The AirTAC GR30008LF2K AirTAC Low-Pressure Regulator, PT1/4 is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.4 MPa (7 - 58 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 GR30008LF2K is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from your compressed-air supply. This is the low-pressure type, adjusted within a range up to 0.4 MPa, in the 300 size with PT1/4 (1/4 in) ports. The embedded square gauge reads in psi so operators can set and check the line at a glance, and the fitted reverse (check) valve helps hold the downstream setting if upstream supply is interrupted. A mounting bracket is included, and the GR body is also panel-mountable.
This is a genuine AirTAC part. The GR family spans the 200, 300, 400 and 600 sizes with port sizes from 1/8 in up to 1 in, in standard and low-pressure types, with gauge scale, thread (PT standard; G and NPT as order options) and check-valve choices to match. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application before ordering.
| Model | GR30008LF2K AirTAC Low-Pressure Regulator, PT1/4 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/4" (PT thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure 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". |
| L | Low-pressure type — 0.05 - 0.4 MPa (7 - 58 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. |
| (blank) | PT 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 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Sets a gentle, stable supply pressure to spray guns and atomising air on a paint or coating line, where settings stay within the low-pressure band and the psi gauge makes daily set-up straightforward.
Regulates air to light clamping and hold-down cylinders on a packaging or cartoning machine, with the check valve helping preserve the downstream setting if the main supply dips.
Provides a trimmed, low-pressure air feed to bench-top test rigs and lab apparatus, with panel mounting and a psi-scale gauge suiting instrument-panel installation.
Start with the port and size: this unit is 300 size with PT1/4 (1/4 in) PT thread - step up or down through the 200/300/400/600 range if your line needs a larger or smaller connection. Because this is the L (low-pressure) type, it suits circuits set up to 0.4 MPa; if you need settings above that, choose the standard GR type instead. The K code means the reverse/check valve is fitted - leave it off if you do not need downstream hold-up. The square gauge here is scaled in psi; MPa and bar scales are available if your team works in those units. Thread is PT as standard, with G (BSPP) and NPT as catalogue options to order, and a bracket is included (GR is also panel-mountable). Flow is published as curves, not a single rated figure, so send us your application details and we will confirm sizing from the datasheet 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-series flow as performance curves rather than a single rated figure, so we do not quote a number on the page. Tell us your inlet pressure and required downstream condition and we will confirm the sizing from the datasheet on request before you order.
L is the low-pressure regulator type, adjustable up to 0.4 MPa instead of the standard range. F2 is the embedded square gauge scaled in psi (MPa and bar scales are also available). K means the reverse/check valve is fitted. Thread is PT as standard, with G (BSPP) and NPT available as order options.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.