The AirTAC GFR600-20 AirTAC Filter Regulator 3/4" NPT Low-Pressure is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/4" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR60020MLJF3T is a size-600 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 3/4 in NPT port, a 40 um standard filtration element, a manual drain bowl, a low-pressure regulator type, and an embedded square gauge scaled in bar. The 600 size is the largest in the G-series range and carries an aluminium alloy bowl. Maximum working (inlet) pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, your choice of PT, G (BSPP) or NPT thread, differential-pressure, automatic or manual draining, a 5 um element option (code W), gauge scale options, and bracket choices. Flow is published as curves rather than a single rating, so contact us and we will confirm the flow and datasheet figures for your application on request.
| Model | GFR600-20 AirTAC Filter Regulator 3/4" NPT Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT3/4" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | Aluminium alloy |
| Pressure gauge | Fitted — square, bar 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-20 (two-unit set) |
On a carton-forming and sealing line running at reduced set pressures, this unit cleans the shop air of water and swarf and holds a gentle regulated supply to the cylinders and vacuum generators doing the forming, filling and sealing.
Bench-scale process rigs and pilot-plant skids often need air regulated well below normal line pressure. This low-pressure type filter regulator conditions the incoming shop air and lets the operator dial in the working pressure on the bar-scale gauge.
In a plant air header feeding valve positioners and air-operated control components, this 3/4 in unit drops the header pressure to the level the panel was designed for, with the 40 um element stopping pipe scale and condensed water from reaching the instruments.
Start with the port step: this unit is the 3/4 in NPT version of the size-600 body, the largest GFR size, so match it to lines whose pipe and air demand sit at the top of the range. Drain choice matters in practice: this unit has a manual drain, which suits installations where an operator can bleed the bowl on a routine; choose automatic or differential-pressure draining where the unit is inaccessible or the line runs unattended. Filtration is the 40 um standard element; specify the 5 um option (code W) if downstream equipment needs finer pre-filtration. The square gauge here reads in bar; MPa and psi scales are available. PT is the standard thread and G (BSPP) or NPT are order options, and the bracket can be omitted (code J, as here) or included.
One honest note before you order: AirTAC publishes flow as curves, not a single rated figure, and the exact regulation range of the low-pressure type is not stated on the sheet we work from. Ask us to confirm sizing and the regulation range against your application before ordering.
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, not as a single rated number, so we do not quote a l/min or SCFM figure. Send us your line pressure, set pressure and air demand, and we will confirm the flow from the datasheet curves for this exact model on request.
The M in the code selects a manual drain on the bowl: collected water must be bled off by hand at intervals. It is the simple, low-maintenance-cost choice where the unit is easy to reach. If the installation is inaccessible or runs unattended, the same size is available with automatic (code A) or differential-pressure (blank) draining instead.
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.