The AirTAC GFR600-20 AirTAC Filter Regulator, NPT3/4, 40 um 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 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 holds downstream pressure at your setpoint in one body. This configuration is threaded NPT3/4 (3/4 in), carries the standard 40 um filter element, and drains condensate by differential pressure, so the bowl bleeds automatically whenever line pressure drops - no daily manual draining. The fitted round gauge reads in bar, and the aluminium alloy bowl suits this large-frame size. No mounting bracket is included and no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, optional 5 um (W) elements, automatic or manual drains, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application.
| Model | GFR600-20 AirTAC Filter Regulator, NPT3/4, 40 um |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT3/4" (NPT thread) |
| Filtering grade | 40 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 — 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. 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). |
| C | Gauge shape: Round. 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) |
Drops feeding spray booths and air-bearing equipment need clean, moisture-reduced air at a steady setpoint; the 3/4 in GFR600-20 conditions the branch right where the paint kitchen hands off to the line.
A bank of solenoid valves on a cartoner or case packer behaves predictably only when supply pressure does not wander; this filter regulator stabilises the manifold feed while the 40 um element keeps debris out of valve seats.
Heavy impact wrenches and grinders on a 3/4 in shop main draw hard and generate condensate upstream; a GFR600-20 at the drop header keeps tools fed with filtered air at a fixed, repeatable pressure.
Size 600 with a 3/4 in port sits at the top of the GFR range - step up or down (200/300/400) only after checking required flow against the published curves, which we will confirm on request. Drain choice: differential-pressure (this unit) drains on pressure drop, automatic (A) drains on a timed/level basis, manual (M) needs a hand operation - pick per how often the line cycles. Element grade: 40 um standard here, 5 um with code W where finer protection is needed. The C3 code gives a round gauge scaled in bar; embedded square gauges with MPa/psi/bar scales are also available. Thread is NPT on this model; PT is the catalogue standard and G (BSPP) is an order option. Bracket: J means none is supplied.
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 GFR flow as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure, setpoint and expected air demand and we will confirm the sizing against the datasheet curves on request before you order.
With the blank drain code, the GFR600-20 uses a differential-pressure drain: condensate is discharged from the bowl automatically whenever the pressure drop across the element rises, with no operator action. If your line runs at a very steady pressure with little cycling, an automatic (A) or manual (M) drain version may suit better - all three are catalogue options.
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.