The AirTAC GR30015LJF1TK AirTAC Regulator NPT1/2 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 GR30015LJF1TK is an AirTAC GR-series air pressure regulator: it does one job, holding downstream pressure steady from a compressed-air supply. This configuration is the size 300 body with a 1/2 in NPT port, the low-pressure type (L) whose setting range tops out at 0.4 MPa, a fitted embedded square gauge scaled in MPa, and a reverse/check valve (K) that holds the downstream setting if upstream supply is interrupted. No bracket is fitted (J), and as a GR unit the body is 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, standard or low-pressure types, gauge and thread options, and an optional reverse/check valve. Max 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. Flow is published as curves rather than a single rating, so we confirm flow and datasheet figures on request.
| Model | GR30015LJF1TK AirTAC Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/2" (NPT thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure type |
| Bracket | Supplied without bracket |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — square, 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.
| GR300 | G-series pressure regulator, 300 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 08 = PT1/4", 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. 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 | GR300 · PT1/2" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Machining fixtures and clamps often need a held, moderate pressure well below line pressure. This low-pressure GR regulates the clamp circuit up to 0.4 MPa, and the check valve holds the setting if the main supply drops.
Hold-down pads and light pushers on packaging conveyors run at low pressures to avoid crushing product. The GR30015LJF1TK regulates that 1/2 in supply line, with the square MPa gauge giving operators a clear setting reference.
Test benches and laboratory apparatus fed from a shop-air header need a stable, low regulated pressure. This regulator sets the bench supply up to 0.4 MPa, and the reverse/check valve keeps the downstream pressure steady during supply dips.
Choose the size and port step against the air demand of the circuit: this unit is size 300 with a 1/2 in NPT port; smaller or larger GR sizes step the port from 1/8 in to 1 in. Because this is the low-pressure (L) type, it suits circuits regulated up to 0.4 MPa; the standard GR covers up to 0.9 MPa. The square gauge here reads in MPa, with psi or bar scales available as alternatives, and an external round gauge is an option. Thread is NPT on this code; PT is the standard and G (BSPP) is also an order option. No bracket is fitted, but the GR body is 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.
Flow for the GR series is published as curves, not as a single rated figure, so we do not quote a number. Tell us your application and we will confirm the flow and the full datasheet for this model on request before you order.
The L in the code marks the low-pressure type, whose setting range goes up to 0.4 MPa. If your circuit needs a higher setting, the standard GR300 in the same size covers up to 0.9 MPa - ask us and we will quote the standard-type equivalent.
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.