Tech Master GPT400 Multi Stage 2 Gauge Cylinder Regulator (Oxygen/Inert) - 10 bar, Side Entry, Grade 4.5
- Two stage diaphragm cylinder regulator for Oxygen/Inert gas
- Brass barstock body with FKM seal, maximum inlet pressure 300 bar
- Delivers constant pressure as cylinder pressure decreases
- Suitable for technical gases up to 4.5 purity (99.995%)
- BS 341 No.3 inlet and 3/8 BSP male right hand outlet

4.5 Purity Two Stage Brass Barstock Diaphragm Cylinder Regulator
GPT401 Series | Two Stage Diaphragm Cylinder Regulator, FKM Seal
Comprising of: Cylinder Connection, Cylinder Contents Gauge, Outlet Pressure Gauge, Outlet Connection
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
The Tech Master GPT400 Series two stage diaphragm cylinder regulators are designed for primary pressure gas control of of non-corrosive or toxic, technical gases up to grade 4.5 purity (99.995%), on applications where constant delivery pressure is required as the cylinder pressure decreases.
Features
- Five port configuration
- Encapsulated seat design
- Low wetted surface area
- Base and side entry options
- BS 341 No.3 inlet
- 3/8 BSP male right hand outlet
- Full range of other inlet and outlet fittings available (see model selector chart below)
Gas Compatibility
This regulator is configured for Oxygen/Inert gas
It is also available for the following gas types:
| Body | Brass Barstock |
| Bonnet | High Strength Alloy |
| Diaphragm | Polychloroprene (Neoprene®) (CR) |
| Valve Seat | Polyamide (Nylon®) |
| Seal | FKM |
| Filter | 10 Micron 316L Stainless Steel |
| Maximum Inlet Pressure | 300 bar (4350 PSI)* |
| Delivery Pressure Range | 1.5 bar (22 PSI), 3.5 bar (50 PSI), 6 bar (90 PSI), 10 bar (150 PSI) |
| Gauges | 50mm (2″) Diameter |
| Ports | 1/4″ NPT Female |
| Temperature Range | -20° C to +60° C (-4° F to +140° F) |
| Weight | 1.8 kg (4 lbs) ** |
* Subject to cylinder connection – ** Cylinder connection not included
Flow Performance

Drawings

Model No. Selector Guide
For custom configuration please use the following table to create a model number and contact us for our best price (Example Model Number: GPT401-02-02-00-00-000-00-A)
| Product Type | Inlet Pressure Bar [PSI] | Outlet Pressure Bar [PSI] | Inlet Pressure Gauge | Outlet Pressure Gauge | Inlet Connection | Outlet Connection | Options |
| GPT401 | 02 – 60 bar [870] | 02 – 0 to 1.5 [22] | 00 – No Gauge Fitted | 00 – No Gauge Fitted | 000 – No Outlet Fitted (1/4 NPT F) | 00 – No Outlet Fitted (1/4 NPT F) | A – No Options Selected |
| GPT402 | 04 – 300 bar [4350] | 03 – 0 to 3.5 [50] | 01 – bar/PSI | 01 – bar/PSI | 001 – 1/8 Stainless Steel Compression | 01 – 1/8 Stainless Steel Compression | K – Certificate of Conformity (CoC) |
| 04 – 0 to 6 [90] | 10 – Plugged Port | 10 – Plugged Port | 002 – 1/4 Stainless Steel Compression | 02 – 1/4 Stainless Steel Compression | P – Calibration / Pressure Test Certificate | ||
| 05 – 0 to 10 [150] | 003 – 6mm Stainless Steel Compression | 03 – 6mm Stainless Steel Compression | X – Special Instruction | ||||
| 004 – 1/4 NPT Male | 04 – 1/4 NPT Male | ||||||
| 007 – G3/8 BSP R/H Brass Male | 05 – 1/4 SAE Flare Brass Male | ||||||
| 008 – G3/8 BSP L/H Brass Male | 06 – G1/2 BSP R/H Brass Male | ||||||
| 009 – BS341 No.3 (Base Entry) | 07 – G3/8 BSP R/H Brass Male | ||||||
| 010 – BS341 No.3 | 08 – G3/8 BSP L/H Brass Male | ||||||
| 011 – BS341 No.4 (Base Entry) | 09 – Isolation Valve, 1/4 NPT Female, FKM Seal | ||||||
| 012 – BS341 No.4 | 10 – Isolation Valve, 1/4 NPT Female, EPDM Seal | ||||||
| 015 – BS341 No.8 | 11 – Isolation Valve, 1/8 Stainless Steel Compression, FKM Seal | ||||||
| 030 – DIN477 No.6 | 12 – Isolation Valve, 1/8 Stainless Steel Compression, EPDM Seal | ||||||
| 033 – DIN477 No.9 | 13 – Isolation Valve, 1/4 Stainless Steel Compression, FKM Seal | ||||||
| 034 – DIN477 No.10 | 14 – Isolation Valve, 1/4 Stainless Steel Compression, EPDM Seal | ||||||
| 045 – CGA320 | 15 – Isolation Valve, 6mm Stainless Steel Compression, FKM Seal | ||||||
| 052 – CGA540 | 16 – Isolation Valve, 6mm Stainless Steel Compression, EPDM Seal | ||||||
| 053 – CGA580 | 17 – Isolation Valve, 1/4 NPT Male, FKM Seal | ||||||
| 18 – Isolation Valve, 1/4 NPT Male, EPDM Seal | |||||||
| 19 – Isolation Valve, G3/8 BSP R/H Brass Male, FKM Seal | |||||||
| 20 – Isolation Valve, G3/8 BSP R/H Brass Male, EPDM Seal | |||||||
| 21 – Isolation Valve, G3/8 BSP L/H Brass Male, FKM Seal | |||||||
| 22 – Isolation Valve, G3/8 BSP L/H Brass Male, EPDM Seal |
| Brand | Gas Arc |
| Inlet Connection | BS341 No.3 |
| Inlet Pressure | 300 bar |
| Gas Type | Oxygen/Inert |
| Outlet Connection | 3/8 BSP Male Right Hand Outlet |
| Outlet Pressure | 10 bar · |
| Entry Point | Side Entry · |
| Stages | Multi Stage |
| shopping_price_ranges | 200 - 500 |
| Purity Grade | Grade 4.5 |
| SKU | Outlet Pressure | Entry Point | Purity Grade | Stock Status | |
|---|---|---|---|---|---|
| GPT401-04-05-01-01-010-07-A/3960001049 | 10 bar | side entry | grade 4 5 | In Stock | £215.74 ex VAT £258.89 inc VAT |
| GPT401-04-04-01-01-010-07-A/3960006112 | 6 bar | side entry | grade 4 5 | In Stock | £215.74 ex VAT £258.89 inc VAT |
| GPT401-04-03-01-01-010-07-A/3960001087 | 3 5 bar | side entry | grade 4 5 | In Stock | £215.74 ex VAT £258.89 inc VAT |
| GPT401-04-02-01-01-010-07-A/3960002626 | 1 5 bar | side entry | grade 4 5 | In Stock | £215.74 ex VAT £258.89 inc VAT |
| GPT401-04-05-01-01-009-07-A/3960000042 | 10 bar | base entry | grade 4 5 | In Stock | £215.74 ex VAT £258.89 inc VAT |
| GPT401-04-04-01-01-009-07-A/3960004408 | 6 bar | base entry | grade 4 5 | In Stock | £215.74 ex VAT £258.89 inc VAT |
| GPT401-04-03-01-01-009-07-A/3960000998 | 3 5 bar | base entry | grade 4 5 | In Stock | £215.74 ex VAT £258.89 inc VAT |
| GPT401-04-02-01-01-009-07-A/3960001933 | 1 5 bar | base entry | grade 4 5 | In Stock | £215.74 ex VAT £258.89 inc VAT |
Tech-Master-Regulators_GPT40GEN-A-REV-1.pdf
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