The AirTAC GR30010LF2TK AirTAC Low-Pressure Regulator 3/8 NPT 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 GR30010LF2TK is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from a compressed-air supply, and nothing else - no filter, no bowl, no lubrication. This 300-size unit is configured for 3/8 in NPT ports with the low-pressure (L) type, so the setpoint can be adjusted up to 0.4 MPa, which suits circuits that must run well below full line pressure. Maximum inlet pressure is 1.0 MPa (145 psi), the operating temperature range is -20 to 70 C, and the embedded square gauge is fitted with a psi scale. A reverse/check valve (K) is fitted to hold the downstream setting if upstream supply is interrupted, and the mounting bracket is included; the GR body is also panel-mountable.
This is a genuine AirTAC part. The GR family spans 200, 300, 400 and 600 sizes with ports from 1/8 in to 1 in, standard or low-pressure regulation, gauge scale choices, an optional reverse/check valve, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GR30010LF2TK AirTAC Low-Pressure Regulator 3/8 NPT |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT3/8" (NPT 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. |
| 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 · 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 |
On a carton-sealing or case-packing machine, hold the pneumatic clamp cylinders at a gentle, repeatable setpoint below 0.4 MPa so delicate cartons are gripped without crushing, with the check valve holding the setting if supply dips.
On a laboratory or QC test bench, feed instruments and low-pressure pneumatic fixtures from a shop-air header, trimming the setpoint down to the 0.05-0.4 MPa region the bench needs while the psi gauge gives a direct readout.
On a bottle or can filling line, regulate the low-pressure air feed to air knives and blow-off nozzles that clear droplets before labelling, keeping the blowing pressure steady and independent of swings in the main header.
Start with the port step: 300 size carries 3/8 in ports, one step up from 1/4 in and one below 1/2 in - match it to your piping and the flow your line needs, then let us confirm the flow curve against the application before you order. Decide between the standard type and this low-pressure (L) type: the L type adjusts up to 0.4 MPa, which is the right choice when the process must never see full line pressure. Choose the gauge scale you want (MPa, psi or bar) - this unit carries the embedded square gauge with a psi scale. Thread is a real choice: PT is the catalogue standard, while G (BSPP) and NPT (this unit, code T) are order options. Add the K option if you want the reverse/check valve, and the bracket is included as standard on GR.
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 flow as curves rather than a single rated figure, so we do not quote one number here. Tell us your inlet pressure, setpoint and the flow your circuit needs, and we will confirm the correct size from the datasheet on request.
The L in the code marks the low-pressure type: its adjustment range tops out at 0.4 MPa instead of the standard GR range. It is the right pick when the downstream circuit must run well below full line pressure. If you need regulation up to 0.9 MPa, choose the standard GR300 version instead.
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.