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3870-S Modified Dual-Stage High-Purity Miniature Regulator - SS

USD $1,522.11

3870-S Modified Dual-Stage High-Purity Miniature Regulator - SS

USD $1,522.11
Part Number:    SEQ387xCGA-S
   Availability:   Ships within 24 hours from Montgomeryville, PA

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Product Description

MATHESON made in the USA



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


• 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
• 1/4” NPTF 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 


• 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


The standard 3570 Series does not come with an outlet valve.  The diaphragm valve is the 4370 Series and the needle valve is the 1003B.

No Lube
A small amount of polychlorotrifluoroethylene is added to the threads to facilitate assembly. For ECD, MS or AED applications where method detection limits are sub-ppm, it is recommended to use a No Lube (-NL) model.

Cross Purge
• Eliminates the escape of hazardous gases when changing cylinders
• Reduces danger of contamination from atmospheric moisture and oxygen
• Minimizes the amount of gas lost during cylinder changes
• All stainless steel construction
• 4360 Series Quarter-Turn Diaphragm Valves used throughout



Instructions, General Regulator

Warranty Information