The AirTAC GR40015LC1T AirTAC Air Regulator NPT1/2 Low-Pressure 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 PT1/2" 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 GR40015LC1T is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from your compressed-air supply, and it does nothing else - no filtration, no bowl, no lubrication. This is the 400 size with a 1/2 in NPT port, built as the low-pressure (L) type, so its adjustment range tops out at 0.4 MPa for circuits that must never see full line pressure. The C1 suffix means an external round gauge with an MPa scale is fitted, so operators can read and set the outlet pressure directly. 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 line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, standard and low-pressure variants, gauge and no-gauge options, MPa/psi/bar scales, an optional reverse/check valve, and PT, G or NPT threads. Published flow data appears as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GR40015LC1T AirTAC Air Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GR400 pressure regulator |
| Port size | PT1/2" (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, 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.
| GR400 | G-series pressure regulator, 400 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 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. |
| 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 | GR400 · PT1/2" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR300 |
| One size up | GR600 |
| Line order | Filter first, then regulator, then lubricator |
On a machining fixture that clamps workpieces with air cylinders set well below full line pressure, this low-pressure regulator holds the clamp circuit at its required setting, with the round MPa gauge letting setters verify the pressure at a glance.
A paint or coating line that feeds spray equipment from a plant air main at 1/2 in line size uses this regulator to step the supply down to the gentle, stable pressure the process needs, protected by the 0.4 MPa low-pressure ceiling.
On a packaging machine where sealing bars or low-pressure actuators must not be driven at full header pressure, this GR400 unit trims the branch supply to a fixed setting, and the panel-mount option lets it sit alongside the machine's other controls.
Start with the port step: this unit is size 400 with a 1/2 in NPT thread, so match it to your line size and the flow your circuit needs - the larger the size, the larger the port and the more flow the family step offers. Because this is the L (low-pressure) type, choose it when the downstream setting must stay at or below 0.4 MPa; for settings up to 0.9 MPa, use the standard GR type instead. The fitted round gauge reads in MPa; psi and bar scales are catalogue options if your team works in other units. Thread is NPT here, with PT (the standard) and G available to order. A mounting bracket is included, and GR is also panel-mountable.
One honest note on sizing: flow for this series is published as curves, not as a single rated number, so we cannot quote you a rated flow figure. Tell us your application and we will confirm the datasheet curve figures against it before you order.
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.
We do not quote a single rated flow figure, because AirTAC publishes GR-series flow as curves rather than one rated number, and we will not estimate one. Send us your line pressure and the flow your circuit needs, and we will confirm the datasheet curve figures for this exact model on request before you order.
L marks the low-pressure type of regulator: its adjustment range tops out at 0.4 MPa instead of the standard GR range. Choose this version when the downstream circuit must never be set above 0.4 MPa; if you need settings up to 0.9 MPa, order the standard-type GR400 in the same size and thread instead.
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.