The AirTAC GFR600-20 AirTAC Filter Regulator NPT3/4 Low-Pressure is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/4" ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR600-20 is a filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This size 600 unit carries a 3/4 in NPT port, the 5 um filter element (code W) for finer filtration than the standard 40 um grade, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the bowl is sufficient. The bowl on this 600-size unit is aluminium alloy, and the low-pressure type regulator (code L) is intended for applications working at lower set pressures. A square pressure gauge scaled in MPa is fitted, and no mounting bracket is included with this configuration.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options including 5 um or 40 um filtration, automatic, manual or differential-pressure drains, square or external round gauges with MPa, psi or bar scales, and G or NPT threads in place of the PT standard. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR600-20 AirTAC Filter Regulator NPT3/4 Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT3/4" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | Aluminium alloy |
| Pressure gauge | Fitted — square, MPa scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR600 | G-series filter regulator, 600 body — sets the port range. |
|---|---|
| 20 | Port size PT3/4". This body offers 20 = PT3/4", 25 = PT1". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR600 · PT3/4" · 5 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-20 (two-unit set) |
Installed at the take-off point of a factory compressed-air main, it strips water and fine particulate from the 3/4 in branch line and holds a steady low set pressure for the downstream circuit, with the differential-pressure drain handling condensate during continuous running.
Mounted ahead of a bank of directional valves and cylinders on a processing line, it delivers filtered air at a controlled low pressure so actuators cycle consistently, while the fitted MPa gauge gives the operator a direct reading of the set point.
Built into the air-preparation panel of an OEM machine, the low-pressure regulator suits circuits that work at reduced set pressures, and the 5 um element protects downstream components from finer contamination than the standard grade.
Size 600 with a 3/4 in port is the largest step in the GFR range; choose it when the line diameter and expected air demand call for the bigger connection, and step down to 300 or 400 for smaller lines. This unit is the low-pressure type (L), so select it where the working set pressure sits below what a standard regulator is aimed at, and confirm the exact range with us before ordering. The 5 um element (W) suits applications that need finer particulate removal than the standard 40 um grade. The differential-pressure drain is the default and suits steady-running lines; choose an automatic drain (A) for unattended duty or a manual drain (M) where you want positive control. The fitted square gauge reads in MPa; psi or bar scales and an external round gauge are alternatives. Thread here is NPT (T); PT is the catalogue standard and G (BSPP) is also available to order. No bracket is included with this code (J), so plan the mounting accordingly.
Flow for the GFR series is published as curves, not a single rated number, so we cannot quote a rated flow here. Send us your application details and we will confirm the datasheet figures and sizing before you order.
Quick checklist
The aluminium-alloy bowl on the GFR600 suits harsher environments than a PC bowl. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves rather than a single rated figure, so no rated flow number is quoted here. Contact us with your line pressure, set pressure and expected air demand, and we will confirm the datasheet flow curves and check the sizing for your application on request.
The L in the code marks this as the low-pressure regulator type, intended for applications working at lower set pressures than the standard version; the exact range for this variant is not published on our sheet, so confirm it with us before ordering. The drain is the differential-pressure type (blank position): it discharges collected condensate automatically when the pressure differential across the bowl is sufficient, with no manual intervention needed during normal running.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.