The AirTAC GR30010LF2K AirTAC Low-Pressure Regulator PT3/8 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 PT3/8" 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 GR30010LF2K is an AirTAC GR300 series air pressure regulator, a genuine AirTAC part dedicated to one job: holding a stable downstream air pressure in a compressed-air line. This is the low-pressure type (code L), so its adjustment range tops out at 0.4 MPa, and it carries a 3/8 inch PT-threaded port. The embedded square gauge fitted here reads in psi, so operators can set and monitor the working pressure directly at the unit, and the built-in reverse (check) valve (code K) helps hold the downstream setting if upstream supply is interrupted. Maximum inlet pressure is 1.0 MPa (145 psi), and the unit operates in ambient temperatures from -20 to 70 C - a wider window than the rest of the G-series, which makes GR the family to reach for in colder shops.
GR300 regulators are one of four sizes in the family (200/300/400/600), each stepping up in port size and flow capacity; port and thread options (PT standard, G and NPT to order) let you match the machine's piping. GR units have no bowl and no drain - they regulate only - and mounting is flexible: a bracket is included with this configuration and the series is also panel-mountable. Because AirTAC publishes flow as curves rather than a single rated figure, we confirm the datasheet and flow figures for your application on request.
| Model | GR30010LF2K AirTAC Low-Pressure Regulator PT3/8 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT3/8" (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. |
|---|---|
| 10 | Port size PT3/8". 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 · PT3/8" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Set a gentle, steady downstream pressure on the atomizing-air feed to a spray booth gun circuit, where the coating process calls for a low setpoint that the low-pressure GR300 holds without overshoot.
Regulate the supply to clamp cylinders on a CNC fixture line, keeping the holding pressure consistent across shift so workpieces are gripped the same way on every cycle.
Feed the low-pressure air knives and blow-off jets on a packaging conveyor, where the check valve helps preserve the set pressure at the jets through upstream supply dips.
Pick the GR size by the port and flow step your line needs: 200 for 1/8-1/4 inch ports, 300 for 3/8-1/2 inch, and larger 400/600 bodies for 3/4-1 inch lines - always size up against the air demand of the circuit rather than the port alone. This code is the low-pressure type, so choose it only where the working setpoint stays at or below 0.4 MPa; for higher setpoints use a standard GR. Decide the gauge scale you want the crew to read (MPa, psi or bar) and whether the embedded square gauge or the optional external round gauge suits the panel. Thread is PT as standard, with G (BSPP) and NPT available as order options, and a reverse/check valve can be specified where downstream pressure must be held. AirTAC publishes flow 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.
AirTAC publishes GR-series flow as curves rather than a single rated figure, so there is no one number we can honestly quote. Tell us your upstream pressure, setpoint and the air demand of the circuit, and we will confirm the flow and datasheet figures for this exact model on request before you order.
The L marks the low-pressure type of the GR series: its adjustment range tops out at 0.4 MPa instead of the standard regulator's wider range. Choose it for circuits that run at low setpoints - such as spray, blow-off or delicate clamping applications - and use a standard GR300 code where you need to regulate above 0.4 MPa. This unit also carries a square gauge reading in psi and a reverse (check) valve, both set by the code.
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.