The AirTAC GFR600-20 AirTAC Filter Regulator 3/4 in NPT, 5 um 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 size-600 filter regulator: it removes water and particulate from compressed air and sets downstream pressure in one body, on a 3/4 in NPT port. This configuration carries the fine 5 um filter element (the 40 um element is the standard alternative), a differential-pressure drain that bleeds collected condensate automatically whenever the pressure drop across the element rises, and an embedded square pressure gauge scaled in bar. The built-in reverse/check valve holds the set pressure downstream when the upstream supply is lost, and the unit ships without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C, non-freezing. At size 600 the drain bowl is aluminium alloy.
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 is ordered with a choice of drain type, filter grade, gauge scale (MPa, psi or bar), thread form (PT standard, with G and NPT as order options), bracket and check valve. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR600-20 AirTAC Filter Regulator 3/4 in NPT, 5 um |
|---|---|
| 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 | Standard 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, bar scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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)). |
| (blank) | Standard 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. |
| 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. |
| K | Reverse-flow (reflux) valve fitted. |
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) |
Drops feeding assembly stations off a plant ring main get filtered, regulated air at the set pressure, with the check valve holding station pressure if the main is vented.
The 5 um element protects the sorter and wrapper cylinders on a packaging conveyor from water and fine debris, while the regulator holds a steady working pressure.
On a valve-actuation skid, clean regulated air keeps positioner-fed actuators stable, and the square bar gauge gives the technician a direct local pressure readout.
Step up or down through the GFR sizes (200, 300, 400, 600) so the port and the air demand of the circuit match; the 600 size on this model takes a 3/4 in NPT connection. Choose the drain: differential-pressure (as here, self-acting on element pressure drop), automatic, or manual. Choose the filter grade: 40 um standard or 5 um fine (code W, fitted here) where downstream valves and cylinders need cleaner air. The gauge is the embedded square type scaled in bar; MPa and psi scales and an external round gauge are alternatives. Thread is PT as the AirTAC standard, with G and NPT ordered as options - this model is the NPT version. Bracket and check valve are also decodable choices; this unit has no bracket and the check valve is fitted. Flow is published as curves, not a single rating, so send us your air demand and we will confirm sizing against the datasheet before you order.
Quick checklist
The aluminium-alloy bowl on the GFR600 suits harsher environments than a PC bowl. The reflux valve permits reverse flow 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 figure here. Tell us your air demand and working pressure and we will confirm the flow from the datasheet and check the sizing for your application on request.
The K in the code means a reverse/check valve is fitted: it holds the regulated pressure downstream if the upstream supply drops. The W means the fine 5 um filter element is fitted instead of the 40 um standard element - choose 5 um where downstream valves and cylinders need cleaner air.
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.