Gas Arc Tech Master GA3500 Single Stage Inert Gas Regulator 300 Bar BS341 No.30 Inlet 1/4" NPT Outlet (GPS421-04-13-01-01-021-04-A)

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  • GA3500 inert gas regulator for non-corrosive or toxic technical grade gases
  • Single-stage piston design, 300 bar inlet pressure, 0-250 bar outlet pressure
  • Maximum flow 230 m³/hr at 15°C, grade 4.5 purity (99.995%)
  • Brass body with FKM seal, weighs 1.8 kg, operates -20°C to +60°C
  • BS341 No. 30 inlet connection, 1/4″ NPT male outlet port
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The GA3500 Inert Gas Regulator is a robust, high-pressure regulator designed for controlling non-corrosive or toxic, technical grade gases up to grade 4.5 purity (99.995%), featuring a single-stage piston cylinder with an FKM seal.

This regulator is ideal for applications such as high-pressure vessel testing and purging, and is used extensively in industrial, laboratory, and research settings. Its brass construction ensures it can withstand daily use in both cylinder and manifold mounting setups.

Key Features

  • 300 Bar Service: Suitable for high-pressure applications.
  • Single-Stage Type: Provides stable pressure regulation suitable for technical grade gases.
  • Piston Design: Facilitates ease of pressure adjustment.
  • Five-Port Configuration: Offers connection flexibility.
  • Encapsulated Valve Design: Ensures gas purity by minimizing contamination risks.
  • Front & Rear Panel Mounting: Allows versatile installation options.

Typical Applications

  • Industrial Processes: Ideal for high-pressure vessel testing and purging.
  • Laboratories and Research: Suitable for precise regulation of inert gases in research environments.
  • Process Control Applications: Effective for reliable gas control in industrial settings.
Type Single-stage
Inlet Pressure (max) 300 bar
Outlet Pressure 0-250 bar
Maximum Flow 230 m³/hr @ 15°C in Air at 300 bar inlet
Inlet Connection BS341 No. 30 – ISO 5145 No. 30
Outlet Port 1/4″ NPT Male
Pressure Adjusting Knob White
Temperature Range -20°C to +60°C
Weight 1.8 kg (4.0 lb)
Designed and Manufactured in Norfolk, UK.
Body Brass
Valve Seat Nylon
Piston Brass
Filter 316L Stainless Steel

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
Inlet Connection BS341 No.30
Outlet Connection 1/4" NPT
Inlet Pressure 300 bar
Outlet Pressure 250 bar
Purity Grade Grade 4.5
Stages Single Stage
Gas Type Inert

Download Datasheet

Download PDF

A 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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Gas Arc Tech Master GA3500 Single Stage Inert Gas Regulator 300 Bar BS341 No.30 Inlet 1/4" NPT Outlet (GPS421-04-13-01-01-021-04-A) Gas Arc Tech Master GA3500 Single Stage Inert Gas Regulator 300 Bar BS341 No.30 Inlet 1/4" NPT Outlet (GPS421-04-13-01-01-021-04-A)
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