This is is a 3573-180 pressure regulator with a 103B outlet valve  Please note that the photo does not show the 103B outlet valve.

Applications

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

Design Features

• High-purity 316L stainless steel barstock body
• High-purity 316 stainless steel diaphragm
• 1-1/2” inlet and delivery pressure gauges
• CGA 180 inlet fitting
• 103B Stainless Steel outlet valve with 1/4” NPTM outlet connection
• Porous metal filter protects seat from contaminants
• Panel mountable
• 0-3000 psig cylinder pressure gauge

Materials of Construction

• Gauges: 316 stainless steel
• Body: 316L stainless steel
• Diaphragm: 316 stainless steel
• Seat: Kel-F 81
• Seals: Teflon 

Specifications

• Maximum Inlet Pressure: 3000 psig (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<
• CGA 180 inlet fitting
• 103B outlet valve with 1/4” NPTM outlet connection
• Delivery pressure range: 0-100 psig