The AirTAC GR40015F2GK AirTAC Air Regulator G1/2, Square Gauge, psi is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.9 MPa (7 - 130 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 GR40015F2GK is an AirTAC GR400 air pressure regulator for compressed air, built around one job only: holding your set downstream pressure steady as demand changes. This configuration is the 400 size with a 1/2 in G (BSPP) port, the standard regulator type with an adjustment range of 0.05-0.9 MPa (7-130 psi), a fitted embedded square gauge reading in psi, and a built-in reverse (check) valve so downstream pressure is held if the supply side drops. A mounting bracket is included, and the GR400 can also be panel-mounted. Because it is a pure regulator, it contains no filter element and no bowl - pair it upstream with a filter if the air needs cleaning.
This is a genuine AirTAC part. The GR family spans the 200, 300, 400 and 600 sizes with ports from 1/8 in to 1 in, square or round gauges in MPa, psi or bar scales, a low-pressure type option, an optional reverse valve, and G or NPT thread variants alongside the PT standard. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GR40015F2GK AirTAC Air Regulator G1/2, Square Gauge, psi |
|---|---|
| Series | GR400 pressure regulator |
| Port size | PT1/2" (G (BSPP) thread) |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Standard 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 — square, 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". |
| (blank) | Standard type — 0.05 - 0.9 MPa (7 - 130 psi). Blank is standard, L is the low-pressure type. |
| (blank) | Fixing bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. 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. |
| 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 - 0.9 MPa (7 - 130 psi) |
|---|---|
| One size down | GR300 |
| One size up | GR600 |
| Line order | Filter first, then regulator, then lubricator |
Set and hold a repeatable working pressure for pneumatic clamp and press cylinders on an assembly line, so every cycle clamps at the same setpoint even as plant air pressure wanders.
Feed a packaging machine's sealing and forming actuators from a regulated branch, keeping the set pressure stable across shift-long running and protecting downstream components from supply surges.
Provide an adjustable, gauge-monitored air supply on a test bench or laboratory rig, where the operator dials in a set pressure in psi and the check valve holds the setting if the main supply dips.
Start with the port and size: the GR400 in 1/2 in covers mid-to-large branch lines, and the right step is chosen against the flow your line actually draws - we confirm that from the published curves on request. Decide the gauge: this unit ships with the embedded square gauge in psi scale; round external gauges and MPa or bar scales are the alternatives. Choose the thread: PT is the catalogue standard, with G (BSPP, as coded here) and NPT available as order options. A reverse/check valve is fitted on this code; the low-pressure type (up to 0.4 MPa) and the no-bracket variant are the other decodable choices. Because flow is published as curves rather than a single rating, 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.
We do not quote a single rated flow figure, because AirTAC publishes GR-series performance as flow curves rather than one number. Tell us your line pressure, set pressure and the flow your application draws, and we will confirm the sizing from the datasheet on request before you order.
K means a reverse (check) valve is fitted, so downstream pressure is retained if the upstream supply drops. The 2 in F2 selects the embedded square gauge with a psi scale; MPa or bar scales and an external round gauge are the other catalogue options. The G in the code is the 1/2 in G (BSPP) thread - PT is the standard thread, with G and NPT available to order.
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.