The AirTAC AirTAC GFR600-20T 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 GFR600-20T is a filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This size 600 unit is built for 3/4 in NPT ports, and this configuration carries the W-grade 5 um filter element for finer filtration than the standard 40 um element, a differential-pressure drain that bleeds condensate automatically as flow passes through, and the low-pressure regulator type for applications that hold pressure below the standard range. Because it is the 600 size, the bowl is aluminium alloy, and the unit ships with a mounting bracket. A round gauge scaled in bar is fitted so operators can read and set the downstream pressure directly.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, PT, G or NPT threads, and gauge options. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow figures for this series are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application.
| Model | AirTAC GFR600-20T 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 | 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 — round, 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". |
| (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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. 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. |
| (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) |
Fixture clamps and soft-grip actuators on a machining cell often need a held pressure well below the main header. This low-pressure type GFR filters the supply air to 5 um and regulates it down to the clamp's working band, with the bar-scale gauge letting the setter verify the setting at the machine.
Packaging machinery frequently runs a separate low-pressure circuit for sealing bars, vacuum assist or delicate pick-and-place cylinders. A 3/4 in filter regulator at the circuit inlet strips water and fine particulate before regulation, and the differential-pressure drain carries condensed water away without a manual walk-round.
Valve trains on a coating line are sensitive to both dirt and pressure drift. Feeding them through this 5 um filter regulator cleans the air to a fine grade and holds a stable, lower-than-header pressure, with the aluminium 600-size bowl suited to a fixed plant installation on its mounting bracket.
Start with the port and size step: the 600 size with a 3/4 in NPT port is the largest GFR frame, so step up to it when your line's flow demand outgrows a 1/2 in unit - and let us confirm the fit against the flow curves before you order. Choose the drain next: this unit uses the differential-pressure drain (the default), while automatic and manual drains are order options on the series. On filtration, 40 um is the standard element and the W code selects this finer 5 um element for downstream equipment that needs cleaner air. The low-pressure (L) regulator type is the right pick when your process holds pressure below the standard regulator range; the exact adjustment window for the low-pressure type is not published, so confirm it with us. Gauges are available as the embedded square type or an external round gauge, scaled in MPa, psi or bar - this unit carries the round bar-scale gauge. Thread is a decodable choice too: PT is the catalogue standard, with G (BSPP) and NPT as order options, and this code selects NPT. Brackets are included unless the J (no bracket) option is ordered.
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 figure, so we do not quote a flow number. Send us your application details and we will confirm the datasheet flow curve and check the sizing against your 3/4 in line before you order.
The W code in GFR600-20LC3WT selects the optional 5 um filter element, one grade finer than the 40 um standard, for downstream equipment that needs cleaner air. The L code selects the low-pressure regulator type, intended for applications that hold pressure below the standard range; its exact adjustment window is not published in the catalogue, so confirm it with us. If you do not need either, the same size is available as a standard-range unit with the 40 um element.
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.