Product details
Product Description
The WK-4BM Vacuum Pump is a high-performance dual-stage intelligent HVAC vacuum pump designed for deep vacuum applications and maximum safety. With a 4.5 CFM flow rate, it is ideal for professional HVAC technicians working on residential and commercial systems.
This model features a DC brushless sparkless motor, making it safe for use with modern and flammable refrigerants such as R32 and R290. Its dual-stage design allows it to achieve a deep vacuum level of 15 microns, ensuring complete removal of moisture and non-condensable gases.
The pump is equipped with a built-in solenoid valve and high-precision vacuum gauge, providing better control and preventing oil backflow during operation. With its forced oil lubrication system, oil mist filter, and durable construction, the WK-4BM delivers reliable, clean, and long-lasting performance for demanding applications.
Key Features
- Dual-stage vacuum pump for deep vacuum applications
- 4.5 CFM (127 L/min) flow rate for efficient evacuation
- DC brushless motor (sparkless & explosion-proof)
- Built-in solenoid valve to prevent oil backflow
- Integrated high-precision vacuum gauge
- Achieves deep vacuum up to 15 microns
- Oil mist filter for cleaner and low-emission operation
- Large oil sight glass for easy oil monitoring
- Brass inlet ports for durability
- Compact and portable intelligent design
Technical Specifications
| Specification | Details |
|---|---|
| Model | WK-4BM |
| Type | Intelligent Vacuum Pump |
| Series | BM Series |
| Stage | Dual Stage |
| Flow Rate | 4.5 CFM (127 L/min @ 50Hz) |
| Ultimate Vacuum | 15 microns |
| Motor Type | DC Brushless (Sparkless) |
| Power | 1/2 HP |
| Inlet Port | 1/4″ & 3/8″ Flare |
| Oil Capacity | 300 ml |
| Dimensions | 315 × 136 × 312 mm |
| Weight | Approx. 6 kg |
Applications
- HVAC system evacuation (deep vacuum)
- R32 / R290 / R1234YF refrigerant systems
- Air conditioning installation and servicing
- Refrigeration system maintenance
- Professional and industrial HVAC operations
Frequently Asked Questions (FAQs)
Q1: What makes WK-4BM different from S Series pumps?
It includes a brushless motor, solenoid valve, and vacuum gauge—making it a premium intelligent model.
Q2: Is WK-4BM safe for R32 refrigerant?
Yes, its sparkless brushless motor makes it suitable for flammable refrigerants.
Q3: What is the vacuum level of this pump?
It achieves a deep vacuum of up to 15 microns.
Q4: What is the flow capacity?
It delivers 4.5 CFM flow rate.
Q5: Is it suitable for professional use?
Yes, it is designed for high-performance and professional HVAC applications.
