The AirTAC GFR600-25 AirTAC Filter Regulator NPT1 5 um Bar Gauge 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 the downstream pressure at your set point. This 600-size unit is built around a 1 in NPT port for high-flow mains, with a 5 um filter element (the finer of the two catalogue grades), a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and an aluminium alloy bowl. The fitted square gauge reads in bar, and the built-in reverse/check valve holds the downstream setting if upstream pressure is lost. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing). No mounting bracket is included with this code.
This is a genuine AirTAC part. The GFR filter-regulator family spans four 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, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published in the catalogue as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR600-25 AirTAC Filter Regulator NPT1 5 um Bar Gauge |
|---|---|
| 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 | 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. |
|---|---|
| 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)). |
| (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 · PT1" · 5 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-25 (two-unit set) |
Dropping a 1 in main feed to a paint line: the 5 um element strips water and fine particulate before spray equipment, while the regulator holds a steady set pressure so gun atomisation stays consistent through the shift.
Feeding the cylinder banks that drive conveyor stops and gating on a bottling line: the unit cleans the plant air and keeps actuator pressure stable, and the check valve holds the setting if the upstream supply dips.
Supplying the clamping and tool-change circuits of a CNC machining centre: clean, regulated air at a fixed bar setting keeps clamps repeatable, with the 5 um grade protecting directional valves and cylinders from fine contamination.
Start with size and port: the 600 body with its 1 in NPT connection is the largest step in the range, chosen when the main air supply to a cell or machine must pass through the unit without throttling - match it to your pipe and expected flow demand. Choose the drain to suit access: this code uses the differential-pressure drain (the default), while automatic drains suit unattended installations and manual drains suit points an operator visits anyway. This unit carries the 5 um element (code W) rather than the 40 um standard, which is the right pick where finer particulate matters downstream. The square gauge here reads in bar; MPa and psi scales are also available, and an external round gauge is an option. Thread is NPT on this code, with PT (the standard) and G offered as order options; brackets are optional on GFR, and this code omits one.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated number, so we cannot quote a rated flow figure. Send us your application details and we will confirm the datasheet and sizing 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 family as performance curves rather than a single rated figure, so there is no one rated flow number we can quote. Tell us your line pressure, downstream demand and allowable pressure drop, and we will confirm the datasheet figures and check the sizing for your application on request.
The W in the code GFR60025JF3WTK selects the 5 um filter element instead of the 40 um standard, which suits circuits with finer tolerance valves or sensitive downstream equipment. The K selects a built-in reverse/check valve, which holds the regulated downstream pressure if the upstream supply is interrupted. Both are catalogue options on the GFR family, alongside drain type, gauge style and scale, thread (PT standard, G and NPT to order) and bracket.
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.