The AirTAC GR30010LC3T AirTAC Low-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 GR30010LC3T is an AirTAC GR-series air pressure regulator, a genuine AirTAC part built for one job: holding a steady downstream pressure from a compressed-air supply. This is the low-pressure type (L) of the size 300 body, so its regulation range tops out at 0.4 MPa - suited to circuits that must never see full line pressure. It carries 3/8 in NPT ports (the T suffix; PT is the standard thread and G/NPT are order options), an external round pressure gauge reading in bar, and comes with a mounting bracket. As a GR unit it contains no filter, no bowl and no drain - it regulates pressure only.
AirTAC makes the GR family in sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in, standard and low-pressure regulation types, gauge choices, and optional reverse/check valve (K) or no-bracket (J) variants. Maximum working (inlet) pressure is 1.0 MPa (145 psi), and the GR temperature range is -20 to 70 C, wider than the rest of the G family. Flow is published as curves rather than a single rated figure, so we confirm flow and datasheet figures on request before you order.
| Model | GR30010LC3T AirTAC Low-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 | Fixing bracket included |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — round, bar 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. |
| (blank) | Fixing bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. 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. |
| (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 |
Feeding pneumatic clamp or gate cylinders on a carton-sealing line that are rated below full header pressure; the low-pressure type caps the downstream circuit at 0.4 MPa so operators cannot over-pressurise the actuators.
Trimming supply pressure to atomising air or low-pressure blow-off manifolds in a paint or coating booth, where a stable, limited setting is needed and the bar-scale round gauge lets technicians read the set-point directly.
Regulating air to light-duty gate or divertor cylinders at a conveyor divert station in a food or beverage plant, where the -20 to 70 C GR temperature range and panel-mount option suit washdown-adjacent control panels.
Pick the GR size by the port and flow step your line needs: this unit is size 300 with 3/8 in NPT ports. Choose the standard type for regulation up to 0.9 MPa, or the low-pressure type (L, as here) when the circuit must be capped at 0.4 MPa. Gauge options are the embedded square gauge or an external round gauge, with MPa, psi or bar scales - this configuration has a round gauge on bar. Thread is PT as standard; G (BSPP) and NPT are catalogue options to order, and this code specifies NPT. The bracket is included, and GR is also panel-mountable.
Because AirTAC publishes flow as curves rather than a single rated number, ask us to confirm sizing against your application's flow demand before ordering - we will pull the datasheet figure for you.
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-series flow as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application's flow demand and we will confirm the sizing from the datasheet on request before you order.
L marks the low-pressure type: its regulation range tops out at 0.4 MPa instead of the standard GR range of 0.05-0.9 MPa. Use it where the downstream circuit must never be set above 0.4 MPa. This unit also decodes as size 300, 3/8 in NPT ports, round gauge on bar scale, bracket included, and no reverse/check valve.
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.