The AirTAC GR40015LC1TK AirTAC Air Regulator NPT 1/2 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 GR40015LC1TK is an AirTAC GR-series air pressure regulator: it does one job, holding downstream pressure steady, and it contains no filter, no bowl and no lubricator. This 400-size unit is built around a 1/2 in NPT port and is the low-pressure (L) type, so its regulated output is adjusted within a range up to 0.4 MPa - suited to circuits that must not see full line pressure. Maximum inlet pressure is 1.0 MPa (145 psi), operating temperature is -20 to 70 C (the widest range in the G family), and the fitted reverse/check valve holds the downstream setting if upstream supply is interrupted. A round pressure gauge scaled in MPa is included, and the mounting bracket is supplied; the GR series is also panel-mountable.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in standard and low-pressure types, with gauge, thread and bracket options to match. Because AirTAC publishes regulator flow as curves rather than a single rated figure, we confirm the datasheet and flow figures for your application on request - just ask before ordering.
| Model | GR40015LC1TK AirTAC Air Regulator NPT 1/2 Low-Pressure |
|---|---|
| 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, MPa 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. |
| 1 | Gauge scale: MPa. 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 |
On a woodworking or machining cell, pneumatic hold-down clamps often need a gentle, stable clamping force rather than full line pressure. This low-pressure regulator lets the fixture circuit be set below 0.4 MPa and held there, while the check valve keeps the clamp from releasing if the main supply drops.
The actuator circuit on a carton sealer or case erector needs steady, moderate pressure so boxes are pressed and sealed consistently stroke after stroke. A 1/2 in low-pressure regulator at the station inlet keeps that circuit isolated from plant-line pressure swings.
Air-operated hold-down or indexing devices on a bottling or canning conveyor must grip lightweight containers without crushing them. Regulating that circuit to a low, stable setting protects the product, and the included bracket makes mounting beside the conveyor straightforward.
Start with the port step: the GR400 carries a 1/2 in port, one size up from the GR300 and one below the GR600, and the right choice depends on the air demand of the circuit downstream - larger sizes move more air, but flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering. This code is the low-pressure (L) type, which regulates up to 0.4 MPa; if your circuit needs the standard 0.05-0.9 MPa range, choose a GR without the L suffix. Other decodable choices: gauge scale (MPa, psi or bar) and round versus square style; thread (PT is the standard, with G/BSPP and NPT as catalogue options to order); and whether the mounting bracket is included. The K in this code adds a reverse/check valve, useful where a trapped downstream pressure must be held. Note that GR regulators have no bowl, so no drain choice applies.
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 performance curves rather than a single rated number, so we do not quote a flow figure. Send us your application details and we will confirm the datasheet and the flow curve for the GR400 at 1/2 in port on request, so you can size it against your actual air demand before ordering.
The L marks the low-pressure type of the GR regulator. A standard GR adjusts across 0.05-0.9 MPa, while the low-pressure type regulates up to 0.4 MPa, which suits circuits that must never see full line pressure. Maximum inlet pressure is still 1.0 MPa (145 psi), and the round gauge fitted to this unit is scaled in MPa so the setting can be read directly.
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.