bullet Points:

• ESD-safe housing protects sensitive microelectronics from static damage during dispensing.

• Provides pinpoint accuracy for applying conformal coatings and adhesives to complex PCBs.

• Anti-drip one-way valve prevents contamination of critical board areas.

• Omni-directional control allows for access to tight spaces between components.

• Chemically resistant to a wide range of solvents found in electronic coatings.

Specific Application Scenario
On a production line, a technician is applying a protective conformal coating to a complex motherboard. Using a dispensing system equipped with this valve, they can easily maneuver around tall capacitors and connectors, applying a consistent, thin layer of coating from multiple angles without any drips falling onto and damaging adjacent, unprotected components.

Factory Production Floor
Production of ESD-safe valves occurs in a controlled environment with grounded equipment and ESD-safe worksurfaces. The carbon-loaded polymers are handled separately to maintain their dissipative properties. Every valve is tested for both its mechanical function and its surface resistivity to ensure it meets the stringent ESD standards required by the electronics industry.

Packing and Transportation
These valves are packaged in sealed, static-dissipative bags, which are then placed in ESD-safe boxes. All packaging is clearly marked with ESD symbols. Shipments are handled to prevent any static generation, ensuring the valves arrive at the customer's ESD-protected area in a ready-to-use condition.

FAQ

1. What is the surface resistivity of the anti-static housing on this dispensing valve?

   • The housing is engineered to have a surface resistivity in the range of 10^6 to 10^9 ohms/sq, which safely dissipates static charge without being conductive.

2. How does the omni-directional function improve accuracy in PCB coating?

   • It allows the operator to maintain the dispenser tip perpendicular to the board surface at all times, even in tight spaces, which is essential for applying a consistent coating thickness and avoiding shadowing behind components.

3. Is this liquid dispenser compatible with fast-curing UV adhesives?

   • Yes, it is compatible. The smooth internal flow path and anti-clog tip design minimize the risk of the adhesive curing inside the valve during short pauses in operation.

4. Can the one-way valve be fully purged to allow for material changes?

   • The design allows for efficient purging with minimal material waste. For frequent material changes, we recommend a dedicated valve for each material type to prevent cross-contamination.

5. What certifications does this flow control component have for use in cleanroom environments?

   • While standard production is for ESD protection, we can provide valves certified for ISO Class 5 cleanrooms, with guaranteed non-outgassing properties and packaging validated for cleanroom introduction.