The AirTAC GR40015LJC2TK AirTAC Air Pressure Regulator NPT 1/2 in 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 GR40015LJC2TK is an AirTAC GR400 air pressure regulator: it does one job, holding downstream pressure steady from a compressed-air supply. This configuration is the low-pressure type, adjustable up to 0.4 MPa, in the size-400 body with 1/2 in NPT ports. It carries a round pressure gauge reading in psi, a built-in reverse (check) valve that lets downstream air hold when upstream supply drops, and it is supplied without a mounting bracket - the GR body is also panel-mountable. As a pure regulator it contains no filter, no bowl and no drain, so it must be fed by clean, dry air.
This is a genuine AirTAC part. The GR family runs from size 200 to 600 with port sizes from 1/8 in to 1 in, in standard or low-pressure versions, with a choice of gauge type and scale, optional reverse valve, and PT (standard), G or NPT threads to order. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GR40015LJC2TK AirTAC Air Pressure Regulator NPT 1/2 in |
|---|---|
| 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 | 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 | 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.
| 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. |
| 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 | 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 |
Feeds atomizing air to spray guns on a finishing line where the gun manufacturer calls for a low, stable supply pressure - the low-pressure type keeps the setpoint within its up-to-0.4 MPa window, and the psi gauge lets the operator verify the setting at a glance.
Supplies regulated low-pressure air to heat-seal or vacuum-assist actuators on a packaging line, where the check valve holds the downstream circuit steady during brief upstream pressure dips between machine cycles.
Drops main header pressure to the gentle clamp force that delicate workpieces need on a panel-processing line - the low-pressure adjustment range matches setpoints that a standard regulator cannot reach, and the 1/2 in ports feed multiple clamp cylinders from one station.
Start with the port step: size 400 with 1/2 in NPT ports suits lines where the required air demand is beyond the smaller 200/300 bodies - match the size to the flow your circuit needs. Choose the low-pressure (L) type only when your setpoint sits below 0.4 MPa; for settings up to 0.9 MPa take the standard GR version instead. The C2 code here means the round external gauge with a psi scale; square embedded gauges and MPa or bar scales are also available. Thread is NPT on this unit - PT is the catalogue standard and G is the other order option. The J code omits the mounting bracket; add it back if you want panel or surface fixing. Because flow is published as curves and not a single rating, 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 GR flow as curves, not as a single rated number, so there is no one flow figure we can honestly quote. Tell us your supply pressure, setpoint and the air demand of your circuit, and we will confirm the datasheet curve figures for this exact model on request before you order.
The L in the code makes this the low-pressure version: its adjustment range tops out at 0.4 MPa, which suits circuits that must never see full line pressure - use the standard GR400 if you need settings up to 0.9 MPa. C2 adds the round external gauge with a psi scale, K fits a reverse (check) valve that holds downstream pressure if the supply drops, J omits the mounting bracket, and T sets the thread to NPT.
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.