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3430A Series High-Purity Line Regulator - SS

USD $1,083.73

3430A Series High-Purity Line Regulator - SS

USD $1,083.73
Part Number:    3430A Series
   Availability:   Ships within 24 hours from Montgomeryville, PA

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Product Description

MATHESON made in the USA



High-purity stainless steel line regulators designed for analytical applications with non-corrosive or semi-corrosive gases.


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


Design Features

• High-purity 316L stainless steel barstock body construction
• High-purity 316L stainless steel diaphragms
• Metal to metal seals minimize diffusion of contaminants
• 2” delivery pressure gauge
• Bonnet ported and threaded to pipe gases away from work area
• Bonnet threaded for panel mounting
• Body screw thread tapped for back mounting
• Available with outlet diaphragm valve
• 10 micron metal filter protects seat from contamination
• 1/4” or 1/8” compression tube inlet/outlet connection (1/4” FPT optional)
• Bonnet vent hole size: 1/8” NPTF

Ordering Information  
Part Number Max
Delivery Pressure
Delivery Pressure


SEQ3430A 15 psi -30"-0-30 psi X 1/4" Compression
SEQ3430ANV 15 psi -30"-0-30 psi   1/4" Compression
SEQ3430A2 15 psi -30"-0-30 psi X 1/8" Compression
SEQ3430ANV2 15 psi -30"-0-30 psi   1/8" Compression
SEQ3431A 50 psi -30"-0-100 psi X 1/4" Compression
SEQ3431ANV 50 psi -30"-0-100 psi   1/4" Compression
SEQ3431A2 50 psi -30"-0-100 psi X 1/8" Compression
SEQ3431ANV2 50 psi -30"-0-100 psi   1/8" Compression
SEQ3432A 125 psi -30"-0-200 psi X 1/4" Compression
SEQ3432ANV 125 psi -30"-0-200 psi   1/4" Compression
SEQ3432A2 125 psi -30"-0-200 psi X 1/8" Compression
SEQ3432ANV2 125 psi -30"-0-200 psi   1/8" Compression
SEQ3433A 250 psi 400 psi X 1/4" Compression
SEQ3433ANV 250 psi 400 psi   1/4" Compression
SEQ3433A2 250 psi 400 psi X 1/8" Compression
SEQ3433ANV2 250 psi 400 psi   1/8" Compression

Materials of Construction

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


• 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, General Regulator


Drawing, 3430A

3D Model



Warranty Information

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