
Tech Master GPT400 Multi Stage 2 Gauge Cylinder Regulator (Oxygen NEVOC) - 10 bar, Grade 4.5
- Two stage diaphragm cylinder regulator for Oxygen NEVOC
- Brass barstock body with FKM seal and 10 micron 316L stainless steel filter
- Maximum inlet pressure 300 bar, delivery pressure range 1.5–10 bar
- Operating temperature range −20°C to +60°C
- Weight 1.8 kg (cylinder connection not included)

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 & Benefits
- Five port configuration
- Encapsulated seat design
- Low wetted surface area
- Side entry
- BS 341 No.32 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 NEVOC
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) |
| Temperature Range | -20° C to +60° C (-4° F to +140° F) |
| Gauges | 50mm (2″) Diameter |
| Ports | 1/4″ NPT Female |
| 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 |
| shopping_price_ranges | 200 - 500 |
| Gas Type | Oxygen |
| Inlet Connection | BS341 No.32 |
| Inlet Pressure | 300 bar |
| Outlet Connection | 3/8 BSP Male Right Hand Outlet |
| Outlet Pressure | 1.5 bar, 3.5 bar, 6 bar, 10 bar |
| Entry Point | Side Entry |
| Stages | Multi Stage |
| Purity Grade | Grade 4.5 |
| SKU | Outlet Pressure | Purity Grade | Stock Status | |
|---|---|---|---|---|
| GPT401-04-05-01-01-023-07-A/3960001919 | 10 bar | grade 4 5 | In Stock | £224.35 ex VAT £269.22 inc VAT |
| GPT401-04-04-01-01-023-07-A/3960018610 | 6 bar | grade 4 5 | In Stock | £224.35 ex VAT £269.22 inc VAT |
| GPT401-04-03-01-01-023-07-A/3960018603 | 3 5 bar | grade 4 5 | In Stock | £224.35 ex VAT £269.22 inc VAT |
| GPT401-04-02-01-01-023-07-A/3960018597 | 1 5 bar | grade 4 5 | In Stock | £224.35 ex VAT £269.22 inc VAT |
Tech-Master-Regulators_GPT40GEN-A-REV-1.pdf
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.
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