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3210B Series Single-Stage Corrosion Resistant Regulator - Monel

USD $2,201.24

3210B Series Single-Stage Corrosion Resistant Regulator - Monel

USD $2,201.24
Part Number:    3210B Series
   Availability:   Ships within 24 hours from Montgomeryville, PA

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Product Description

MATHESON made in the USA



Corrosive service regulators constructed of Monel and Elgiloy for superior corrosion resistance.


• Pressure regulation of acid forming halogen gases, such as hydrogen chloride, chlorine, hydrogen fluoride, hydrogen bromide, and silicon tetrafluoride
• Dispensing of corrosive calibration gases
• Research and development applications where a corrosion resistant regulator is required for either corrosive ambient conditions or corrosive gas service
• Applications requiring extended regulator lifespan in severe conditions.

MATHESON strongly recommends the use of a cross-purge with any regulator put into highly corrosive or toxic gas service. You can easily add a cross-purge to this model regulator by selecting "Yes" for the Cross Purge option above.

Design Features

• Monel and Elgiloy construction for excellent corrosion resistance
• PCTFE seat material for use with chlorinated compounds
• 2-1/2” Monel gauges
• Equipped with Monel needle valve on outlet
• 1/4” NPTM outlet connection


Materials of Construction 

• Gauges: Monel
• Body: Monel
• Bonnet: 303 Stainless Steel
• Diaphragm: Elgiloy
• Valve Stem: Monel
• Valve Spring: Elgiloy
• Seat: PCTFE
• Friction Sleeve: PTFE

Materials of Construction (Outlet Valve)

• Body: Monel
• Stem: 316 Stainless Steel
• Packing: PTFE


• Maximum Inlet Pressure: 3000 psig (20,700 kPa)
• Flow Capacity (Cv): 0.20
• Operating Temperature: -40°F to 140°F (-40°C to 60°C)
• Porting (Regulator Body): 1/4” NPT Female
• Porting Configuration: 2 High, 2 Low
• Outlet Valve: SEQ104B
• Valve Outlet: 1/4" MNPT

Cross Purge Option

• 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
• Monel and Aluminum-Silicon-Bronze construction


Model 4775 Monel Cross Purge Assembly



Typical assembly of regulator and cross purge assembly
(stainless steel models shown here for illustration purposes)

Flow Curves

Flow Curves, 3210B Series


Instructions, General Regulator

3D Model



Warranty Information