The AirTAC GR30015LF2K AirTAC Air Pressure Regulator PT1/2 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 GR30015LF2K is an AirTAC GR300 air pressure regulator in the low-pressure type, sized for 1/2 in PT ports. It does one job only: holding a stable downstream pressure, in this case adjustable up to 0.4 MPa, with a maximum inlet pressure of 1.0 MPa (145 psi). This configuration carries an embedded square gauge scaled in psi as standard (an external round gauge is optional), a built-in reverse/check valve (code K), and the mounting bracket is included - the GR body is also panel-mountable. Operating temperature is -20 to 70 C, wider than the rest of the G-series, and the medium is compressed air.
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 a choice of gauge scale (MPa, psi or bar), G or NPT thread options, and bracket or no-bracket variants. Flow is published by AirTAC as curves rather than a single rated figure, so ask us to confirm the datasheet and flow figures for your application on request.
| Model | GR30015LF2K AirTAC Air Pressure Regulator PT1/2 Low-Pressure |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/2" (PT 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.
| 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. |
| (blank) | PT 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 |
Packaging machines often use pneumatic clamps and hold-downs that need a gentle, stable setpoint rather than full line pressure. This regulator lets the operator dial in a low setting up to 0.4 MPa and hold it steady, with the psi gauge giving a direct local readout at the machine.
Spray and coating installations frequently run atomising or air-assist circuits at reduced pressure. Fitted downstream of the main supply, this 1/2 in regulator holds the reduced setpoint, while the built-in check valve stops backflow through the branch when the booth is shut down.
Process plants often feed valve positioners and pilot actuators from a dedicated low-pressure branch. This GR300 regulator takes the plant supply at up to 1.0 MPa and delivers a controlled low-pressure pilot supply, with panel mounting and the included bracket suiting cabinet or frame installation.
Start with the port step: GR300 covers 3/8 to 1/2 in ports, and the right size depends on the air demand of the circuit - flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering. Because this is the L (low-pressure) type, its regulation range tops out at 0.4 MPa; if your setpoint is higher, the standard GR type adjusts up to 0.9 MPa. The F2 suffix here means the embedded square gauge is scaled in psi; MPa and bar scales are available as alternatives. The trailing K confirms a reverse/check valve is fitted - omit it if backflow is not a concern. Thread is PT as standard; G (BSPP) and NPT are catalogue options you can order. Brackets are included as standard, with a no-bracket (J) variant available.
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 curves rather than a single rated number, so we do not quote a rated flow, Cv or SCFM figure. Tell us your inlet pressure, setpoint and air demand and we will confirm the flow figures from the datasheet for this exact model on request.
L is the low-pressure regulator type, which adjusts up to 0.4 MPa instead of the standard type's 0.9 MPa range - choose it when your setpoint is genuinely low. F2 means the embedded square gauge is scaled in psi; MPa and bar scales are also available. The K suffix confirms a reverse/check valve is fitted, and the bracket is included as standard.
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.