OFR200 / OFR300 / OFR400 Zinc Alloy Air Filter Regulator
description1

OFR200 1/4" /OFR300 3/8" /OFR400 1/2"
Manual Drain OFR200/OFR300/OFR400 Portsize:1/4" 3/8" 1/2" Zinc Alloy Air Filter Regulator
Auto Drain OFR200-D/OFR300-D/OFR400-D Portsize:1/4" 3/8" 1/2" Zinc Alloy Air Filter Regulator
NANPUOFR200/OFR300/OFR400

OFR | 200 | BSP | |
Series Number | Port Size | Thread Type | Drainage Method |
200: 1/4" | BSP | Blank: Differential Pressure Drain | |
300: 3/8" | NPT | A: Manual Drain | |
400: 1/2" | PT | D: Auto Drain |
NANPUTechnical Specifications
Model | Specification | |
Manual Drain | Auto Drain | (L/min)/Rated Flow Rate |
OFR200 | OFR200-D | 1950 |
OFR300 | OFR300-D | 2500 |
OFR400 | OFR400-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 | 5μm、40μm |
Bowl Material | Polycarbonate |
Bowl Guard | (YES) |
Pressure Range | OFR200-OFR400/0.05~0.85Mpa(0.51~8.7kgf/cm² )/0~125Psi |

1. Preparation
Each calibration assembly is required to meet the maximum flow rate standard.
Before installation, carefully clean all ports and fittings. This thorough cleaning is crucial to prevent dust from entering the air passage.
Check that the direction of the air flow matches the arrow indications on the product. Also, make sure that the sizes of the ports and threads are correctly aligned and compatible.
2. Pressure Adjustment
Lift the knob of the pressure gauge and start turning it. When you turn the knob in a clockwise direction, the pressure will steadily rise. On the other hand, turning the knob counterclockwise will make the pressure go down. As soon as you reach the pressure level you want, stop turning the knob and tighten it firmly. If you don't lock the knob properly, there's a risk of leaks, which can damage the system's functionality and stability.

3. Dial Reading
Ensure that the pressure gauge is firmly mounted on the main body of the equipment. During pressure adjustment, it is essential to closely monitor the dial of the pressure gauge. Examine the smoothness of the reading changes, carefully observing whether the pressure values rise and fall in a consistent and unimpeded manner. In the event of any irregularities, such as abrupt changes or sudden spikes in the readings, immediate inspection and corrective action are needed. This is crucial for maintaining accurate pressure measurements and ensuring the proper functioning of the system.
4. Drainage
The drainage column is equipped with an automatic drainage system. In the absence of system pressure, it will automatically expel the accumulated liquids. But when air is flowing through, the drainage column will close to stop compressed air from leaking out.
Monitoring the water level within the drainage system is of utmost importance. As soon as the water level exceeds the permitted maximum, drainage must be carried out immediately. Failure to do so will lead to subpar dehumidification performance, which can affect the quality of the compressed air and the normal operation of the equipment.
The fitting on the drain head is intended for connecting an air hose. This fitting allows for flexible configuration of the drainage setup, enabling users to attach the appropriate hose for efficient liquid evacuation. Additionally, users have the option to detach the fitting according to their specific operational requirements, offering adaptability in different installation and usage scenarios.

Use an appropriate wrench to tighten the fittings to the specified torque value in order to avoid leaks. When installing the system for the first time, air may be released. This is not a sign of leakage; rather, it is caused by the difference in pressure between the inside and outside of the system, which necessitates the release of extra air. In these situations, give the system enough time to stabilize. Once it reaches equilibrium, it will operate at its best.