Tech Master GPS420 Inert Gas Regulator 250 Bar 1/4″ NPT Female Outlet (3960023669)


£443.95 ex VAT £532.74 inc VAT

Brand: Gas Arc
Product Model:
In Stock

  • Entry Point: Base and side entry
  • Inlet Connection:  BS 341 No.3 (Base Entry)
  • Outlet Connection: 1/4″ NPT Female
  • Inlet Max Pressure: 300 bar (4350 PSI)
  • Outlet Max Pressure: 250 bar (3630 PSI)
  • Purity Grade: Suitable for non-corrosive or toxic, technical grade gases up to 4.5 purity (99.995%)
  • Stages: Single-stage piston cylinder
  • Gas Type: Designed for inert gases
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Tech Master Inert Gas Regulator 250 Bar 1/4″ NPT Female Outlet (3960023669)

The Tech Master Inert Gas Regulator is a high-quality single-stage piston cylinder regulator designed for controlling non-corrosive or toxic, technical grade inert gases up to 4.5 purity (99.995%).

This regulator is ideal for applications where slight pressure variation from decreasing cylinder pressure is acceptable. It is specifically constructed for primary pressure gas control and is a product of the Gas Arc brand.

Key Features:

  • Five-Port Configuration: Offers extensive connection flexibility for various system needs.
  • Front and Rear Panel Mounting Capabilities: Enables flexible and secure installation in different environments.
  • Encapsulated Seat Design & Low Wetted Surface Area: Minimizes the risk of gas contamination, essential for maintaining gas purity.
  • Full Range of Inlet and Outlet Fittings: Ensures compatibility with diverse gas types and connections.
  • Base and Side Entry Points: Provides versatility in installation and connection configurations.

Common Applications:

  • Industrial Processes: Suitable for applications requiring precise control of inert gases.
  • Laboratories: Ideal for research settings where accurate gas flow control is necessary.
  • Technical Gas Handling: Appropriate for technical grade inert gases.

Basic Data

  • FKM Seal
  • Inlet <=300 Bar BS 341 No.3 (Base Entry)
  • Outlet 0-250 Bar 1/4 NPT Female
  • Options A
  • Gas Arc Brand

Model Number: GPS421-04-13-01-01-009-00-A


  • Five port configuration
  • Front & rear panel mounting capabilities
  • Encapsulated seat design
  • Low wetted surface area
  • Full range of inlet and outlet fittings
  • Base and side entry


Body Brass Barstock
Bonnet Brass Barstock
Piston Brass
Valve Seat Polyamide (Nylon®)
Filter 10 Micron 316L Stainless Steel


Maximum Inlet Pressure 300 bar (4350 PSI)*
Delivery Pressure Range 250 bar (3630 PSI)
Gauges Diameter 50mm (2 inches)
Ports 1/4 inch NPT Female
Temperature Range -20°C to +60°C (-4°F to +140°F)
Flow Coefficient (Cv) 0.1
Weight 1.5 kg (3.3 lbs)**

* 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




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