The AirTAC GR40015LC2T AirTAC Low-Pressure Air Regulator NPT1/2 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 GR40015LC2T is an AirTAC GR-series air pressure regulator: its only job is to hold a steady, reduced downstream air pressure from a compressed-air supply, with no filtering and no lubrication. This 400-size unit is decodes to a 1/2 in NPT port, and the L in the code marks it as the low-pressure type, adjusted up to 0.4 MPa - suited to circuits that must never see full line pressure. The C2 in the code means an external round gauge scaled in psi is fitted, so operators can read and set downstream pressure directly. Maximum inlet pressure is 1.0 MPa (145 psi), and the regulator works from -20 to 70 C, a wider temperature span than the rest of the G family.
This is a genuine AirTAC part. The GR line spans 200, 300, 400 and 600 sizes with 1/8 in to 1 in ports, standard and low-pressure (L) types, embedded square or external round gauges in MPa, psi or bar scales, a reverse/check valve option, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm datasheet figures against your application before ordering.
| Model | GR40015LC2T AirTAC Low-Pressure Air Regulator NPT1/2 |
|---|---|
| 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, 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. |
| (blank) | Fixing bracket included. |
| (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. |
| (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 packaging line where hot-melt or cold-glue heads are fed from a main header, this low-pressure regulator holds a gentle, stable supply pressure to the dispensing valves, with the psi gauge letting operators set the level the adhesive system was specified for.
Hold-down clamps and hold-offs on panel saws and CNC routers often need reduced air pressure so softwood stock is not crushed. This 400-size regulator with a 1/2 in NPT port sits on the clamp circuit and holds the set pressure across the shift.
Looms and texturing machines that use air jets for thread guidance run on deliberately low pressures. The L-type adjustment limit of 0.4 MPa on this regulator protects those jets from full header pressure, and the round psi gauge makes daily setting checks straightforward.
For a GR regulator, the real choices are size and port, pressure class, gauge and thread. Step up through 200/300/400/600 as your required flow and port size grow - this unit is the 400 size with a 1/2 in NPT port. Choosing the L (low-pressure) type caps the adjustment range at 0.4 MPa, so pick it only where downstream equipment is rated below standard regulator settings; otherwise the standard GR covers 0.05-0.9 MPa. Gauges come as the embedded square type or an external round gauge, in MPa, psi or bar - this code carries a round psi gauge. Threads: PT is the standard; G (BSPP) and NPT are catalogue options to order, as selected here. A mounting bracket is included, and GR is also panel-mountable.
One honest note on sizing: AirTAC publishes regulator flow as curves, not a single rated figure, so we do not quote a flow number. Tell us your application and we will confirm the datasheet curve and sizing 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 performance curves rather than a single rated figure, so we do not state a flow number here. Send us your inlet pressure, set pressure and required flow, and we will confirm the datasheet curve for the GR400 size and check it against your application before you order.
L marks the low-pressure type of the GR regulator: its adjustment range tops out at 0.4 MPa instead of the standard 0.05-0.9 MPa, so it suits circuits that must stay below normal regulator settings. The C2 in the code means an external round gauge scaled in psi is fitted; MPa and bar scales are also available as catalogue options.
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.