The AirTAC GR30008LC2TK 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 GR30008LC2TK is an AirTAC GR300 series air pressure regulator in the low-pressure type, built purely for regulation: it reduces and holds downstream air pressure with no filtration and no lubrication. This configuration carries 1/4 in NPT ports, an external round pressure gauge scaled in psi, and a built-in reverse (check) valve that keeps downstream pressure from bleeding back through the unit. Because it is the L (low-pressure) type, its adjustment range tops out at 0.4 MPa, making it the right pick for circuits that must never see full line pressure. A mounting bracket is included, and the GR300 can also be panel-mounted.
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, in PT (standard), G (BSPP) or NPT thread, with standard or low-pressure regulation, gauge scale and check-valve options. 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 | GR30008LC2TK 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, 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. |
|---|---|
| 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. |
| 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 · 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 |
On a carton-sealing or case-packing machine, pneumatic clamps and pushers often need a gentle, stable pressure well below the main line supply. This low-pressure GR300 regulator, with its psi gauge and check valve, lets a technician dial in and hold the safe setting at each 1/4-in drop.
Spray nozzles, atomizers and coating heads in a paint or test booth depend on steady, moderate air pressure for consistent droplet size. The low-pressure adjustment range of this NPT1/4 regulator keeps the atomizing header where the process was set, and the check valve stops backfeed when supply is shut off.
Diverters, gates and hold-down rollers on a conveyor line can mark or jam product if fed at full header pressure. Feeding them through this low-pressure GR300 regulator at a 1/4-in tap lets the line set a soft, repeatable actuation pressure, read directly on the psi gauge.
Start with the port step: this unit is size 300 with 1/4 in NPT ports; larger sizes (400, 600) carry bigger ports and suit higher air demand, so match the size to the flow your circuit needs. Next, choose the regulator type: this is the low-pressure (L) type, adjustable up to 0.4 MPa - if your line needs the full standard range up to 0.9 MPa, pick a GR without the L code. The round gauge here reads in psi; MPa and bar scales are also available. Thread is NPT on this model, with PT (the standard) and G (BSPP) as order options. A bracket is included, and the GR300 is also panel-mountable. One honest note on sizing: flow is published as curves, not a single rating, so ask us to confirm the datasheet figures against your application before ordering.
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 GR300 flow as curves, not as a single rated number, so we do not quote a flow figure here. Tell us your application - supply pressure, downstream demand and allowable pressure drop - and we will confirm the datasheet flow figures for this exact model on request.
The L in the code marks the low-pressure regulator type: its adjustment range tops out at 0.4 MPa instead of the standard GR range up to 0.9 MPa. It is the right choice where the downstream circuit must never be set above 0.4 MPa. Max inlet pressure is still 1.0 MPa (145 psi), and this unit also carries a built-in check valve and a round psi 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.