Air Shower with Interlocked Pass-Through Door

What is the Air Shower with Interlocked Pass-Through Door?

This variant combines a personnel air shower with a second door arrangement that allows small items to be passed through a side hatch. It suits labs with limited space that need one unit for both staff and small material entry.

Overview

The body follows a single-person air shower layout of about 1000 × 1200 × 2100 mm but adds an L-shaped or side pass-through hatch with an interlock that prevents opening both cleanroom and non-clean doors together. The shower zone provides 20–25 m/s jets, H13 HEPA filtration and a 15–99 second timer. The hatch is typically 500 × 500 mm and includes a stainless steel shelf. A common controller handles door interlocks, so the pass-through cannot be opened while the shower is running. Panels are 304 stainless steel or powder-coated steel. Power is 220 V at about 1.5 kW. This type is less common in large plants but useful in compact cleanrooms and laboratories.

How does it work?

An air shower draws room air through a prefilter and a HEPA or ULPA filter, then accelerates it through adjustable nozzles at 20–25 m/s so the jets strip loose particles and fibres from garments and skin. The contaminated air is captured by return grilles at floor or side level, passes the prefilter and recirculates, so the chamber itself stays clean. A centrifugal blower, a cycle timer typically set to 15–99 seconds, and interlocked doors complete the system: one door cannot open until the other is closed and the cycle finishes. Stainless steel or powder-coated steel panels provide smooth, cleanable surfaces. Sensors detect entry and start the shower automatically, and fluorescent lighting and an emergency release provide safe operation. Material showers use the same principle in a conveyor or pass-through format.

What are the key features?

• Personnel shower with side pass-through hatch
• Single controller interlocks all doors
• 20–25 m/s nozzles with H13 HEPA filter
• Stainless steel shelf in the hatch
• Compact footprint for small cleanrooms
• Timer adjustable 15–99 seconds

What are the technical specifications?

A typical air shower with interlocked pass-through door configuration offers shower zone size of ≈ 1000 × 1200 × 2100 mm, nozzle outlet velocity of 20–25 m/s, filter grade of H13 HEPA, pass-through size of ≈ 500 × 500 mm, airflow of 1200–1800 m3/h and cycle time of 15–99 s adjustable. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Air Shower with Interlocked Pass-Through Door is used in small cleanroom suites, laboratory clean areas, electronics repair rooms and pharmaceutical QC labs. Across the wider Air Showers class, laboratories also deploy it for electronics manufacturing, pharmaceutical production and medical-device assembly.

Which standards and certifications apply?

Relevant standards and methods include ISO 14644-1 (cleanroom classification), ISO 14644-4 (cleanroom design and construction), GB 50073 (cleanroom design code), JG/T 382 (air shower), EN 1822 (HEPA and ULPA filters) and IEC 61010-1. Certification candidates for this model are CE and ISO 9001 manufacturing; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Place the air shower between the gowning room and the classified area, with flat, level floors and an electrical supply of 220–380 V. Interlocks and emergency releases must be tested at commissioning, and a fire-rated door strategy confirmed with the building designer. Replace prefilters every 3–6 months and test the HEPA filter by DOP or PAO scan annually, measuring nozzle velocity with an anemometer. Clean stainless surfaces with compatible disinfectants and keep nozzles free of debris. Air showers do not replace gowning procedures, so define entry SOPs, and avoid using them in rooms where an air-lock with pressure cascade is already required by regulation.

How do I select the right Air Shower with Interlocked Pass-Through Door?

Choose this type when space allows only one entry structure and small items must accompany staff. It does not replace a cargo shower for trolleys. RFQ: hatch size, room class, door opening direction, panel material, power supply and interlock logic.

How does it compare with other Air Showers variants?

Choose by who or what passes through, the room classification and the available space. Personnel showers are specified by the number of people per cycle, with single-person units the most common and two- or multi-person tunnels for higher flow. Cargo showers need a chamber sized for trolleys and loads, often with conveyor rollers. Check nozzle velocity, which should reach at least 20 m/s at the outlet, and the filter grade, HEPA H13 or H14 for ISO 5–8 areas. Consider panel material, stainless steel for pharma and powder-coated steel for electronics, plus interlock logic, cycle time and door type. Confirm fan noise, electrical supply and footprint. A bypass or manual override route must be planned for emergencies and equipment movement.