The AirTAC GR40015LC2TK AirTAC Air Pressure 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 GR40015LC2TK is an AirTAC GR-series air pressure regulator in size 400 with a 1/2 in NPT port. It is a low-pressure type, so its regulation range goes up to 0.4 MPa, and it carries a round pressure gauge scaled in psi plus a built-in reverse (check) valve that holds the downstream setting if upstream supply is interrupted. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -20 to 70 C, wider than the rest of the G family. As a regulator it performs pressure control only: there is no filter, no bowl and no drain in this unit.
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, PT as the standard thread and G (BSPP) or NPT as order options, with gauge, bracket and check-valve choices along the way. Flow is published as curves rather than a single rating, so we confirm the datasheet and flow figures for your application on request.
| Model | GR40015LC2TK AirTAC Air Pressure 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 | 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. |
| (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. |
| 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 |
Set a steady, reduced supply pressure to spray guns and air-assisted applicators on a finishing line, where the low-pressure range and psi gauge suit fine setpoint control at the booth.
Feed the low-pressure actuation circuit of a cartoning or wrapping machine, using the check valve to hold the set pressure against supply dips while sealers and clamps cycle.
Regulate clamp and hold-down cylinders on a machining cell fixture loop, keeping a fixed low setpoint on the 1/2 in supply line with local psi indication at the panel.
Start with the port step: this unit is size 400 with a 1/2 in NPT thread, one step up from 3/8 in and one below 3/4 in, so match it to the line size your flow path actually uses. The L code makes this the low-pressure type with regulation up to 0.4 MPa, so pick it when your circuit must hold a setting below that ceiling; for higher setpoints choose the standard GR type. This configuration includes a round gauge scaled in psi and a reverse (check) valve; the standard alternative is an embedded square gauge, with MPa or bar scales available. Thread is NPT here, with PT standard and G (BSPP) as order options, and a mounting bracket is included (the GR is also panel-mountable). Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
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 regulator flow as curves rather than a single rated figure, so we do not quote a number. Tell us your line size, inlet pressure and setpoint and we will confirm the flow curves and datasheet figures for this exact model on request.
The K in the code GR40015LC2TK means a reverse (check) valve is fitted, which holds the downstream setting if upstream supply drops, and C2 means a round gauge scaled in psi is included. The standard alternative is an embedded square gauge, with MPa or bar scales available as order 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.