The AirTAC GR30008LF2TK AirTAC Low-Pressure Regulator, NPT1/4 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 GR30008LF2TK is an AirTAC GR300 air pressure regulator in the low-pressure (L) configuration, built purely for pressure regulation - it contains no filter, no bowl and no lubricator. This unit decodes to a 1/4 in NPT port, an embedded square pressure gauge reading in psi, a fitted reverse/check valve, and a mounting bracket included as standard (the GR series is also panel-mountable). The low-pressure type covers regulation up to 0.4 MPa, with a maximum working (inlet) pressure of 1.0 MPa (145 psi), and an operating temperature range of -20 to 70 C - wider than the rest of the G family.
This is a genuine AirTAC part. The GR series is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in standard or low-pressure types, with or without a gauge (MPa, psi or bar scales), with an optional reverse/check valve, and in PT (standard), G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GR30008LF2TK AirTAC Low-Pressure Regulator, NPT1/4 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/4" (NPT 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. |
| 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 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Setting a gentle, repeatable holding pressure for delicate clamp or hold-down cylinders where the downstream setpoint must stay at or below 0.4 MPa; the check valve holds the setting if supply pressure dips.
Regulating low-pressure atomizing or blow-off air to spray guns and air knives, with the psi-scaled square gauge giving operators a direct local readout at the point of use.
Feeding positioners and pilot-operated process valves on a process skid with a steady low-pressure air supply, panel-mounted beside the instrumentation with the included bracket.
Start with the port step: this GR300 unit is the 1/4 in size in the GR range, which steps up through 300/400/600 as ports grow from 1/8 in to 1 in - match the size to the air demand of the circuit rather than oversizing on price alone. Choose the low-pressure (L) type only where the downstream setting must stay at or below 0.4 MPa; the standard GR type covers the full 0.05-0.9 MPa range. This unit ships as coded with a square gauge in psi, a fitted reverse/check valve to hold downstream pressure against backflow, and a bracket included (panel mounting is also possible). Thread is NPT here; PT is the catalogue standard and G is available to order.
One honest note on sizing: AirTAC publishes regulator flow as curves, not as a single rated number, so we do not quote a flow figure for this unit. 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 regulator flow as curves in the datasheet, not as a single rated figure, so we do not quote a flow number for this unit. Tell us your application - port size, upstream pressure and downstream demand - and we will confirm the sizing from the datasheet curves on request before you order.
L marks the low-pressure type of the GR series. It regulates up to 0.4 MPa, instead of the standard type's 0.05-0.9 MPa range, so it is for circuits that must never be set higher. Everything else decodes as usual: 300 size with a 1/4 in NPT port, square psi gauge fitted, reverse/check valve fitted, bracket included, and an operating range of -20 to 70 C with a maximum inlet pressure of 1.0 MPa (145 psi).
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.