The AirTAC GR30010LC2GK AirTAC Air Regulator G3/8 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 PT3/8" 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 GR30010LC2GK is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from a compressed-air supply, and it carries no filter element, no bowl and no lubricator. This 300-size unit is decoded with a G3/8 (BSPP) port, the low-pressure type (L) whose adjustment range tops out at 0.4 MPa, a round external pressure gauge scaled in psi (C2), a built-in reverse/check valve (K) that holds downstream pressure when the upstream supply is lost, and the mounting bracket included as standard. 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 200, 300, 400 and 600 sizes with port sizes from 1/8 to 1 inch, in standard and low-pressure types, with or without gauge, and with PT, G or NPT threads to order. Rated flow for regulators is published as curves rather than a single figure, so ask us and we will confirm the datasheet numbers for your application on request.
| Model | GR30010LC2GK AirTAC Air Regulator G3/8 Low-Pressure |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT3/8" (G (BSPP) 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| G | G (BSPP) 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 · PT3/8" · 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, repeatable downstream pressure for clamping fixtures that must not see full line pressure. The low-pressure type caps adjustment at 0.4 MPa, and the check valve holds the clamp if the upstream supply drops.
Feed a machine's directional-valve manifold at a steady, dedicated pressure independent of the shop-air header. The 3/8-inch G-thread port drops straight into the machine's BSPP plumbing, and the psi gauge gives operators a familiar readout.
Supply delicate low-pressure devices - air bearings, air chucks, low-pressure actuators - from a standard shop-air main. The wide -20 to 70 C temperature range and included bracket make it straightforward to mount at the point of use.
Start with the port step: 200, 300, 400 and 600 sizes step up in port and flow capacity, so match the size to your line's pipe and air demand - here the 300 size gives a 3/8-inch G-thread connection. Choose the regulator type next: this L-coded low-pressure version adjusts up to 0.4 MPa, which suits circuits that must never see full line pressure; the standard type covers the wider range. Then pick your gauge (embedded square or external round, scaled in MPa, psi or bar - this unit ships with a round psi gauge), decide whether a reverse/check valve (K) is wanted to hold downstream pressure, and select PT, G or NPT thread when ordering. A bracket is included, and GR is also panel-mountable.
One honest note on sizing: AirTAC publishes regulator flow as curves, not a single rated number, so we do not quote a flow figure here. Send us your application details and we will confirm the datasheet curve and sizing against your required flow before you order.
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 regulator flow as curves rather than a single rated figure, so we do not quote one number here. Tell us your application and required flow, and we will confirm the datasheet curve and check the sizing for you on request.
L is the low-pressure type: its adjustment range tops out at 0.4 MPa instead of the standard range, ideal where the circuit must never exceed that setting. K means a reverse/check valve is fitted, which holds downstream pressure if the upstream supply is interrupted. This unit also carries a round external gauge scaled in psi (C2) and includes the mounting bracket.
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.