High-purity brass line regulator designed for analytical applications with non-corrosive gases.

Applications

• Point-of-use regulation of high-purity gases used in chromatography or other analytical applications (see table below for details)

Design Features

• High purity nickel plated brass barstock bodies
• High purity 316L stainless steel diaphragms
• Metal to metal seals minimize diffusion of contaminants
• 2-1/2” delivery pressure gauge
• Available with outlet diaphragm valve
• 1/4” or 1/8” compression tube inlet/outlet connection
• 10 micron metal filter protects seat from contamination
• Bonnet threaded for panel mounting
• Body screw thread tapped for back mounting, 10-32 UNF
• Bonnet vent hole size: 1/8” NPTF

Materials of Construction

• Gauge: Chrome plated brass
• Body: Nickel plated brass barstock
• Bonnet: Chrome plated brass barstock
• Diaphragm: 316L stainless steel
• Seat: Teflon
• Seals: Metal to metal 

Specifications

• Maximum Inlet Pressure: 3000 psi (2,760 kPa)
• Typical Max Flow Rate (100 psi del press): 8 SCFM-N2 (230 SLPM)
• Flow Capacity (Cv): 0.08
• Operating Temperature: -40°F to 140°F (-40°C to 60°C)
• Flow Direction: Right to Left
• Porting (Regulator Body): 1/4” NPT Female
• Porting Configuration: 2 High, 2 Low

	Mounting Options
	Mounting Bracket for Single Stage & Line Regulators Two 10-32 screws are needed to mount the back of the regulator to this bracket.
	Mounting Bracket for Regulators PMK-2N Mounting Nuts are also needed (see below). The regulator knob will have to be removed in order to mount on this bracket.
	PMK-2N Mounting Nuts These nuts can be used either with the above bracket or for mounting in a panel.

Flow Curves

Flow Curves, 3420A/3430A Series

Instructions

Instructions, General Regulator

Drawing

Drawing, 3420A

3D Model

3420A

3420A-NV