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3217B-N/I Series Single-Stage Corrosion Resistant Regulator - Monel

USD $2,693.08

3217B-N/I Series Single-Stage Corrosion Resistant Regulator - Monel

USD $2,693.08
Part Number:    SEQ3217BNI.
   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
• Inlet connection: 1/4" female NPT port
• Delivery pressure range: 1-50 psi
• Delivery pressure gauge: 0-100 psi
• Cylinder pressure gauge: 0-1000 psi
• 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: 1000 psi
• 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

Flow Curves

Flow Curves, 3210B Series


Instructions, General Regulator

3D Model



Warranty Information

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