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Type 3211 & Type 3221 Analog Weatherproof Regulator
Brand: Marsh Bellofram Group of CompaniesThe Type 3211 (single loop) and 3221 (double loop) analog weatherproof regulators deliver fast, stable pneumatic control with the durability you need in industrial applications.
Designed with non-bleeding solenoid valve technology and an integral flow booster, these regulators offer forward flows up to 15 SCFM and exhaust flows up to 7 SCFM—comparable to standard electronic regulators or I/P converters.
With a rugged weatherproof enclosure and flexible control options, the 3211/3221 ensures reliable operation even in challenging conditions.
Features
- Weatherproof Enclosure
- User Selectable Input Signal
- Analog Monitor Output
- Single Loop and Dual Loop Control
Specifications
Accuracy
- 0.5 % of Full Scale
Supply Voltage
- 15-24 Vdc (12 Vdc option)
Maximum Supply Pressure
- 200 psig (13.8 bar)
Flow Capacity
- Forward: 15 scfm (425 LPM)
- Exhaust: 7 scfm (198 LPM)
Operating Temperature
- 0° to 60° C (32° to 141° F)
Wetted Material
- Aluminum
- Copper Alloy
- Nickel
- Silicon
- 316 Stainless Steel
- Buna-N
Port Size
- 1/4" NPT
- 1/4" BSPT
- 1/4" BSPP
- Automotive Machinery
- Robotics
- Web Tension Control
- Molding & Forming
- Paint Spray Systems
