The AirTAC GFR600-25 AirTAC Filter Regulator NPT1 Low-Pressure 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 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 GFR600-25 is a filter regulator: one body removes water and particulate from compressed air and holds the downstream pressure at a set point. This size-600 unit has a 1 in NPT port, the low-pressure regulator type, a manual drain on the aluminium alloy bowl, and a 40 um filter element. A round MPa gauge is fitted so the set pressure can be read directly at the unit.
It is a genuine AirTAC part from the GFR series, which spans sizes 200 to 600 with ports from 1/8 to 1 in, a choice of manual, automatic or differential-pressure drain, 40 um or 5 um (code W) filtration, embedded square or external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow figures are published as curves rather than a single rating, so ask us to confirm sizing and datasheet details for your application.
| Model | GFR600-25 AirTAC Filter Regulator NPT1 Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT1" (NPT thread) |
| Filtering grade | 40 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, 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". |
| 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. |
| 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. |
| (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 · PT1" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-25 (two-unit set) |
On a bottling conveyor, air knives strip rinse water from bottles before labelling. This 1 in low-pressure filter regulator cleans the supply and holds the gentle, steady pressure the knives need, without over-blowing labels or caps off the line.
Air-jet looms use continuous low-pressure air to carry weft yarn across the shed. A GFR600-25 at the loom header filters condensate and particulate out of the mill air supply and regulates it to the setting the weave pattern requires.
On a food-packaging line, low-pressure air feeds the sealing, counting and ejection stations from a single 1 in header. This unit filters the header air and lets technicians set a stable low pressure for the delicate stations while heavier actuators run on their own circuit.
Every choice in this series is decodable from the code. Size 200/300/400/600 sets the port and flow band, so step up a size when your line needs more air than a smaller port can carry. Drain is differential-pressure as standard, with automatic (A) for unattended condensate removal or manual (M, as here) where periodic draining suits the maintenance routine. Filter grade is 40 um standard, 5 um with code W. Gauges are embedded square as standard with an optional external round gauge in MPa, psi or bar scales; thread is PT as standard with G and NPT to order; brackets are optional (this unit ships without one). All GFR units run on compressed air at up to 1.0 MPa (145 psi) inlet and -5 to 70 C, non-freezing. This is the low-pressure regulator type; its exact adjustment range is not published, so confirm it with us. Flow is published as curves, not a single rated figure, so send us your air demand and we will confirm the right size before you order.
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. Tell us your line's air demand and operating pressure and we will confirm sizing against the datasheet on request.
This configuration carries code M: someone opens the drain at the bottom of the aluminium alloy bowl to release collected condensate. If the installation runs unattended, the same size is available with an automatic drain (code A) or with the differential-pressure drain that is standard on the series - just order that variant.
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.