The AirTAC GR30008LF2T AirTAC Air Pressure 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 GR30008LF2T is an AirTAC GR-series air pressure regulator: it does one job, holding downstream pressure steady, and it carries no filter, no bowl and no lubricator. This 300-size unit is specified with a 1/4 in NPT port, the low-pressure type L adjustment covering up to 0.4 MPa, and an embedded square gauge scaled in psi (an external round gauge is optional). The trailing T sets the thread to NPT, while PT is the catalogue standard and G (BSPP) is also orderable. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -20 to 70 C, and the unit is supplied with a mounting bracket; GR regulators are also panel-mountable.
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, plus options for gauge scale (MPa, psi or bar), a reverse/check valve, and thread variants. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GR30008LF2T AirTAC Air Pressure 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, psi 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. |
| 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. |
| (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 |
Set a reduced, stable supply pressure to clamping or holding cylinders on a press line where the tooling calls for working pressures at the lower end of the range rather than full line pressure.
Regulate the air feeding bench-top test rigs, gauges and small pneumatic fixtures, where operators dial in a repeatable downstream pressure and read it directly off the psi-scaled gauge.
Feed sealing bars, diverters and small actuators on a packaging line from a regulated drop, keeping downstream pressure steady as upstream compressor pressure swings through the shift.
Start with the port step: the 300 size carries a 1/4 in port, and moving up to 400 or 600 buys a larger port and more flow capacity. Because flow for GR regulators is published as curves, not a single rating, send us your air demand and let us confirm the size against the datasheet before you order. This unit is the low-pressure type L, adjustable up to 0.4 MPa - choose standard GR if you need the wider 0.05-0.9 MPa range. The fitted square gauge is scaled in psi; MPa and bar scales are available instead. Thread: PT is the catalogue standard, with G (BSPP) and NPT as orderable options - the T here selects NPT. A bracket is included, and GR also mounts in a panel. A reverse/check valve can be ordered if backflow protection is needed.
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 regulator flow as curves, not as a single rated figure, so we do not quote a flow number, Cv or SCFM here. Tell us your application and air demand and we will confirm the sizing against the datasheet on request before you order.
L marks the low-pressure type: its adjustment range tops out at 0.4 MPa, versus the wider 0.05-0.9 MPa range of the standard GR regulator. Choose L when your process runs at reduced pressure; choose the standard type for full-range adjustment. Everything else on this unit - 1/4 in NPT port, square psi gauge, included bracket - decodes as shown.
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.