The 3540 Series regulator is an electrically heated dual-stage regulator used for non-corrosive liquefied gases with up to 3000 psi inlet pressure. It is specifically designed to prevent freeze-up problems associated with high flows of carbon dioxide. As CO2 passes through a regulator seat, dry ice can form if the flow is too high, causing the regulator to freeze up.

Applications

• Chemical storage blanketing
• Anaerobic chambers
• Inert gas purging
• Atomic absorption oxidizer gas
• Semiconductor reactor furnace
• Inductively coupled plasma systems
• Ph control

*Note: where CGA is replaced by the actual CGA number. Some CGA limitations may apply.

Design Features

• Stainless steel diaphragms
• First stage brass piston sensor
• One piece encapsulated seat design includes a sintered filter to protect the seat from particulate contamination.
• 2-1/2” Chrome plated dual scale gauges (psi/bar)
• Maximum inlet 3000 psig
• Flow Capacity 0.15
• 200 Watt electric heater
• 110 VAC
• Continuous flow up to 100 SCFH CO2

Materials of Construction

• Gauges: 2 1/2” diameter chrome plated brass
• Body: Chrome-plated brass barstock
• Bonnet: Chrome-plated brass barstock
• Second Stage Diaphragm: Stainless steel
• First Stage: Brass piston
• Nozzle: Brass
• Seats: PTFE
• Seals: Buna-N
• Filter: Nickel-plated sintered bronze
• Seat Return Spring: Stainless steel
• Adjusting Knob: ABS plastic

	Mounting Options
	53 Series Protocol Station This brass manifold is designed to provide a safe, reliable way of wall-mounting a cylinder regulator. Manifolds are provided a durable stainless steel bracket, stainless steel flex hose (3 ft std.), and a CGA connection with integral check valve.

Flow Curves

Flow Curves, 3540 Series

Instructions

Instructions, General Regulator