Gas Regulators
Products
Cylinders Pressure Control
Regulators designed for stable, accurate pressure delivery in gas cylinders.
Gas Pressure Control Panels
Continuous and safe gas supply
Tapping Points
Point of use gas regulators
Explore our range of high purity gas regulators tailored for demanding applications.
Definitions and Basic Concepts
A High Purity Gas Pressure Regulator is a precision component designed to reduce and control gas pressure from a high-pressure source (like a cylinder or bulk system) to a stable, lower pressure suitable for sensitive applications — without contaminating or reacting with the gas.
These regulators are crucial for ensuring purity, safety, and consistency in processes involving ultra-high purity (UHP) gases.
⚙️1. Purpose and Function
A high purity regulator:
Reduces gas pressure in one or two stages.
Maintains a constant outlet pressure despite cylinder pressure changes.
Prevents back diffusion or contamination from ambient air or other gases.
Ensures leak-tightness and corrosion resistance.
🧩 2. Main Components
Component Description Body Typically 316L stainless steel, electropolished to Ra < 0.25 µm for cleanliness. Diaphragm Metal diaphragm (stainless steel, Hastelloy) ensures zero permeation and ultra-clean operation. Valve Seat PCTFE, PTFE, or metal-to-metal seat for high chemical compatibility. Adjusting Knob / Spring Controls outlet pressure. Inlet and Outlet Ports Usually 1/4” or 1/8” compression fittings or VCR connections. Pressure Gauges Show inlet (cylinder) and outlet pressures. Filter (Optional) Captures particulates before entering the process line.
🔧 3. Regulator Types
Type Description Typical Use Single-Stage Regulator Reduces pressure in one step; outlet pressure may drift as cylinder depletes. Point-of-use or where small pressure variation is acceptable. Dual-Stage Regulator Two regulators in series; maintains nearly constant outlet pressure as inlet pressure drops. Analytical instruments, mass spectrometers, and high-precision labs. Line Regulator Installed downstream to stabilize pressure from a distribution line. Local control at workbench or instrument. Miniature Regulator Compact size for portable or small systems. Gas chromatographs, small analyzers. Automatic Changeover Regulator Assembly Integrated with valves to switch between cylinders automatically. Continuous gas supply systems.
🧪 4. Material and Cleanliness
Body: 316L stainless steel (electropolished)
Internal seals: PTFE, PCTFE, or metal
Connections: Orbital welded or face-seal (VCR)
Cleanroom-assembled and helium leak tested (<1×10⁻⁹ mbar·L/s)
Cleaning standard: ASTM G93 / SEMI F20
📊 5. Performance Specifications
Parameter Typical Range Inlet Pressure Up to 300 bar (4350 psi) Outlet Pressure 0–10 bar (or as required) Flow Coefficient (Cv) 0.05–0.5 (depending on size) Temperature Range -40°C to +60°C Leak Rate < 1×10⁻⁹ mbar·L/s Purity Level 99.999% (5N) to 99.9999% (6N)
🧠 7. Applications
Analytical instruments (GC, LC-MS, ICP-MS)
Semiconductor gas distribution
Research labs and cleanrooms
Pharmaceutical and biotech production
Calibration gas systems
Specialty chemical synthesis
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