Compact, high-purity regulators for use with small cylinders.

Applications

• Applications requiring high-purity gases and a compact regulator due to space limitations

Design Features

• High-purity nickel plated brass barstock body
• High-purity 316 stainless steel diaphragm
• 1-1/2” inlet and delivery pressure gauges
• 1/4” NPTF outlet connection
• Porous metal filter protects seat from contaminants
• Panel mountable
• 0-3000 psi cylinder pressure gauge

*Note: where CGA is replaced by the actual CGA number. Some CGA limitations may apply. (NI) for 1/4" FNPT inlet

Materials of Construction

• Gauges: Chrome plated brass
• Body: Nickel plated brass
• Diaphragm: 316 stainless steel
• Seat: Kel-F 81
• Seals: Teflon 

Specifications

• Maximum Inlet Pressure: 3000 psi (20,700 kPa)
• Maximum Flow Rate: 11 SCFH (5 SLPM)
• Flow Capacity (Cv): 0.06
• Operating Temperature: -40°F to 140°F (-40°C to 60°C)
• Porting (Regulator Body): 1/4” NPT Female
• Gauge Ports: 1/8” NPT Female
• Porting Configuration: 2 Low, 2 High

Flow Curves

Flow Curves, 3550/3570 Series

Instructions

Instructions, General Regulator

3D Model

3550