The AirTAC GR600-25F1TK AirTAC Air Pressure Regulator NPT1 is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.9 MPa (7 - 130 psi) with PT1" ports, and ships with a pressure gauge. A regulator does not filter the air — put a GF filter upstream, or use a GFR filter regulator, when water and particulate must also be removed.
The GR600-25F1TK is an AirTAC GR-series air pressure regulator for compressed air, and regulation is the only job it does: there is no filter element, no bowl and no lubricator in this unit. This is the 600 size, the largest in the GR range, with 1 in NPT ports, so it sits in a main air line or feeds a high-demand branch where downstream pressure must be held steady. The standard regulator covers an adjustment range of 0.05-0.9 MPa (7-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi). The F1 code means an embedded square gauge is fitted with an MPa scale, so set pressure is read directly on the unit, and the K code means a reverse (check) valve is built in. A mounting bracket is included, and GR bodies of this size can also be panel-mounted.
This is a genuine AirTAC part. The GR family runs from size 200 to 600 with ports from 1/8 in to 1 in, and is offered with PT as the standard thread plus G (BSPP) and NPT as orderable options, a choice of gauge scale (MPa, psi or bar), an optional external round gauge, a low-pressure type limited to 0.4 MPa, and with or without the reverse valve. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the sizing figures from the datasheet for your application.
| Model | GR600-25F1TK AirTAC Air Pressure Regulator NPT1 |
|---|---|
| Series | GR600 pressure regulator |
| Port size | PT1" (NPT thread) |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Standard type |
| Bracket | Fixing bracket included |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — square, MPa scale |
| Reflux valve | Fitted (reverse flow permitted) |
| Mounting | Panel mounting; optional fixing bracket |
Specifications follow the official AirTAC G-series air-preparation data. Note the GR temperature range is -20 to +70 °C, wider than the other G-series units. A regulator has no bowl and no filter element, so there is no filtering grade. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GR600 | G-series pressure regulator, 600 body — sets the port range. |
|---|---|
| 25 | Port size PT1". This body offers 20 = PT3/4", 25 = PT1". |
| (blank) | Standard type — 0.05 - 0.9 MPa (7 - 130 psi). Blank is standard, L is the low-pressure type. |
| (blank) | Fixing bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| 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, type, bracket, gauge, gauge shape, scale, thread, reflux — a blank position takes the default. Example: GR300-08LNK is a 300 body, PT1/4", low-pressure type, no gauge, with 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 rather than from a single rated figure.
| This model | GR600 · PT1" · 0.05 - 0.9 MPa (7 - 130 psi) |
|---|---|
| One size down | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Installed on a 1 in branch off the compressor room header, the regulator holds a fixed downstream pressure for a production section, with the check valve preventing backflow toward the header when the branch is isolated.
Feeding clamping cylinders on a fabrication press, the unit lets the setter dial in and read the clamping pressure on the square MPa gauge so the tooling closes at the pressure the process sheet calls for.
Placed ahead of the spray-booth air drops in an automotive paint line, the regulator keeps supply pressure to the guns steady even as other booths on the same 1 in main draw air.
Start with the port and the flow demand: GR comes in sizes 200, 300, 400 and 600, and this 600 size with 1 in ports is the step to take when the line serves large actuators, multiple drops or a whole section of a plant. Match the thread to your pipework: PT is the standard, with G (BSPP) and NPT available as orderable options - this unit is NPT. Choose the gauge scale you want to read (MPa, psi or bar) and whether the embedded square gauge or the optional external round gauge suits your panel; this configuration is square, MPa. Decide whether the reverse (check) valve should be fitted - it is on this unit - and whether the standard range (0.05-0.9 MPa) or the low-pressure type (up to 0.4 MPa) matches your setpoint. A bracket is included, and GR can also be panel-mounted.
One honest note on sizing: AirTAC publishes GR flow as curves, not as a single rated number, so we do not quote a flow figure here. Send us your application details and we will confirm the sizing against the datasheet curves before you order.
Quick checklist
The reflux valve lets air flow back through the regulator, which is useful when downstream volume must vent quickly. A regulator does not remove water or particulate; that is the filter's job.
AirTAC publishes GR flow as curves in the catalogue rather than as a single rated figure, so we do not state a flow number here. Tell us your line pressure, set pressure and estimated air demand, and we will confirm the sizing from the datasheet curves on request before you order.
F1 means an embedded square pressure gauge is fitted with an MPa scale; K means a reverse (check) valve is built in. Both are orderable choices: the gauge can be specified with psi or bar scales or as an optional external round gauge, and the reverse valve can be omitted. Thread is also a choice - PT is standard, with G (BSPP) and NPT (as on this unit) available as options.
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.