The AirTAC GR20008LJF3TK 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 GR20008LJF3TK is an AirTAC GR200-series air pressure regulator for compressed air, built for circuits that must run at reduced pressure rather than full line pressure. As a low-pressure (L) type it regulates down to a maximum of 0.4 MPa, and it handles a maximum inlet pressure of 1.0 MPa (145 psi) with an operating temperature range of -20 to 70 C. This configuration is threaded NPT1/4 (1/4 in), and the T in the code is the NPT thread option - PT is the standard thread, with G and NPT available as catalogue options to order. A square pressure gauge scaled in bar is fitted as standard, a reverse/check valve is included, and the J code means no mounting bracket is supplied; the GR body is also panel-mountable.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600, with port sizes stepping up from 1/8 in to 1 in, so you can match the regulator to the line size and the pressure range your circuit needs. Flow is published in the AirTAC catalogue as curves rather than a single rated figure, so ask us and we will confirm the flow and datasheet figures for this exact model on request.
| Model | GR20008LJF3TK AirTAC Low-Pressure Regulator NPT1/4 |
|---|---|
| Series | GR200 pressure regulator |
| Port size | PT1/4" (NPT thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure type |
| Bracket | Supplied without bracket |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — square, bar 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.
| GR200 | G-series pressure regulator, 200 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". This body offers 06 = PT1/8", 08 = PT1/4". |
| L | Low-pressure type — 0.05 - 0.4 MPa (7 - 58 psi). Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 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 | GR200 · PT1/4" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size up | GR300 |
| Line order | Filter first, then regulator, then lubricator |
Set a reduced, stable supply pressure at the wall drop feeding spray guns and air-assisted applicators, where the coating process calls for lower-than-line pressure rather than full header pressure.
Feed the low-pressure branch of a cartoning or wrapping machine - sealing jaws, hold-downs and actuator circuits that are specified below main header pressure and need their own set point.
Regulate the clamp cylinders on a pneumatic workholding fixture so delicate parts are held at a controlled reduced pressure, with the check valve helping hold the setting if upstream supply dips.
Work through the real, decodable choices before ordering. First, size and port: the GR200 is the smallest step, and this unit carries a 1/4 in NPT port - step up through GR300, GR400 and GR600 if your line size or required flow curve calls for it. Second, regulator type: this is the low-pressure (L) type, regulating up to 0.4 MPa; if your circuit needs the standard range, the non-L GR variants regulate from 0.05 to 0.9 MPa. Third, gauge: the embedded square gauge is standard and this unit is scaled in bar, with MPa and psi scales available on other codes, and an external round gauge is optional. Fourth, thread: PT is the standard, while G (BSPP) and NPT are catalogue options you order explicitly - this unit is the NPT version. Fifth, mounting: the J code means no bracket; order a bracket variant if you need one, or use the panel-mount capability. Finally, the honest routing: flow is published as curves, not a single rating, so 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 GR-series flow as curves in the catalogue, not as a single rated number, so we do not quote a rated flow, Cv or SCFM figure for this model. Tell us your line size and application and we will confirm the flow from the datasheet on request before you order.
The L in the code marks the low-pressure type: it regulates up to 0.4 MPa, whereas standard GR units regulate from 0.05 to 0.9 MPa - choose this code only if your circuit runs at reduced pressure. The K in the code means a reverse/check valve is fitted, and the F3 means the embedded square gauge is scaled in bar.
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.