The AirTAC GR30008LF1TK 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 GR30008LF1TK is an AirTAC GR-series air pressure regulator - a regulation-only unit with no filter element and no bowl. This configuration is the low-pressure type, adjustable up to 0.4 MPa, with a 1/4 in NPT port. It ships as a genuine AirTAC part with an embedded square gauge scaled in MPa (an external round gauge is an option), a reverse/check valve fitted, and a mounting bracket included; the GR body is also panel-mountable.
The GR family spans the 200, 300, 400 and 600 sizes with port options from 1/8 in to 1 in, and thread choices of PT (standard), G (BSPP) or NPT. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -20 to 70 C - wider than the rest of the G series. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing or any datasheet figure on request.
| Model | GR30008LF1TK 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, 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.
| 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. |
| 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 | 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 |
Air cylinders that hold delicate workpieces in a machining or assembly cell often need a setpoint well below normal line pressure. This low-pressure GR regulator, with its MPa gauge and check valve, holds that gentle clamp pressure between cycles.
Finishing booths run atomising air at reduced pressure for consistent coating quality. A low-pressure regulator at each gun station keeps the setpoint in the sub-0.4 MPa band, with the square gauge giving the operator a direct MPa reading.
Pilot-operated valves and low-pressure actuators on carton-sealing and wrapping machines need a stable, reduced supply independent of the main header. This 1/4 in NPT regulator with check valve protects the pilot circuit from upstream pressure swings.
Start with the size and port: 200/300/400/600 step up in port and flow capacity, and this unit is the 300 size with a 1/4 in NPT port. Choose the low-pressure type (L) when your setpoint stays at or below 0.4 MPa, as here, or the standard type for the full 0.05-0.9 MPa range. Gauge options are the embedded square gauge (this code, MPa scale) or an external round gauge, with MPa, psi or bar scales. Thread is PT as standard; G (BSPP) and NPT are catalogue options to order. A bracket can be included or omitted (code J), and the reverse/check valve (K) is fitted on this unit.
Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
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 rather than a single rated figure, so there is no one rated-flow number we can quote. Tell us your application and we will confirm the flow data from the datasheet on request before you order.
The L in GR30008LF1TK marks the low-pressure regulator type, adjustable up to 0.4 MPa. Choose it when your setpoint stays in that band; for the full 0.05-0.9 MPa range, order the standard GR type instead. Everything else in this code - NPT1/4 port, square MPa gauge, check valve (K), bracket included - is unchanged.
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.