The AirTAC GR30015LC2GK 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 GR30015LC2GK is an AirTAC GR-series air pressure regulator: it does one job only, holding a stable downstream air pressure from your compressed-air supply. This unit is the 300 size with a G1/2 (BSPP) female port, built as the low-pressure type with a regulation range up to 0.4 MPa, so it suits circuits that must never see full-line pressure. It comes with an external round pressure gauge scaled in psi, and a reverse (check) valve is fitted so downstream pressure is held if the upstream supply drops. A mounting bracket is included, and the GR body is also panel-mountable.
This is a genuine AirTAC part. The GR family spans four sizes (200, 300, 400, 600) with ports from 1/8" to 1", a choice of PT (standard), G or NPT thread, standard or low-pressure regulation, gauge scale in MPa, psi or bar, and an optional reverse valve. 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. We do not quote a single rated flow figure because AirTAC publishes flow as curves; ask us and we will confirm the datasheet figures for your application.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 | GR30015LC2GK AirTAC Air Regulator G1/2 Low-Pressure |
|---|---|
| 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 — round, 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.
| 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). |
| C | Gauge shape: Round. 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 | 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 |
On a carton-sealing or wrapping line where actuators and clamps are rated well below full shop air pressure, this low-pressure regulator holds the circuit at a safe setpoint up to 0.4 MPa, with the check valve holding the setting if the main supply dips.
Spray heads, atomizers and air-knife purges need a steady, gentle air supply rather than full line pressure. This G1/2 regulator lets an operator set the process pressure in psi on the round gauge and keep it stable through the shift.
In a multi-zone air distribution panel feeding different machines, each zone can take its own GR300 regulator. Panel mounting and the included bracket let it sit alongside the zone valves, with the psi gauge giving a local pressure readout per zone.
Start with the port and size: the 300 size with a 1/2" port suits mid-range supply lines, and stepping up to 400 or 600 gives a larger port for higher air demand - match the size to the flow your circuit needs rather than to the pipe alone. This code is the low-pressure (L) type, so choose it only where the set pressure stays at or below 0.4 MPa; for higher setpoints order the standard type. The round gauge here reads in psi (scale 2); MPa and bar scales are also available. Thread is G (BSPP) on this unit, with PT as the catalogue standard and NPT orderable - pick the one that matches your fittings. A mounting bracket is included, and the fitted reverse valve keeps downstream pressure from bleeding back when supply is lost.
One honest note on sizing: AirTAC publishes regulator flow as curves, not a single rated number, so we cannot quote a rated flow here. Tell us your line pressure, set pressure and expected air demand, and we will confirm the right size from the datasheet 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 regulator flow as performance curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Send us your supply pressure, set pressure and expected air consumption, and we will confirm the flow data from the datasheet for your application before you order.
L is the low-pressure type: its regulation range tops out at 0.4 MPa, so it is for circuits that must never be set above that. The C2 in the code means an external round gauge is fitted with a psi scale; MPa and bar scales are also available if you prefer metric. The G at the end is the G (BSPP) thread, with PT as the catalogue standard and NPT orderable as 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.