The AirTAC GR30015LJC2G AirTAC Air Pressure Regulator G1/2 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 PT1/2" 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 GR30015LJC2G is an AirTAC GR-series air pressure regulator: it does one job, holding downstream compressed-air pressure steady at the setting you choose. This unit is the low-pressure type, so it regulates up to 0.4 MPa, and it is built in the 300 size with a G1/2 (BSPP) port. It comes fitted with an external round gauge reading in psi, and because it is a regulator only, it contains no filter element and no bowl - pair it with a GF filter if the air also needs cleaning.
This is a genuine AirTAC part from the GR line, which spans the 200, 300, 400 and 600 sizes with port options from 1/8 in to 1 in, standard or low-pressure regulation, gauge and scale choices, and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -20 to 70 C. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GR30015LJC2G AirTAC Air Pressure Regulator G1/2 Low-Pressure |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/2" (G (BSPP) thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure type |
| Bracket | Supplied without bracket |
| 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 | 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. |
|---|---|
| 15 | Port size PT1/2". 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. |
| J | Supplied without bracket. |
| (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. |
| (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 · PT1/2" · 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 wrapping line, delicate pneumatic actuators and sealing cylinders often need a gentler, tightly held supply than the main header delivers. This low-pressure regulator lets the machine builder branch off the shop air and set a stable reduced pressure for those circuits.
Bench-mounted test rigs and lab apparatus that run on compressed air need a repeatable, low working pressure that stays put between runs. A GR300 with a psi-scale gauge at the bench inlet gives the operator a visible, adjustable set point without disturbing the building's main regulator.
Spinning, weaving and web-converting machines use low-pressure air jets for thread guidance, cleaning and web separation. Feeding those jets through this regulator isolates them from header pressure swings, keeping the jet behaviour consistent across the shift.
Start with the port step: the 300 size takes a 1/2 in port, and larger sizes carry more flow - match the size to your line's air demand rather than the pipe alone. This code is the L low-pressure type, correct where the working setting stays at or below 0.4 MPa; if you need settings up to 0.9 MPa, choose the standard GR type instead. The C2 suffix gives you an external round gauge with a psi scale (MPa and bar scales are also available), and the trailing G specifies G (BSPP) thread where PT is the standard and NPT is an order option. The J code means no mounting bracket is fitted, though the GR is also panel-mountable. Flow is published as curves, not a single rating, so ask us to confirm sizing 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 regulator flow as curves rather than a single rated figure, so there is no one rated-flow number we can honestly quote. Tell us your application and expected air demand and we will confirm the relevant datasheet flow figures for the GR300 size on request before you order.
The L in the code marks the low-pressure type of the GR series, which regulates up to 0.4 MPa - ideal for circuits that run gently and safely below the main header pressure. If your setting needs to reach up to 0.9 MPa, choose the standard GR type instead; the rest of the decode (size, port, gauge, thread) 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.