High-pressure regulator 1/4", 3,153 l/min, 1-150 bar
Code: 120.422
Product detailed description
The EWO 120.422 high-pressure regulator reduces the pressure of compressed air, nitrogen or another neutral gas from the network – up to 200 bar – to an adjustable 1 to 150 bar. You can see the inlet and outlet pressure on the two pressure gauges, which are included.
Flow rate 3,153 l/min, G 1/4" connection with female thread, T-handle adjustment. It belongs to the series of high-pressure regulators 120 with inlet up to 200 bar.
Specifications
| Parameter | Value |
|---|---|
| Code | 120.422 |
| Inlet pressure | max. 200 bar (PN 200) |
| Outlet pressure (control range) | 1–150 bar |
| Flow rate | 3,153 l/min |
| Connection | G 1/4" female thread, inlet and outlet |
| Nominal size | DN 3 |
| Inlet pressure gauge | ⌀ 63 mm, 0–315 bar, red mark at 200 bar |
| Outlet pressure gauge | ⌀ 63 mm, 0–200 bar |
| Adjustment | T-handle |
| Secondary venting | no (the outlet pressure drops as gas is consumed) |
| Overpressure protection | relief valve |
| Mounting position | any, flow from left to right |
| Operating temperature | −10 to +90 °C |
| Medium | compressed air, nitrogen, neutral compressed gases |
| Material | brass body and spring housing, NBR seals |
| Dimensions (width × height) | 150 × 215 mm |
| Weight | 2.72 kg |
Dimensions and connection
Gas flows from left to right. The left pressure gauge (p1) shows the inlet pressure, the right one (p2) the set outlet pressure.
Installation and adjustment
- install the regulator so that the gas flows from left to right when looking at the pressure gauges; any mounting position is possible
- the inlet and outlet have a G 1/4" female thread – use fittings and seals designed for pressures up to 200 bar
- set the pressure from below: loosen the handle, slowly open the supply and tighten the handle until the outlet pressure gauge shows the required pressure
- when you want to reduce the pressure, loosen the handle and vent the outlet by consuming gas – the regulator does not release gas from the outlet by itself
Spare parts
Do you need to replace a pressure gauge or another part? Send us the code of your regulator and we will check the correct part with the manufacturer.
For an inlet up to 60 bar and a higher flow rate, there are regulators 302 with secondary venting.
Additional parameters
| Category: | Air pressure regulators – precision, high-pressure, remote-controlled |
|---|---|
| EAN: | 4030875105889 |
| Pressure: | 200 bar |
| Dimensions: | 150 × 215 mm |
| Weight: | 2,72 kg |
| Flow: | 3,153 l/min |
| Regulatory range: | 1.0 to 150 bar |
| Thread: | G 1/4" |
| In stock: | External warehouse |
Product rating
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EWO is a Stuttgart brand of compressed air fittings and oxy-fuel equipment. The company was founded by Emil Wolf in 1914, has been run by the Holzapfel family since 1938 and has carried the name ewo since 1939. It develops and manufactures in four areas: air preparation, compressed air accessories, air service equipment for workshops and filling stations, and oxy-fuel and propane welding equipment. Our range includes blow guns and nozzles, pressure regulators, air treatment units, tyre inflators and spray guns.
You will find EWO products in industry, car workshops and at filling stations. The BG269 and BG470 blow guns share the same M12 × 1.25 nozzle thread, so you can change the nozzle to suit the job. The pressure regulators cover ordinary air lines as well as high-pressure applications with inlets up to 200 bar.
A brand since 1914EWO ranges in our shop
BG269A forged blow guns
An all-metal gun for the shop floor. The forged aluminium body resists impact and mechanical damage.
- M12 × 1.25 nozzle thread
- eye for hanging on a balancer
- DN 7.2 plug, hose tail or 1/4″ thread
BG470 lightweight blow guns
For guns you hold all shift long. The hardened polyamide body is light and the trigger meters the flow.
- smooth control from zero to full
- M12 × 1.25 nozzle thread
- working temperature −10 to +50 °C
M12 × 1.25 nozzles
One gun, many jobs. Interchangeable nozzles screw onto both BG269 and BG470 guns.
- low-noise and safety nozzles
- straight and bent long nozzles up to 800 mm
- flat nozzles with 6 and 16 channels
Pressure regulators
Steady pressure for machines and tools. They reduce line pressure to the set value and come with a 63 mm gauge.
- G 1/8″ to 2″ threads
- flow up to 25,000 l/min
- inlet pressure up to 200 bar
STANDARD units
Air treatment for high flow rates. Filter regulator and lubricator for branch lines and high-consumption machines.
- G 3/4″ to 2″ threads
- flow up to 12,678 l/min
- inlet up to 25 bar with metal bowls
COMBIBLOC units
Three devices in one body. Filter, regulator and lubricator take up far less space than three separate devices in a row.
- G 1/4″ to 1″ threads
- setting range 0.5–6, 10 or 16 bar
- 40 µm filter element
Euroair tyre inflators
For tyre shops and filling stations. Aluminium body and 80 mm gauge in a protective cover.
- ranges 0–4, 0–10 and 0–25 bar
- scale in 0.1 bar steps
- inflate and deflate with one lever
Paint spray guns
HVLP for painting and decorative work. Profipaint, Smartpaint and Minipaint spray at low pressure up to 2.5 bar with less overspray.
- stainless nozzle for water-based paints
- adjustable spray pattern and paint feed
- nozzles from 0.7 to 2.2 mm
Looking for a different blow gun, a pneumatic tool or a balancer to hang your gun on? You will find it all in the Tools and spray guns category.
Tools and spray gunsEWO ranges side by side
| Range, use, design, connection and key figure | ||||
|---|---|---|---|---|
| Range | Use | Design | Connection | Key figure |
| BG269A | blowing in demanding work | forged aluminium, balancer eye | DN 7.2 plug, 6–13 mm hose tail, 1/4″ thread | M12 × 1.25 nozzles |
| BG269E | cooling and blowing out moulds | forged aluminium, max. flow setting | DN 7.2 plug, 6–13 mm hose tail, 1/4″ thread | M12 × 1.25 nozzles |
| BG470 | light blowing with metered flow | hardened polyamide, balancer eye | DN 7.2 plug, 6–13 mm hose tail, 1/4″ thread | M12 × 1.25 nozzles |
| Regulators 280, 286, 274, 406 | ordinary air lines and machines | zinc alloy body | G 1/8″ to 1 1/2″ | inlet 25 or 40 bar, outlet 0.5–25 bar |
| Regulators 417 | high flow rates | aluminium body | G 1 1/2″ and 2″ | 25,000 l/min, inlet up to 40 bar |
| Regulators 302 and 120 | high pressures | brass body | G 1/4″ to 1″ | inlet 60 or 200 bar, outlet up to 150 bar |
| STANDARD | branch lines with high consumption | filter regulator and lubricator | G 3/4″ to 2″ | 6,524 to 12,678 l/min |
| COMBIBLOC | air treatment in a small space | filter, regulator and lubricator in one body | G 1/4″ to 1″ | 1,400 or 3,400 l/min |
| Euroair TGE | tyre inflation | aluminium body, 80 mm gauge | DN 7.2 plug | range 0–4, 0–10 or 0–25 bar |
Choose a regulator or air treatment unit by the flow your equipment needs and the outlet pressure you have to set.
How to choose and connect a blow gun
1. Choose the connection
Pick the gun with the connection that matches your hose: a DN 7.2 plug for a quick coupling, a 6, 9 or 13 mm hose tail, or a 1/4″ female thread.
2. Choose the nozzle
The basic nozzle gives a concentrated jet. Where noise is a problem or dirt may fly back, use a low-noise or safety nozzle, and a long nozzle to reach deep into a machine.
3. Set the pressure
The guns work at 2 to 6 bar and withstand a maximum of 10 bar. Reduce higher line pressure with a regulator upstream of the gun.
4. Hang it up and look after it
Both BG269 and BG470 guns have an eye for hanging on a balancer. Only change the nozzle with the gun disconnected from the air supply, and keep the thread clean.
Frequently asked questions
- Which nozzles fit EWO blow guns?
- The BG269 and BG470 guns have an M12 × 1.25 nozzle thread. They take the nozzles from our M12 × 1.25 nozzle category: basic, low-noise, safety, injector, long and flat.
- What is the difference between BG269A, BG269L and BG269E?
- All three are all-metal guns with a lever trigger and the same nozzles. BG269A has a forged aluminium body, BG269L a cast aluminium body, and BG269E is a forged gun with an adjustable maximum flow, for example for cooling and blowing out moulds.
- What does secondary venting on a regulator mean?
- When you lower the outlet pressure, the regulator vents the surplus air downstream by itself, so the pressure drops straight away. All EWO regulators of the 274, 280, 286, 302, 406, 417 and 120 series have it.
- When should I choose COMBIBLOC and when STANDARD?
- COMBIBLOC combines filter, regulator and lubricator in one body and takes up little space, with flow up to 3,400 l/min. STANDARD is for branch lines and high-consumption machines, with G 3/4″ to 2″ threads and flow up to 12,678 l/min.
- Is the Euroair inflator suitable for a tyre shop?
- Yes, the Euroair TGE range is designed mainly for filling stations and trade workshops. It has an 80 mm gauge in a protective cover and is also available with a calibrated gauge. The 0–25 bar range is for aircraft and special tyres.
- Where are EWO products made?
- The brand is owned by Hermann Holzapfel GmbH & Co KG, which develops and manufactures in Stuttgart, in the Stuttgart-Vaihingen industrial area since 1955. Every part goes through several inspections during production. The company has a quality management system certified to ISO 9001 and, for pressure measuring instruments, a certified production quality system (Module D) under the German Measures and Verification Ordinance.
EWO is a brand of Hermann Holzapfel GmbH & Co KG, Stuttgart; the manufacturer itself writes it in lower case as “ewo”. Technical data can be found on each product page.