The AirTAC GR30008LF3T AirTAC Low-Pressure Air Regulator NPT1/4 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 GR30008LF3T is an AirTAC GR300 air pressure regulator built for regulation only: it sets and holds a stable downstream pressure and contains no filter, no bowl and no lubricator. This unit is the low-pressure (L) type, so its adjustment range tops out at 0.4 MPa - the right choice when the downstream circuit must never see standard-line pressure. It carries 1/4 in ports in NPT thread, an embedded square gauge reading in bar, and a mounting bracket is included; the GR300 can also be panel-mounted. 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.
This is a genuine AirTAC part. The GR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options include standard or low-pressure regulation, square or round gauges with MPa, psi or bar scales, a reverse/check valve, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GR30008LF3T AirTAC Low-Pressure Air Regulator NPT1/4 |
|---|---|
| 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, bar 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. |
| 3 | Gauge scale: bar. 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 |
Feeding air knives or nozzles that clear dust and film from cartons, where the jet pressure must be held low and steady so the product or label is not disturbed.
Supplying gentle, closely controlled purge air to protective housings around lab and process instruments, where the enclosure rating depends on pressure never creeping above a low setpoint.
Driving small pneumatic cylinders that position guide rails, stops and gates on bottling or conveyor lines, where low regulated pressure protects lightweight tooling and product.
Start with the port step: GR300 in 1/4 in sits in the middle of the GR range, and the correct size depends on the air demand of the circuit - we confirm sizing from the published flow curves before you order. Choose the low-pressure (L) type, as here, whenever the controlled pressure must stay at or below 0.4 MPa; for higher setpoints use the standard GR type with its 0.05-0.9 MPa range. The square gauge is embedded as standard and this unit reads in bar; round external gauges and MPa or psi scales are also available. Thread is NPT on this code, with PT as the standard and G as an order option. A mounting bracket is included, and the GR300 can additionally be panel-mounted. Because flow is published as curves rather than a single rating, ask us to confirm the datasheet figures against your application before ordering.
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 GR flow as curves rather than a single rated figure, so we do not quote a l/min, m3/h or SCFM number. Tell us your inlet pressure, setpoint and air demand and we will confirm the datasheet curve figures for this exact model on request before you order.
The L type in this code limits the adjustment range to a maximum of 0.4 MPa, which suits circuits that must never receive full line pressure. A standard GR300 regulates from 0.05 to 0.9 MPa. Both share the same 1.0 MPa (145 psi) maximum inlet and -20 to 70 C temperature range.
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.