The AirTAC GR40015LF2G AirTAC Air Regulator 1/2 in Low-Pressure 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 GR40015LF2G is an AirTAC GR400 air pressure regulator built for regulation only: it steps a compressed-air supply down to a stable, adjustable working pressure and carries no filter, no bowl and no lubricator. This unit is the low-pressure type, so its adjustment range tops out at 0.4 MPa, and it is fitted with an embedded square gauge scaled in psi so operators can read and set the downstream pressure directly at the unit. The 1/2 in port (G thread) suits larger branch lines, a mounting bracket is included, and the body is also panel-mountable. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -20 to 70 C, wider than the rest of the G family.
This is a genuine AirTAC part. The GR series spans four sizes (200, 300, 400, 600) with port sizes from 1/8 in to 1 in, standard and low-pressure adjustment ranges, gauge and no-gauge variants, psi/MPa/bar gauge scales, PT, G and NPT threads, and an optional reverse/check valve. Because AirTAC publishes regulator flow as curves rather than a single rated figure, we confirm the flow and datasheet figures for your application on request - just ask before ordering.
| Model | GR40015LF2G AirTAC Air Regulator 1/2 in Low-Pressure |
|---|---|
| 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 | 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 | 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). |
| 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. |
| (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 |
Sets a gentle, stable low-pressure air supply to spray-gun atomizing circuits, where the coating specifies a lower working pressure than a standard 0.9 MPa regulator delivers.
Regulates the low-pressure air feeding heat-seal clamp and hold-down cylinders on a packaging machine, with the psi gauge letting line staff verify set pressure at a glance.
Trims supply pressure down for gentle pneumatic conveying and purging lines on a laboratory or pilot-plant transfer skid, where delicate material demands a low, repeatable setpoint.
Start with the port step: GR comes in sizes 200, 300, 400 and 600, and this unit is size 400 with a 1/2 in G-thread port - step up or down a size if your line flow demands it, and we will confirm the flow curve against your requirement. Next, choose the regulator type: this is the low-pressure (L) variant, adjustable up to 0.4 MPa; if your process needs up to 0.9 MPa, the standard GR type is the right pick instead. The embedded square gauge here is scaled in psi; MPa and bar scales, and an external round gauge, are available. Thread is G (BSPP) on this unit - PT is the standard thread and G or NPT are catalogue options to order. A mounting bracket is included, and GR can also be panel-mounted. A reverse/check valve (code K) is not fitted on this model. Because flow is published as curves and not a single rating, ask us to confirm sizing against your application before ordering.
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, not as a single rated number, so we do not quote a flow figure for this unit. Send us your line pressure, set pressure and required air consumption, and we will confirm the flow from the datasheet curve for the GR400 size on request before you order.
The L in the code makes this the low-pressure type, adjustable up to 0.4 MPa; the standard GR type (no L) adjusts up to 0.9 MPa, so pick that if you need higher setpoints. The embedded square gauge on this unit is scaled in psi; MPa and bar scales are 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.