The AirTAC GR30008LC3T AirTAC Low-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 GR30008LC3T is an AirTAC GR-series air pressure regulator: it does one job only, holding a stable downstream pressure from your compressed-air supply. This unit is the low-pressure (L) type, so its set range tops out at 0.4 MPa - the right choice for actuators, tools and processes that must never see full line pressure. It is a 300-size body with a 1/4 in NPT port, and the C3 code means an external round gauge is fitted reading in bar, so operators can see and set the downstream pressure at a glance. A mounting bracket is included, and the GR body is also panel-mountable, so it can sit on a machine frame or inside a control cabinet.
This is a genuine AirTAC part. The GR family spans four sizes (200, 300, 400, 600) with ports from 1/8 in to 1 in, standard or low-pressure regulation, gauge and thread options, and an optional reverse/check valve. Flow figures for the GR300 are published as curves rather than a single rating; ask us and we will confirm the datasheet figures against your application before you order.
| Model | GR30008LC3T AirTAC Low-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 — round, 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). |
| C | Gauge shape: Round. 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 |
Heat-seal and crimp jaws on a bagging or blister line need a gentle, repeatable clamping pressure well below main line pressure. This low-pressure regulator holds the jaw cylinder supply at a fixed setting so seals stay consistent without crushing the product.
Bench-top test rigs, sample purging and analytical instrument air often require a low, stable pressure from a shop-air drop. The 1/4 in NPT port and bar-reading gauge let a technician set and verify the exact supply pressure for the process.
Hold-down rollers, gate diverters and pusher cylinders on packaging conveyors work best at reduced pressure to avoid damaging product. This regulator lets the line set one safe pressure for all such stations off the main 1/4 in drop.
Start with the port step: this 300-size unit carries a 1/4 in port, and the GR family steps up through 400 and 600 sizes with 3/8 in to 1 in ports as your air demand grows. Because this is the L (low-pressure) type, choose it when the working pressure must stay at or below 0.4 MPa; for general service up to 0.9 MPa, the standard GR type is the correct pick instead. The fitted round gauge reads in bar - psi and MPa scales are also available if your team prefers them. Thread options are PT (standard), G (BSPP) and NPT (this unit); pick the one that matches your pipework. A bracket is included and the body can also be panel-mounted. Note that flow is published as curves, not a single rated figure, so send us your application details and we will confirm 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 GR-series flow as curves rather than a single rated figure, so we do not quote one number. Tell us your application and we will confirm the datasheet flow figures for the GR300 size against your requirement before you order.
The L in the code means the regulator is set up for low-pressure service, with a set range topping out at 0.4 MPa. A standard GR regulates up to 0.9 MPa. Choose this unit when the downstream equipment must never be exposed to full line pressure; everything else about the 300-size body, 1/4 in port and gauge stays the same.
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.