Spec Master HPT621 6 Port Two Stage Inert Gas Regulator (3960006105)
- Two-stage inert gas regulator with six-port configuration for high-purity gases up to 6.0 grade (99.9999%)
- Maximum inlet pressure 300 bar, delivery pressure range 0-50 bar with 1/4″ NPT Female outlets
- Nickel plated brass body with encapsulated seat design and 10 micron 316L stainless steel filter
- Base and side entry points; operates -20°C to +60°C; weighs 2.0 kg
- Helium leak integrity 1 x 10-9 mbar l/s for high-purity gas handling

HTP621-04-10-01-01-010-00-A
The Spec Master HPT621 6 Port Two Stage Inert Gas Regulator, part of the HPT620 Series is expertly designed for precise control of non-corrosive or toxic, high purity gases up to grade 6.0 purity (99.9999%).
It is tailored for applications requiring constant delivery pressure even as cylinder pressure decreases, making it an ideal choice for various critical applications where the highest levels of gas purity and stability are essential.
Key Features
- Six-Port Configuration: Offers extensive connection flexibility for various system needs.
- Front Panel Mounting Capabilities: Enables easy integration into a range of setups, enhancing versatility.
- Encapsulated Seat Design & Low Wetted Surface Area: Reduces contamination risks, crucial for handling high-purity gases.
- Full Range of Inlet and Outlet Fittings: Accommodates diverse gas types and connections.
- Base and Side Entry Points: Provides flexibility in installation and connection configurations.
Typical Applications
- Laboratories and Research: Ideal for settings requiring precise control of high-purity gases.
- Industrial Processes: Suitable for manufacturing and processing industries dealing with high purity gases.
- Specialized Gas Handling: Perfect for managing high-purity, non-corrosive, or non-toxic gases.
| Inlet Connection | <=300 bar BS341 No.3 |
| Maximum Inlet Pressure | 300 bar (4350 PSI) |
| Delivery Pressure Range | 50 bar (725 PSI) |
| Flow Coefficient (Cv) | 0.079 |
| Outlet | 0-50 bar 1/4 NPT Female |
| Ports | 1/4″ NPT Female |
| Gauges | 50mm (2″) Diameter |
| Weight | 2.0 kg (4.4 lb) ** |
| Temperature Range | -20° C to +60° C (-4° F to +140° F) |
| Helium Leak Integrity | 1 x 10-9 mbar l/s |
| Body | Nickel Plated Brass Barstock |
| Bonnet | Nickel Plated Brass Barstock |
| Piston | Brass |
| Seal | FKM / EPDM |
| Valve Seat | PCTFE |
| Filter | 10 Micron 316L Stainless Steel |
| Options | A (Gas Arc Brand) |
* Subject to cylinder connection – ** Cylinder connection not included
Please note: If you require a test certificate with your regulator, it must be ordered at the same time. Our certification product can be found here: Gas Arc Regulator Test Certificate
Data Sheet can be found in Documents Section
| Brand | Gas Arc |
| Entry Point | Base Entry, Side Entry |
| Inlet Connection | BS341 No.3 |
| Outlet Connection | 1/4" NPT |
| Inlet Pressure | 300 bar |
| Outlet Pressure | 50 bar |
| Purity Grade | Grade 6.0 |
| Stages | Multi Stage |
| Gas Type | Inert |
Download 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.
Spec Master HPT621 6 Port Two Stage Inert Gas Regulator (3960006105) 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














Reviews
There are no reviews yet