The AirTAC GR40015LF2GK AirTAC Air Regulator G1/2 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 GR40015LF2GK is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream air pressure from a compressed-air supply, and it carries no filter element and no bowl. This configuration is the low-pressure type, with an adjustment range up to 0.4 MPa, in the size-400 body with a G1/2 (BSPP) female port. It comes with an embedded square pressure gauge reading in psi (an external round gauge in MPa, psi or bar scales is an optional alternative), a reverse/check valve fitted so downstream pressure is held if the upstream supply drops, and a mounting bracket included; the GR size-400 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-series families.
This is a genuine AirTAC part from the GR regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, in standard and low-pressure types, with your choice of gauge, scale, thread (PT is the standard; G and NPT are order options), bracket and reverse/check valve. Flow is published by AirTAC as curves rather than a single rated figure, so ask us and we will confirm the flow and datasheet figures for this exact model against your application.
| Model | GR40015LF2GK AirTAC Air Regulator G1/2 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 | 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). |
| 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 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR300 |
| One size up | GR600 |
| Line order | Filter first, then regulator, then lubricator |
On a carton-sealing or case-erecting machine, low-pressure cylinders and grippers often need a gentler, tightly held supply than the main plant air. This low-pressure GR40015LF2GK regulates that branch up to 0.4 MPa at a 1/2-inch line size, and its check valve keeps the actuators from losing position if the main supply dips.
Bench-top test rigs, pneumatic test fixtures and lab apparatus frequently run at low, precisely held pressures. Feeding the bench through this regulator gives the operator a psi-reading square gauge at the panel, a 0.4 MPa ceiling suited to low-pressure work, and a 1/2-inch G-thread connection for a dedicated drop.
Air jets, tension rollers and air-bearing elements on textile and paper converting lines are sensitive to supply swings and typically run at low pressure. A GR40015LF2GK at the machine inlet holds that low setpoint, and the reverse/check valve prevents backflow disturbances when the section is isolated from the main header.
Start with the size and port: GR400 is the size-400 body and this unit has a G1/2 (BSPP) port, so check that it matches your line size and the air volume your circuit needs - step up or down through GR200, GR300, GR400 and GR600 as the port requirement changes. Choose the regulator type to match the pressure you actually need: this low-pressure (L) version adjusts up to 0.4 MPa, while the standard type covers 0.05-0.9 MPa. Decide on the gauge: this unit ships with the embedded square gauge in a psi scale, and MPa or bar scales, or an external round gauge, are available. Set the thread to your piping standard - PT is the catalogue standard, with G (BSPP) and NPT as order options - and keep the bracket (included here) unless you panel-mount. The reverse/check valve (K) is worth specifying wherever a dropped supply must not dump downstream pressure.
One honest note on sizing: AirTAC publishes GR flow as curves, not as a single rated number, so we do not quote a flow figure here. Tell us your line size, inlet pressure and set pressure, and we will confirm the flow and datasheet figures for the GR40015LF2GK 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 regulator flow as curves, not as a single rated figure, so we do not state a number here. Tell us your line size, inlet pressure and required set pressure, and we will confirm the flow and datasheet figures for this exact model against your application before you order.
The L in the code makes this the low-pressure type, adjustable up to 0.4 MPa, for circuits that never need the standard type's 0.05-0.9 MPa range. The rest of the code decodes as: size 400 with a G1/2 (BSPP) port (G thread; PT is the catalogue standard and NPT is also an order option), an embedded square gauge reading in psi, and a fitted reverse/check valve (K). A mounting bracket is included, and maximum inlet pressure is 1.0 MPa (145 psi) with a -20 to 70 C temperature range.
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.