The AirTAC GR30008F2TK AirTAC Air Pressure Regulator NPT1/4 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 PT1/4" 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 GR30008F2TK is an AirTAC GR300 series air pressure regulator for compressed air, and regulation is the only job it does - there is no filter element, no drain bowl and no lubricator in this unit. This configuration is decodes to a 1/4 in NPT port, a standard-type regulator with an adjustment range of 0.05-0.9 MPa (7-130 psi), an embedded square pressure gauge scaled in psi, a built-in reverse/check valve, and a mounting bracket included (the GR300 can also be panel-mounted). Maximum working (inlet) pressure is 1.0 MPa (145 psi), and the GR series carries the widest temperature window in the G family at -20 to 70 C.
This is a genuine AirTAC part. The GR line is published in four sizes (200 / 300 / 400 / 600) with port sizes from 1/8 in to 1 in, and each size can be ordered with a low-pressure type, different gauge scales, a reverse/check valve, and PT, G or NPT threads. Flow is published in the catalogue as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures against your application on request.
| Model | GR30008F2TK AirTAC Air Pressure Regulator NPT1/4 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/4" (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, psi 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.
| GR300 | G-series pressure regulator, 300 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (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. |
| 2 | Gauge scale: psi. 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 | GR300 · PT1/4" · 0.05 - 0.9 MPa (7 - 130 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
A fixture clamp cylinder needs a steady, repeatable holding pressure independent of shop-air swings. The GR30008F2TK sits in the 1/4 in NPT drop to the clamp valve, its psi gauge letting the setter dial in and verify the clamp setting, while the built-in check valve holds the downstream setting if upstream pressure dips.
Small pneumatic actuators on a cartoning or case-sealing line run best at a fixed, moderate pressure. This regulator takes the 1/4 in NPT branch feeding those actuators and holds the set point across shift-long pressure fluctuations, with the square psi gauge giving operators a visible reference at the machine.
Tool clamping and workholding pods on a machining centre demand a stable, known pressure for safe operation. Installed in the 1/4 in NPT feed to that circuit, the GR30008F2TK provides precise adjustment between 0.05 and 0.9 MPa, and its reverse/check valve protects the set pressure in the retained volume.
Start with the size and port: GR300 with a 1/4 in port is the mid step of the range, and the right choice depends on the air consumption of the circuit it feeds - if your demand is near the top of what a 1/4 in line can carry, step up to GR400. Set the outlet pressure inside the 0.05-0.9 MPa (7-130 psi) range; if your process runs below roughly 0.4 MPa, the low-pressure (L) version of the GR is worth considering. This unit ships configured with an embedded square gauge in psi - MPa and bar scales are available, and an external round gauge is an option. The trailing T in the code fixes the thread as NPT; PT is the catalogue standard and G (BSPP) is also orderable, so match the thread to your piping. The K in the code means a reverse/check valve is already fitted, and the bracket is included. One honest note before you order: AirTAC publishes regulator flow as curves, not a single rated number, so send us your line pressure, set pressure and expected air demand and we will confirm the sizing from the datasheet.
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 regulator flow as performance curves in the catalogue, not as a single rated number, so we will not quote you a figure that is not in the datasheet. Send us your inlet pressure, set pressure and expected air consumption, and we will confirm the sizing from the datasheet curves on request.
The F2 in GR30008F2TK decodes to the embedded square gauge fitted and scaled in psi (MPa and bar scales are also available, and an external round gauge is an option). The K means a reverse/check valve is fitted as standard on this unit. The T sets the thread as NPT; PT is the catalogue standard thread and G (BSPP) is an orderable option.
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.