The AirTAC GR30010LJF2TK AirTAC Air Pressure Regulator NPT3/8 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 PT3/8" 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 AirTAC GR30010LJF2TK is a genuine AirTAC air pressure regulator: it controls downstream air pressure only, with no filter and no lubrication function. This 300-size unit is supplied with 3/8 in NPT ports, is the low-pressure type with an adjustment range up to 0.4 MPa, and carries an embedded square gauge reading in psi. The built-in reverse (check) valve blocks backflow through the unit, and the J code means no mounting bracket is fitted, though the GR body is also panel-mountable. 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 family.
This is a genuine AirTAC part. The GR series spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in standard and low-pressure types, with gauge, thread (PT standard; G and NPT as order options), bracket and reverse-valve choices. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GR30010LJF2TK AirTAC Air Pressure Regulator NPT3/8 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT3/8" (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, 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| J | Supplied without bracket. |
| (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 · PT3/8" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Holds a steady, reduced pressure to the clamping cylinders on a CNC fixture line, with the check valve stopping backflow from upsetting the set point.
Drops shop air to the lower pressure a spray gun or coating line runs at, with the psi gauge giving the operator a direct reading at the booth.
Supplies gentle, controlled air to lab bench apparatus or a pilot-scale process where pressure must stay at or below 0.4 MPa.
Size the GR by port and expected flow: this 300-size unit has 3/8 in NPT ports, one step up from 1/4 in, for lines that need more air than a 200 can pass. Choose the low-pressure (L) type, as here, when your process must be held at or below 0.4 MPa; the standard type covers the full 0.05-0.9 MPa range. This unit ships configured with a square gauge on the psi scale, an NPT thread (PT is the AirTAC standard; G and NPT are order options), no mounting bracket, and a reverse/check valve fitted. Flow is published as curves, not a single rating, so send us your application details and we will confirm sizing against 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 regulator flow as curves rather than a single rated figure, so we do not quote a number here. Tell us your inlet pressure, set pressure and expected air demand, and we will confirm the datasheet flow curve for this exact model on request before you order.
The L in the code marks the low-pressure version: its adjustment range tops out at 0.4 MPa instead of the standard type's 0.05-0.9 MPa. It is the right choice when your process must never be set above 0.4 MPa. Maximum inlet pressure is still 1.0 MPa (145 psi), and the square gauge on this unit reads in 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.