The AirTAC AirTAC GFR600-25 Filter Regulator NPT 1 in 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 that removes water and particulate from compressed air and then regulates downstream pressure. This size-600 unit carries a 1 in NPT port, is the low-pressure regulator type, and drains by hand through its manual drain. The 40 um standard filter element handles general-purpose air preparation, the aluminium alloy bowl suits this largest frame, and the fitted round gauge reads in psi so operators can set and monitor the downstream pressure directly. A reverse/check valve is fitted, and the mounting bracket is included.
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and can be ordered with automatic, manual or differential-pressure draining, a 5 um element in place of the standard 40 um, alternative gauge styles and scales, and G (BSPP) or NPT threads in place of the PT standard. Flow figures for this series are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | AirTAC GFR600-25 Filter Regulator NPT 1 in 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, psi 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. 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. |
| 2 | Gauge scale: psi. 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. |
| 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" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-25 (two-unit set) |
On a packaging line where a machine section runs at reduced supply pressure, the GFR600-25 filters water and scale out of the plant air and holds a steady low downstream pressure to the actuators, with the psi gauge letting the line technician set and check the setting at the machine.
At a blow-off station on a conveyor line, this unit strips condensate and particulate before the air reaches the nozzles and regulates the supply to the level the station needs; the manual drain lets the operator clear accumulated water during shift checks.
Feeding a control panel or manifold on a process skid, the GFR600-25 gives one connection point for both clean air and stable low-pressure supply; the fitted check valve holds the set pressure against upstream dips, and the included bracket mounts the unit beside the panel.
Start with the port step: size 600 with its 1 in NPT connection is the largest frame in the GFR range, so match it to your line size and let us confirm the flow curve against your demand before ordering. Choose the drain to suit access: this unit is manual drain, which suits attended installations where an operator can bleed the bowl; automatic and differential-pressure drain options exist if the unit will sit unattended. The standard 40 um element covers general air preparation; specify the W code for the 5 um element where finer filtration is needed. The fitted round gauge reads in psi; square embedded gauges and MPa or bar scales are the other catalogue choices. PT is the standard thread, with G (BSPP) and NPT as orderable options - this unit is the NPT version. The bracket is included; J-coded variants omit it. Because flow is published as curves rather than a single rating, send us your application details and we will confirm 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 series as curves, not as a single rated figure, so we do not quote one number. Tell us your line pressure and air demand and we will confirm the datasheet flow curve for this size-600, 1 in NPT unit on request before you order.
The M in the code GFR60025MLC2TK specifies a manual drain: accumulated water is released by hand, which suits installations that are checked regularly. The same GFR600 frame can be ordered with automatic drain (code A) or the default differential-pressure drain if the unit will run unattended.
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.