Chu Ding Technology YA.ZD-20 All-Stainless-Steel Electrically Heated Distillation Apparatus (20 L/h)

Overview

The Chu Ding Technology YA.ZD-20 All-Stainless-Steel Electrically Heated Distillation Apparatus is a robust, single-stage laboratory-scale steam distillation system engineered for the continuous production of purified water meeting general analytical and preparative requirements. It operates on the principle of thermal phase separation: feed water is heated to boiling in a stainless-steel evaporator chamber; generated steam is directed through a dedicated vapor path into a vertically oriented condenser coil, where it is cooled and condensed back into liquid phase under controlled thermal gradient conditions. The resulting distillate—free from non-volatile ions, organic contaminants, particulates, and most microbial residues—is collected at a nominal rate of 20 liters per hour. Designed for integration into centralized lab utility systems or standalone benchtop operation, the YA.ZD-20 complies with fundamental material and functional expectations outlined in ISO 3696 (Water for Analytical Laboratory Use) Grade 3 specifications and supports GLP-aligned water preparation workflows where high-purity, low-conductivity water is required for glassware rinsing, reagent dilution, buffer preparation, and non-critical instrument feed applications.

Key Features

• Full AISI 304 stainless-steel construction—including evaporator chamber, condenser housing, collection vessel, and external casing—ensures long-term corrosion resistance, mechanical durability, and compliance with cleanability standards for repeated thermal cycling.
• Integrated diverter-style internal flow control architecture enables precise management of steam velocity and condensate residence time, minimizing carryover risk and enhancing distillate purity consistency.
• Bi-directional manually adjustable flow valve allows real-time optimization of distillate output rate without compromising thermal equilibrium or condensation efficiency.
• Compact footprint (900 × 360 × 370 mm) facilitates installation in constrained laboratory environments while maintaining adequate clearance for ventilation and service access.
• High-power 15 kW heating element delivers rapid thermal response and stable boiling conditions across variable inlet water temperatures and ambient loads.
• Front-accessible control panel with integrated power indicator and manual on/off switch ensures intuitive, low-complexity operation suitable for routine technical staff and teaching laboratories.

Sample Compatibility & Compliance

The YA.ZD-20 accepts municipal tap water, deionized water, or pre-filtered feed sources as input. It is not intended for direct use with seawater, highly turbid, or chemically aggressive feedstocks containing volatile organics, heavy metals above EPA drinking water limits, or suspended solids exceeding 5 mg/L. While the apparatus itself does not incorporate automated conductivity monitoring or inline TOC detection, its output—when operated under stable conditions with appropriate feed water pretreatment—typically achieves resistivity > 1 MΩ·cm (conductivity < 1 µS/cm) at 25 °C, consistent with ISO 3696:2012 Grade 3 water. The unit meets CE marking prerequisites for electrical safety (IEC 61010-1) and carries factory certification for electromagnetic compatibility (EMC Directive 2014/30/EU). Documentation includes material traceability for all wetted parts and conforms to standard manufacturer declarations for medical device ancillary equipment (MDR Annex II).

Software & Data Management

The YA.ZD-20 is a manually operated, analog-controlled distillation apparatus with no embedded microprocessor, digital interface, or data logging capability. Operational parameters—including runtime, cumulative output volume, and energy consumption—are recorded externally using independent timers, calibrated flow meters, or utility metering systems. For laboratories operating under FDA 21 CFR Part 11 or EU Annex 11 requirements, manual logbooks compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) are recommended for recording batch-specific operational data, maintenance intervals, and verification checks. Optional third-party integration with building management systems (BMS) or PLC networks is feasible via dry-contact relay outputs (available upon request with custom configuration).

Applications

• Preparation of rinse water for volumetric glassware calibration and cleaning in QC/QA laboratories.
• Feed water supply for autoclaves, humidifiers, and environmental test chambers requiring low-mineral content.
• Primary purification step in multi-stage water systems preceding deionization or UV oxidation units.
• Teaching demonstrations of phase-change thermodynamics, latent heat transfer, and separation fundamentals in undergraduate chemistry and chemical engineering curricula.
• Supporting non-GMP manufacturing processes where ISO 3696 Grade 3 water suffices for equipment flushing and intermediate solution preparation.

FAQ

What feed water quality is recommended for optimal performance and longevity?
Tap water with total dissolved solids (TDS) below 500 ppm and free chlorine residual below 1 ppm is strongly advised. Pre-filtration through 5 µm sediment and activated carbon cartridges is recommended to reduce scaling and extend heating element service life.
Can the YA.ZD-20 be used to produce water compliant with USP Purified Water monograph?
No. This unit lacks the design controls, validation documentation, and continuous monitoring features required for USP Purified Water designation. It serves best as a source of general-purpose purified water, not pharmacopeial-grade material.
Is the condenser cooled by air or circulating water?
The YA.ZD-20 employs an air-cooled vertical condenser with extended finned-surface geometry. No external coolant connection is required.
Does the unit include automatic overheat or dry-run protection?
Standard configuration includes a bimetallic thermal cutoff switch rated for 120 °C activation. An optional high-limit thermostat with manual reset can be installed upon specification.
What maintenance intervals are recommended?
Descaling every 100–150 hours of operation (depending on feed water hardness), visual inspection of gasket integrity quarterly, and annual verification of grounding resistance (< 0.1 Ω) per IEC 61010-1.