The AirTAC GR30008LF1T AirTAC Regulator NPT1/4 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 PT1/4" 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 GR30008LF1T is an AirTAC GR-series air pressure regulator: it does one job, keeping downstream pressure steady at the value you set. This unit is the 300 size with a 1/4 in NPT port, and it is the low-pressure type, so its adjustment range tops out at 0.4 MPa - the right choice when your actuator, tool or circuit needs a gentle, stable supply rather than full line pressure. An embedded square gauge with MPa scale is fitted so the setpoint is readable at a glance, and a mounting bracket is included for secure panel or frame fixing.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, PT as the standard thread and G or NPT as order options, plus gauge scale choices and a reverse/check-valve variant. Max 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. Rated flow is published as curves rather than a single figure, so ask us to confirm sizing against your application before ordering.
| Model | GR30008LF1T AirTAC Regulator NPT1/4 Low-Pressure |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/4" (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, MPa 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. |
|---|---|
| 08 | Port size PT1/4". 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. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| T | NPT 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 · PT1/4" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
A compact 1/4 in NPT regulator holding a low, steady supply pressure for small gripper cylinders and vacuum ejectors on an assembly bench, with the MPa gauge letting the setter dial in and verify the setpoint.
Feeding a carton-sealing or labelling head that calls for a gentle regulated supply below 0.4 MPa, where the low-pressure L type matches the machine's pressure window and the bracket anchors the unit to the frame.
A bench-mounted drop from a lab compressed-air line, where the regulator gives a stable, adjustable low pressure to pneumatic test fixtures and the wide -20 to 70 C range suits an unheated workspace.
Start with the port step: this unit is 300 size with a 1/4 in NPT port - step up to 400/600 or down to 200 if your line runs larger or smaller ports, since bigger sizes carry more flow. Because this is the L (low-pressure) type, confirm your setpoint sits within its up-to-0.4 MPa range; the standard GR covers 0.05-0.9 MPa. Choose the gauge scale you want (this one is MPa; psi and bar scales are available) and decide between the embedded square gauge and the optional external round gauge. Thread is NPT here; PT is the standard and G is also orderable. A bracket is included, and GR is also panel-mountable.
Flow for the GR300 is published as curves, not a single rated number, so send us your application details and we will confirm the sizing from the datasheet before you order.
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 GR300 flow as curves rather than a single rated figure, so there is no one l/min or SCFM number we can honestly quote. Tell us your inlet pressure, setpoint and expected consumption and we will confirm the sizing from the datasheet before you order.
The L type is built for setpoints up to 0.4 MPa, whereas the standard GR300 adjusts up to 0.9 MPa. If your machine, tool or circuit is specified to run gently below 0.4 MPa, this version matches that window; max inlet pressure is still 1.0 MPa (145 psi) and the unit carries a fitted square MPa gauge.
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.