The AirTAC GR30015LF2G AirTAC Low-Pressure Air Regulator G1/2 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 GR30015LF2G is an AirTAC GR-series air pressure regulator: it does one job, holding your downstream compressed-air pressure steady at the setpoint you dial in. This is the low-pressure (L) type, so its adjustment range tops out at 0.4 MPa - the right choice for circuits that must never see full line pressure, such as low-pressure actuation or sensitive tooling. The 300 size with a G1/2 (BSPP) port suits medium-flow branch lines, and the trailing G in the code specifies the G-thread version; PT is the standard thread and NPT is also available to order. A square embedded gauge with a psi scale is fitted so you can read and set pressure directly, and a mounting bracket is included.
This is a genuine AirTAC part from the GR family, which spans the 200, 300, 400 and 600 sizes with port options from 1/8 to 1 inch, standard and low-pressure types, gauge scale choices and G, NPT or PT threads. GR units also panel-mount if you prefer a control-panel installation over bracket mounting. We do not quote a single rated flow figure because AirTAC publishes flow as curves; ask us and we will confirm the datasheet figures for your application.
| Model | GR30015LF2G AirTAC Low-Pressure Air Regulator G1/2 |
|---|---|
| Series | GR300 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.
| 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. |
| (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 | 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 |
Settling a steady, reduced supply pressure to spray guns and air-assisted applicators on a finishing line, where the low-pressure ceiling of the L-type regulator keeps atomising air within the gun maker's window.
Dropping a 1/2 inch branch line feeding clamp cylinders on a machining fixture down to a fixed low setting, so workholding force stays repeatable regardless of swings in the main header pressure.
Regulating supply to seal bars and small actuator cylinders on a cartoning or wrapping machine, with the psi-scale gauge letting operators verify and re-set the pressure after changeovers.
Start with the port and size step: the 300 size carries a 1/2 inch port, and moving up a size (400) or down (200) changes both the port and the flow capacity - match the step to the air your line actually consumes, and we will confirm the flow curve against your demand before you order. This unit is the low-pressure L type with a 0.4 MPa maximum setpoint; if your circuit needs the full 0.05-0.9 MPa range of a standard GR, pick the non-L code instead. The fitted square gauge reads in psi; MPa and bar scales and an external round gauge are alternatives in the family. Thread is G (BSPP) here, with PT as the standard and NPT orderable - choose to match your pipework. A bracket is included, and GR also panel-mounts. No filter or lubricator is included; add a GF or GL unit if your circuit needs them.
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 GR regulator flow as curves rather than a single rated number, so we do not quote a l/min, SCFM or Cv figure here. Send us your line pressure, set pressure and air demand and we will confirm the datasheet flow curve for this 300-size, 1/2 inch unit against your application before you order.
The L in the code marks the low-pressure type, whose adjustment range tops out at 0.4 MPa - intended for circuits that must run below full line pressure. If your application needs the standard GR range of 0.05-0.9 MPa, order the equivalent GR300-15 code without the L instead; the port, thread and gauge options carry across.
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.