
Tech Master Gas Arc High Pressure Regulator - D1G Series - High Flow
- High-pressure regulator combining dome loaded and pilot regulator functions
- Flow rates up to 500m³/hr at 125bar inlet pressure
- 3/4″ NPT Female inlet and outlet connections
- Delivery range 0–38 bar; maximum inlet pressure 300 bar
- Compatible with inert, fuel gas, and oxygen up to 230–300 bar

The Tech Master Gas Arc High Pressure Regulator – D1G Series – High Flow is a sophisticated unit, integrating both a dome loaded and pilot regulator into a single compact design.
This regulator is specifically engineered to provide consistent flow rates, making it ideal for high flow applications like laser cutting, fire suppression, and gas purging.
With its ability to support flow rates up to 500m³/hr at 125bar inlet pressure, the D1G is a versatile tool for various industrial applications.
Key Features
- Combination Design: Incorporates both dome loaded and pilot regulator functionalities.
- High Flow Capacity: Supports flow rates up to 500m³/hr at 125bar inlet pressure.
- Compact Unit: Optimizes space and efficiency with its integrated design.
- 3/4″ NPT Female Inlet and Outlet: Provides robust and secure connections.
Typical Applications
- Laser Cutting: Ideal for high-flow rate requirements in laser cutting applications.
- Fire Suppression: Suitable for fire suppression systems needing consistent pressure delivery.
- Gas Purging: Effective in gas purging operations in industrial settings.
| Delivery Range | 0 – 38 bar (550 PSI) |
| Max. Inlet Pressure | 300 bar (4350 PSI) |
| Flow Coefficient (Cv) | 1.02 |
| Gas Compatibility | 300bar Inert, 300bar Fuel, 230bar Oxygen |
| Regulator Ports | 3/4″ NPT [F] Inlet & 3/4″ NPT [F] Outlet |
| Control Panel Ports | 1/4″ NPT [F] Inlet & 1/2″ BSP [F] Outlet |
| H.P. Gauge | 50mm (2″) Diameter |
| L.P. Gauge | 50mm (2″) Diameter |
| Regulator Weight | 2.05 kg |
| Control Panel Weight | 3.51 kg |
| Operating Temp. Range | -20°C to +60°C (-4°F to +140°F) |
| Standards Compliance | CGA E-4 |
| Body | Brass Barstock |
| Bonnet | Die Casting Alloy No. 5 |
| Pilot Diaphragm | Neoprene |
| Dome Piston (1) | Brass CDA 360 |
| Dome Piston (2) | Brass CDA 360 |
| Seat Stems (Pilot & Dome) | Stainless Steel Type 303 |
| Seats | Dome Seat Viton®, Pilot Seat Urethane |
| Seals/Piston O-Ring | Viton® |
| Dome Seat Backup Ring | Teflon® |
| Inlet Filter | 50 Micron Sintered Bronze, Electroless Nickel Plated |
| Mounting Bracket | Stainless Steel Type 304 |
Available Formats
The Tech Master Gas Arc High Pressure Regulator – D1G Series – High Flow is available in two formats:
- Regulator (Part Number: 3960067670)
- Control panel (Part Number: 3960067867)
The control panel version is equipped with a high flow valve and a ball valve, providing additional functionality.
Full specification can be found in “Documents” section
| Inlet Connection | 3/4” NPT |
| Outlet Connection | 3/4" NPT |
| Inlet Pressure | 300 bar |
| Outlet Pressure | 38 bar |
| Gas Type | Fuel, Inert |
| Brand | Gas Arc |
| Purity Grade | Grade 4.5 |
Tech Master D1G High Flow Regulator and Control Panel - Datasheet
Download PDFA carriage charge is applied to orders, for standard 1-2 day shipments to mainland destinations within the United Kingdom. Other destinations and premium services are available but subject to additional freight charges.
Get in touch
Have a question about this product? Our team of welding experts are here to help.
Visit Us
12 Mary Seacole Road
The Millfields
Plymouth, Devon
PL1 3JY













