The AirTAC GR40015LJC2G AirTAC Air Pressure Regulator, G1/2 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 GR40015LJC2G is an AirTAC GR400 air pressure regulator for compressed air, built for applications that need a controlled downstream pressure well below full line pressure. This is the low-pressure type, so the setpoint can be adjusted up to 0.4 MPa, and the unit is fitted with an external round gauge reading in psi so operators can see and hold the setting at a glance. The 1/2 inch G-threaded port (BSPP) suits larger supply lines, and the regulator carries no mounting bracket, so it can be panel-mounted where the installation calls for it.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, in standard or low-pressure types, with embedded square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures against your application before ordering.
| Model | GR40015LJC2G AirTAC Air Pressure Regulator, G1/2 |
|---|---|
| Series | GR400 pressure regulator |
| Port size | PT1/2" (G (BSPP) 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 — round, psi 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| G | G (BSPP) 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 |
Settling a stable, reduced supply pressure to spray guns and air-assisted applicators, where the low-pressure adjustment range up to 0.4 MPa matches typical coating-line settings and the round psi gauge lets the operator verify the setpoint.
Regulating the air feeding pneumatic clamps and hold-downs on a cartoning or case-packing line, so delicate products are gripped at a controlled pressure instead of full line pressure, with the 1/2 inch port serving the machine's main drop.
Trimming the pressure on a low-pressure air header serving looms and blowing nozzles in a textile plant, where the low-pressure type keeps the setpoint in its intended band and the psi gauge supports routine line checks.
Start with the port step: GR comes in sizes 200, 300, 400 and 600, and larger sizes take larger ports and suit higher air demand - this unit is size 400 with a 1/2 inch G (BSPP) port. Choose the type by setpoint: the standard type adjusts up to 0.9 MPa, while the low-pressure type (L) used here covers settings up to 0.4 MPa. Pick the gauge style and scale - embedded square or external round, in MPa, psi or bar; this unit has a round psi gauge. Threads are PT as standard with G and NPT as order options, and a mounting bracket is optional (this configuration has none; GR is also panel-mountable).
Because flow is published as curves and not as a single rated number, we cannot honestly quote one figure here. Send us your line size and air demand and we will confirm sizing from the datasheet 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.
AirTAC publishes regulator flow as curves rather than a single rated figure, so there is no honest one-number answer. We will confirm the flow data from the datasheet against your line size and air demand on request - just ask before ordering.
The L in the code marks the low-pressure type: its adjustment range tops out at 0.4 MPa, compared with 0.05-0.9 MPa for the standard GR type. It is the right choice when your process needs a reduced, controlled pressure; if you need settings above 0.4 MPa, choose a standard-type GR 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.