Laminar Flow Pass Box

Product Specifications

Note: The specifications listed in the table are for customers' reference only, and the laminar flow pass box can be designed and made according to customers' requirements.

Key Features & Highlights

Elevate your contamination control strategy with a transfer solution built for uncompromising reliability. Every component is selected to deliver sustained performance under rigorous daily operations, ensuring your facility remains compliant and your products remain uncompromised.

• Exceptional Contamination Barrier:

• Acts as a decisive physical and aerodynamic shield between classified and unclassified zones, protecting core processes.

• Ergonomic Operation:

• The centralized control panel offers intuitive access to fan operations, UV lighting, and blowing time adjustments, significantly reducing operator fatigue.

• Whisper-Quiet Performance:

• Engineered with advanced acoustic dampening to keep operational noise below 65dB, promoting a focused and comfortable laboratory or production atmosphere.

• Validation-Ready Design:

• Pre-equipped with DOP test ports and PAO injection ports, making routine compliance testing straightforward, efficient, and highly accurate.

• Aesthetic and Functional Integration:

• The sleek stainless steel finish and flush-mounted tempered glass doors seamlessly blend into modern cleanroom architecture while providing maximum visibility.

Material & Construction

The structural integrity of a transfer chamber dictates its lifespan and hygienic reliability. We utilize premium-grade materials and advanced fabrication techniques to deliver a unit that withstands harsh sterilants and continuous, high-volume usage.

• Premium 304# Stainless Steel:

• The entire inner and outer housing is constructed from high-gauge stainless steel, offering superior resistance to corrosion, rust, and chemical degradation from aggressive cleaning agents.

• Seamless Rounded Interiors:

• The internal chamber features smooth, coved corners, completely eliminating sharp edges and microscopic gaps where particulate matter or bio-burden could hide, ensuring gap-free connection.

• Reinforced Base Plate:

• The bottom incorporates a 304# stainless steel cold-rolled punched plate design bolstered by reinforcing ribs, providing exceptional load-bearing capacity for heavy material transfers.

• Double-Layer Tempered Glass:

• The robust viewing windows offer crystal-clear visibility while ensuring maximum safety, impact resistance, and thermal insulation during operations.

Filtration & Airflow System

Achieving and maintaining Class A (ISO 5) cleanliness requires an unforgiving approach to air purification. This unit leverages a dual-stage filtration architecture and precision aerodynamics to bathe transferred items in particulate-free air.

• Dual-Stage Purification:

• Incoming air first passes through a G4 primary-efficiency filter to capture larger particles, significantly extending the operational life of the critical downstream filter.

• Gel Seal HEPA Technology:

• The H14 HEPA filter employs a sophisticated gel seal mechanism, guaranteeing a leak-proof installation and capturing microscopic airborne particles with absolute efficiency.

• Vertical Laminar Flow:

• Air is supplied from the top and returned through the bottom mesh plate, creating a uniform, unidirectional sweeping motion that effectively washes contaminants away from the payload.

• Optimized Air Velocity:

• A consistent air speed is controlled at 0.36-0.54 m/s (tested at 150 mm below the flow equalizing plate), striking the perfect balance between particle removal efficiency and energy conservation.

Interlock & Airtightness

The fundamental purpose of this equipment is to prevent pressure loss and cross-contamination when doors are opened. Our sophisticated sealing and interlocking mechanisms ensure that your cleanroom's environmental envelope is never breached.

• Electronic Door Interlock:

• A highly responsive built-in electronic system strictly prevents both doors from being opened simultaneously, maintaining the critical pressure differential between adjoining rooms.

• Precision Pressure Monitoring:

• An integrated differential pressure gauge provides real-time visual feedback on HEPA filter resistance (ranging 0-500Pa), accurate to ±5Pa, allowing for proactive maintenance scheduling.

• Hermetic Sealing:

• High-grade elastomeric gaskets line the door perimeters, creating an airtight seal when compressed by the heavy-duty stainless steel meniscus handles.

• Structural Integrity:

• The gap-free construction of the housing ensures that no ambient air can bypass the filtration system, securing the absolute integrity of your classified spaces.

Sterilization & Validation

Regulatory compliance in critical manufacturing sectors demands rigorous validation capabilities and robust sterilization protocols. This unit is engineered to exceed the stringent requirements of global health authorities.

• Integrated UV Sterilization:

• A dedicated ultraviolet germicidal lamp provides thorough surface disinfection of transferred items and the internal chamber, designed to switch separately for targeted control.

• Built-in PAO Injection Port:

• Facilitates the seamless introduction of polyalphaolefin aerosols for accurate filter integrity testing without the need to dismantle the unit.

• Standardized DOP Test Port:

• Allows validation engineers to easily connect photometers or particle counters to verify the absence of leaks in the HEPA filter installation.

• Audit-Ready Compliance:

• The combination of traceable materials, verifiable airflow dynamics, and accessible testing ports makes this equipment perfectly aligned with rigorous pharmaceutical and medical industry guidelines.

Smart Control & Maintenance

Complex equipment should not require complex operation or cumbersome upkeep. We have prioritized user-friendly interfaces and accessible mechanical layouts to minimize downtime and streamline daily interactions.

• Centralized Control Panel:

• Operators can effortlessly manage fan start/stop functions, monitor pressure differentials, and engage the UV sterilizer from a single, intuitive interface.

• Customizable Blowing Cycles:

• The blowing time is manually adjustable from 0 to 999 minutes, allowing facility managers to tailor the decontamination cycle to specific material requirements and standard operating procedures.

• Ergonomic Maintenance Access:

• An access port is strategically equipped in the lower part of the pass box, permitting technicians to service the centrifugal fan without disrupting the sterile core.

• Long-Life Components:

• By utilizing high-efficiency centrifugal fans and protecting the HEPA filter with a G4 pre-filter, the overall maintenance intervals are significantly extended, lowering the total cost of ownership.

Industry Adaptability & Customization

No two controlled environments are exactly alike. Recognizing the diverse needs of high-tech industries, this transfer solution offers unparalleled versatility, ready to integrate into a wide array of specialized architectural layouts.

• Broad Industry Application:

• Proven performance in biopharmaceutical manufacturing, semiconductor fabrication, hospital operating theaters, P3 biosafety labs, and sterile food processing plants.

• Comprehensive Standard Sizing:

• Available in four standardized models (ZKSJ-CLCDC 400, 500, 600, and 800 series) to accommodate varying payload dimensions and cleanroom wall thicknesses.

• Material Upgrades:

• While 304# stainless steel is standard, the entire unit can be upgraded to 316L stainless steel for environments utilizing highly aggressive sporicidal agents or specialized chemical processes.

• Bespoke Engineering:

• Our engineering team can modify overall dimensions, integrate specialized sterilization methods, or adapt the control logic to meet unique and exacting client specifications.

Why Choose Us

Sourcing critical cleanroom infrastructure requires a partner who understands the profound stakes of contamination control. We deliver more than just equipment; we provide peace of mind through engineering excellence and unwavering support.

• Uncompromising Quality Control:

• Every unit undergoes rigorous factory acceptance testing, including airflow velocity mapping, noise level checks, and filter leak testing, before dispatch.

• Direct Value:

• By streamlining our production and supply chain, we provide premium-grade cleanroom technology at highly competitive price points, maximizing your facility's return on investment.

• Deep Industry Expertise:

• Decades of experience outfitting critical environments give us the insight to recommend the exact configurations needed for your specific regulatory landscape.

• Responsive Global Support:

• From initial consultation and custom design to post-installation troubleshooting, our dedicated technical team is always ready to assist with your operational needs.

• Future-Proof Designs:

• Our continuous investment in research and development ensures that our products evolve alongside the ever-tightening standards of global pharmacopeias and cleanroom directives.

FAQ

Navigating the technical nuances of cleanroom transfer equipment can be complex. Below, we address some of the most common inquiries regarding the installation, operation, and maintenance of our laminar flow systems.

• Q: How often should the H14 HEPA filter be replaced?

• A: The lifespan of the HEPA filter largely depends on the frequency of use and the cleanliness of the surrounding environment. However, under normal operating conditions and with regular replacement of the G4 primary-efficiency filter, the HEPA filter typically lasts between 12 to 36 months. We recommend relying on the built-in differential pressure gauge; a significant pressure drop indicates it is time for a replacement.

• Q: Can the electronic interlock system be bypassed in case of a power failure?

• A: Safety and environmental integrity are our top priorities. In the event of a power outage, the electronic magnetic locks are designed to fail-safe, typically releasing the doors to allow material retrieval and prevent items from being trapped. Specific manual override configurations can be customized based on your facility's safety protocols.

• Q: Is the UV sterilization cycle automatic or manual?

• A: The standard configuration features an independently switched UV lamp, allowing operators to manually activate the sterilization process as needed via the centralized control panel. For facilities requiring automated protocols, the control logic can be customized to trigger the UV light automatically upon door closure for a pre-set duration.

• Q: What is the primary purpose of the DOP and PAO ports?

• A: These ports are essential for regulatory compliance validation. The PAO injection port allows technicians to introduce a challenge aerosol upstream of the filter, while the DOP test port is used to scan the downstream face of the HEPA filter for microscopic leaks, ensuring the Class A environment is completely uncompromised.

• Q: Does the unit require a connection to the facility's main HVAC system?

• A: No, this is an active, self-contained unit. It features its own internal centrifugal fan and dual-stage filtration system to generate the vertical laminar flow. It only requires a standard electrical connection to operate, making it highly versatile and straightforward to install in existing cleanroom walls.