The AirTAC GR30010LJF1T 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 GR30010LJF1T is a pressure regulator for compressed air only. It reduces and holds downstream pressure with an adjustment range of up to 0.4 MPa, because the L in the code marks the low-pressure type. Maximum inlet pressure is 1.0 MPa (145 psi), operating temperature is -20 to 70 C, and the 300 size comes with NPT3/8 ports. The embedded square gauge fitted as standard reads in MPa, no bracket is fitted, and the unit can also be panel-mounted.
This is a genuine AirTAC part from the GR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8" to 1". Across the range you can order standard or low-pressure types, gauge scales in MPa, psi or bar, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application.
| Model | GR30010LJF1T 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, MPa scale |
| Reflux valve | Not fitted |
| 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. |
| 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. |
| (blank) | No reverse-flow valve (the default). |
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 |
Sits in the air line feeding spray guns on a paint or coating line, holding a gentle, steady regulated pressure so atomising air stays consistent across a shift.
Regulates the low-pressure air that actuates glue applicators on a packaging line, keeping the dispensing stroke soft and repeatable without overdriving the heads.
Provides the reduced, stable pressure for pneumatic hold-down clamps on a machining fixture, so delicate workpieces are secured without being crushed.
Pick the GR size by the port and flow your line needs: sizes 200 through 600 step up from 1/8" to 1" ports. Choose the standard type for adjustment up to 0.9 MPa, or this L (low-pressure) type where the circuit never exceeds 0.4 MPa. Gauge scale (MPa, psi or bar), thread (PT as standard, G or NPT to order) and bracket are all decodable options. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
Quick checklist
Without a reflux valve, air cannot flow back through the regulator — order the K option if reverse flow is required. A regulator does not remove water or particulate; that is the filter's job.
AirTAC publishes GR flow as curves rather than a single rated figure, so we do not quote a number here. Tell us your line pressure, downstream pressure and expected air demand, and we will confirm the sizing from the datasheet on request before you order.
The L in the model code marks the low-pressure type, which adjusts up to 0.4 MPa. If your circuit needs the full 0.05-0.9 MPa range, order the standard GR300 version instead; both are available in the same sizes and port 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.