Product Description
The Siemens 331-431 an integral pivot and post, is a compact, metal-fabricated pneumatic damper actuator. It effectively controls HVAC dampers with a nominal spring range of three to seven psi. The actuator's air connection fits 1/8 inch NPT female with a dual barb fitting for 1/4 inch OD tubing, ensuring versatile and reliable functionality in commercial building settings.
- Designed for gradual or positive actuation
- Features ozone-resistant rolling diaphragm
- Extended shaft mounting for enhanced usability
Technical Specifications
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Manufactured by: Siemens
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Mode/Type: No. 3
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Spring Range: three to seven psi
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Connection Type: 1/8 inch NPT female
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Barb Fitting Size: For 1/4 inch OD tubing