The AirTAC AirTAC GFR600-25 Filter Regulator NPT 1 in 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 PT1" 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 GFR600 combines water and particulate filtration with pressure regulation in a single body. This 600-size unit is ordered with a 1 in NPT port, the 5 um filter element (the W grade, finer than the 40 um standard), a manual drain, and the low-pressure regulator type. Because it is size 600, the bowl is aluminium alloy, and this configuration includes a round external gauge scaled in bar plus a mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200 to 600 with ports from 1/8 in to 1 in, and options for drain type, filter grade, gauge style and scale, G (BSPP) or NPT thread, and bracket choice. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | AirTAC GFR600-25 Filter Regulator NPT 1 in Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT1" (NPT thread) |
| Filtering grade | 5 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 — 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. |
|---|---|
| 25 | Port size PT1". 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. |
| (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 · PT1" · 5 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-25 (two-unit set) |
Feeding spray guns and air-atomising coating headers that run below standard shop pressure, where the low-pressure regulator holds a gentle setting and the 5 um element removes water and fine particles ahead of the gun.
Supplying looms and spinning frames on a 1 in main, where one body does both the filtering and the regulating instead of a separate filter and regulator pair, and the manual drain suits an attended daily blow-down routine.
Cylinder-driven guides, pushers and diverters on packaging conveyors, where the low-pressure type suits circuits running below normal line pressure and the 1 in port matches the conveyor's main air drop.
Size and port step up with flow demand: sizes 200 through 600, with ports from 1/8 in to 1 in; this unit is the 600 size on a 1 in NPT connection. Choose the drain: differential-pressure (default), automatic (A), or manual (M, as here). Choose the element: 40 um standard or 5 um with W. Gauges come as an embedded square gauge (MPa, psi or bar scales) or an external round gauge; this code specifies round, bar. Thread is PT as standard, with G (BSPP) and NPT as order options, and a bracket is included unless J is specified. Flow for these units is published as curves, not a single rated figure, so please ask us to confirm sizing 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 rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow and datasheet figures for this 1 in NPT, low-pressure configuration on request.
The W in the code selects the 5 um element instead of the 40 um standard, for finer water and particulate removal. M selects a manual drain, so condensate is emptied by hand - a good fit where the unit is checked as part of a routine. Automatic and differential-pressure drains are available on the same size if you prefer unattended drainage.
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.