The AirTAC GFR600-25 AirTAC Filter Regulator 1 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 PT1" 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 GFR600-25 is a filter regulator: one body that removes water and particulate from compressed air and holds a set downstream pressure. This 600-size unit carries a 1 in NPT port, the finer 5 um filter element, a differential-pressure drain that bleeds condensate as the pressure drop across the element rises, and an external round gauge scaled in MPa. The L code marks the low-pressure regulator type; its exact regulation range is not published, so confirm it against your setpoint before ordering. The bowl on size 600 is aluminium alloy, maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C (non-freezing). No mounting bracket is fitted.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of 40 um standard or 5 um filtration, differential-pressure, automatic or manual drains, embedded square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so send us your flow and pressure requirements and we will confirm sizing and the full datasheet on request.
| Model | GFR600-25 AirTAC Filter Regulator 1 in NPT, 5 um |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT1" (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, MPa 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". |
| (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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 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) |
On a spray-finishing line, this unit filters the shop air to 5 um and holds a steady low regulated pressure to the atomizing air header, keeping the finish consistent while the differential drain carries off condensate from a humid compressor room.
Feeding air knives and blow-off nozzles on a bottle rinser or labeler, the 1 in NPT port serves a high-demand branch main, the regulator holds the set pressure the nozzles were tuned to, and the aluminium bowl stands up to the wettest point downstream of the dryer.
On a CNC cell where clamps and swing cylinders are specified for a low holding pressure, the low-pressure type lets the circuit run at its intended setpoint, the 5 um element protects valve spools from particulate, and the MPa gauge gives the operator a visible setpoint.
Size the unit by port and expected flow: 600 is the largest published size with a 1 in port, so step down to 300 or 400 if your line runs smaller ports. Choose the drain to match duty - differential-pressure (this unit) needs no attention while air is flowing, automatic drains cycle on their own, and manual drains suit light or intermittent duty. The 5 um element here is the finer option; 40 um is the standard grade if your downstream equipment tolerates coarser filtration. Gauges come embedded square or external round in MPa, psi or bar scales - this unit carries the round MPa gauge. Thread is NPT here; PT is the standard and G is also a catalogue option to order. The J code omits the mounting bracket - pick a bracketed variant if you wall- or panel-mount. Flow is published as curves, not a single rating, so 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 upstream pressure, set pressure and expected air consumption, and we will confirm sizing from the datasheet on request before you order.
It marks the low-pressure regulator type rather than the standard type. The exact regulation range for the low-pressure type is not published, so if your application needs a specific setpoint, tell us the target pressure and we will confirm suitability from the datasheet on request.
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.