NANPU Zinc Alloy 3 Stage Air System - Particulate Filter, Coalescing Filter, Desiccant Dryer
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FRPD32 1/4",FRPD33 3/8",FRPD34 1/2" Preparation
To ensure optimal performance and adherence to industry standards, the assembly of all calibration components must be meticulously executed to meet the maximum flow requirement specified by the system design. Prior to installation, it is imperative to thoroughly clean all ports and fittings using appropriate solvents or compressed air to eliminate any particulate matter, thereby preventing dust ingress into the air path. This proactive measure not only enhances operational efficiency but also extends the service life of downstream equipment. Additionally, strict attention must be paid to the directional alignment of air flow, verified against the arrow indicators prominently displayed on the product body. Concurrently, confirm that all ports and thread sizes are compatible with the designated system specifications to prevent leaks or operational failures. Adherence to these protocols guarantees seamless integration and reliable long-term functionality.
NANPUNANPU Zinc Alloy 3 Stage Air System - FRPD32 33 34
| FRPD3 | 3 | NPT | D |
| Series Number | Port Size | Thread Type | Drainage Method |
| 2: 1/4" | BSP | Blank: Differential Pressure Drain | |
| 3: 3/8" | NPT | A: Manual Drain | |
| 4: 1/2" | PT | D: Auto Drain |
NANPUTechnical Specifications
| Model | Specification | ||
| Manual Drain | Auto Drain | (L/min) /Rated Flow Rate | |
| FRPD32 | FRPD32-D | 1950 | |
| FRPD33 | FRPD33-D | 2500 | |
| FRPD34 | FRPD34-D | 3000 | |
| Max Input Pressure | 1.2Mpa{12.24kgf/cm²} /174.04Psi |
| Max Operating Pressure | 1.0Mpa{10.2kgf/cm²} 145Psi |
| Temperature Range | -5~60℃ |
| Filtration Accuracy | 0.01μm, 5μm |
| Body Material | Aluminium, Zinc |
| Bowl Guard | YES |
| Filter Bead Material | Desiccant |
| Pressure Range | FRPD32~34:0.05~0.85Mpa（0.51~8.7kgf/cm²) |
1. It adopts a three-stage air system, including a particulate filter, a coalescing filter, a desiccant dryer, and an air regulator, with diverse and comprehensive air treatment functions.
2. It is equipped with a poly bowl, which is helpful for relevant operations in the air treatment process.
3. It has a manual drain function, allowing for on-demand drainage operations, which is convenient and practical.
4. It is of the medium flow type and can meet certain air consumption requirements.
5. It has a wide range of applications, being suitable for paint spray and plasma cutters. With a 1/2" NPT interface, it has good adaptability.
1. To initiate pressure calibration, grasp the ergonomic knob of the pressure gauge and gently retract it to disengage the safety lock. Rotate the knob clockwise in incremental 1/8-turn intervals to increase pressure gradually; conversely, rotate counterclockwise to decrease. Monitor the analog or digital display until the desired pressure value aligns with the system specifications. Once achieved, depress the knob firmly to engage the locking mechanism. Failure to secure the knob may compromise seal integrity, leading to pressurized leaks.
2. Prior to operation, confirm the pressure gauge is torque-sealed to the system body using a calibrated wrench to prevent vibration-induced loosening. During adjustment, observe the needle movement for smooth transitions; erratic fluctuations may indicate internal blockages or diaphragm damage. Validate readings against secondary instrumentation to ensure accuracy. This protocol ensures compliance with ASME B40.100 standards for pressure measurement devices.
3. Manual Drainage Protocol
Engage the manual drain valve by rotating the ergonomic lever to the "↓" position, initiating continuous exhaust and water discharge from the filter cup. This operation must be performed when the water level reaches the marked upper limit to maintain optimal dehumidification efficiency. Failure to drain may result in moisture carryover, compromising downstream equipment. To terminate drainage, align the lever with the "↑" symbol, sealing the valve to prevent pressurized leaks. Adhere to a regular maintenance schedule to prevent clogs and ensure valve responsiveness.
4. Service Indicator
The service indicator on the coalescing filter signals when the filter element needs to be replaced.
When the indicator pops up, the element must be replaced.
Primary Filtration Stage
The initial filtration stage employs a multi-vane centrifugal separator and pleated microglass media to remove particulate matter ≥5μm, liquid water, and entrained oil aerosols. This pre-filter reduces bulk contaminants, extending the service life of subsequent stages. Operating efficiency is maintained through a hydrophobic coating that facilitates coalescence and drainage.
Secondary Coalescing Stage
The intermediate filter utilizes borosilicate microfibers with a nominal rating of 0.01μm, achieving a 99.998% separation efficiency for particles ≥0.01μm. This high-efficiency stage employs depth filtration and inertial impaction to capture submicron contaminants, ensuring compliance with ISO 8573-1 Class 1 standards for oil-free air.
Tertiary Desiccant Dryer
The final purification stage features a dual-bed desiccant dryer filled with activated alumina beads, reducing dew points to -40°C (-40°F). The regenerative process employs pressure swing adsorption (PSA) technology to achieve deep drying, ensuring moisture-sensitive applications remain free of condensate. A color-changing indicator signals desiccant saturation, prompting timely regeneration.