KIMAIR KZD Series Intelligent Zero Air Loss Condensate Drains

The KZD Series represents an innovation in drain technology, using intelligent liquid level sensing and pilot-operated diaphragm valves to achieve "drain only when water is present, stop immediately when drained" with zero compressed air consumption. Compared to timed drains, it operates precisely based on actual accumulated water, ensuring absolute equipment dryness while eliminating the energy waste caused by timed drains' periodic air exhaust.

Category：

Air Compressor Maintenance & Service Solutions

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| Product Details

Video Tutorial

KIMAIR KZD Series Intelligent Zero Air Loss Condensate Drains Principle Explanation Video

KIMAIR Core Advantages

True Zero Air Loss

- No precious compressed air consumed during the drainage process, significant energy savings.
Intelligent Liquid Level Control

- Built-in liquid level sensor, real-time detection, on-demand drainage, maximizing efficiency.
High Reliability Design

- No vulnerable mechanical floats, uses electronic sensing and pilot valves for longer life.
Visual Status

- LED indicators show power, operation, and fault status.
Superior Adaptability

- Low requirements for water quality, strong anti-pollution capability, suitable for oil-water mixed condensate.

Technical Parameters

model	KZD-200E	KZD-400E	KZD-800E	KZD-1800	KZD-2800
Product features	Modular structure, small size, and lightweight, applicable to filters and small-sized dryers	Zero air-loss, innovative modular structure, and complete specifications to meet the needs of all air compression systems	Modular structure Multiple materials optional Visible water level optional	Aluminum housing	Aluminum housing
Applications	Small water volume, such as filters and small-sized dryers	General purpose, such as cooler separator, air tank, refrigeration dryer	General purpose, such as cooler separator, air tank, refrigeration dryer	Slightly large water volume	Large water volume
Max. discharge volume corresponding to working pressure	12 L/h	70 L/h 65 L/h	100 L/h 90 L/h	200 L/h	480 L/h
Recommended Compressor Capacity	10 m³/min	50 m³/min	100 m³/min	200 m³/min	600 m³/min
Recommended refrigeration dryer capacity	20 m³/min	100 m³/min	200 m³/min	400 m³/min
Recommended filter capacity	100 m³/min	500 m³/min	1000 m³/min	2000 m³/min
Applicable media	Water, Oil-containing condensate
Temperature of medium	1–60°C	1–60°C	1–60°C	1–60°C	1–60°C
Temperature of ambient	1–60°C (Heating bar is optional for sub-zero temperature)
Inlet	1*G1/2"	2*G1/2"	3*G1/2"	3*G1/2"	3*G3/4"
Outlet	φ8(G1/4")	φ10(G1/2")	φ10(G1/2")	φ12(G1/2")	G1/2"
Type of discharge valve	Solenoid valve	Solenoid valve	Solenoid valve	Solenoid valve	Solenoid valve
Valve orifice	2.0 mm	4.0 mm	4.0 mm	4.5 mm	5.5 mm
Front mesh strainer of discharge valve	Yes (Outer set)	Yes (Outer set)	Yes (Outer set)	Yes (Outer set)	Yes (Outer set)
Material of housing	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Manual function	Yes (Outer set)	Yes	Yes	Yes	Yes
Protective class	LP65	LP65	LP65	LP65	LP65
Supply voltage options	24V AC/DC, 110V AC, 220V AC
Alarm function	Two kinds of alarm contacts of normally open (N.O.) (switch on when alarm) and normally closed (N.C.) (switch off when alarm)are available at the same time.
Load of alarm contacts	Max. 62.5VA for alternating current, Max. 60W for direct current
Overall dimensions LWH (mm)	93×79×124	177×110×147	207×110×147	186×110×238	229×176×292
Net weight	0.6 kg	2.2 kg	2.5 kg	3.0 kg	8.8 kg

Application Scenarios

- Systems highly sensitive to energy consumption: such as large air compressor stations, energy-saving retrofit projects.

- Networks with many scattered drain points: batch use yields obvious energy savings.

- Discharging oily, dirty condensate: where traditional float types are prone to sticking.

- Critical drain points requiring high reliability and status monitoring: such as sterile workshops, data centers.

Customer Frequently Asked Questions (FAQ)

Q: How does a zero air loss drain achieve energy savings? How can the energy saving effect be quantified?

A: Traditional timed or differential pressure drains exhaust compressed air with each operation (lasting seconds). The KZD Series only discharges liquid, not air. The energy saving depends on drain frequency and pressure. For example, replacing a timed drain with a 1/4” port, operating twice per minute at 0.7MPa, with a KZD can save hundreds to thousands of kWh per year per unit. We provide an energy saving calculation tool.

Q: Are the electronic components easily damaged in humid environments?

A: The KZD Series is designed for harsh environments:

1) Sensing probe: IP65 protection, completely waterproof;

2) Circuit sealing: epoxy resin potting, moisture and vibration resistant;

3) Operating temperature: 1°C to 60°C.

Its reliability is much higher than mechanically operated float-type drains.

Why Choose the KZD Series?

With energy costs rising daily, every cubic meter of compressed air represents real money. The KZD Series reduces the energy consumption of this "necessary waste" - drainage - to zero, making it a perfect reflection of lean production and cost control. It not only saves electricity costs but also represents an advanced, sustainable equipment management philosophy.