The Maxon Honeywell Natural Gas Shutoff Valve 075SMA11-AA11-BB21A0 is a high-performance, electromechanical safety shut-off valve designed for natural gas applications. This normally closed valve ensures rapid and reliable cessation of gas flow, enhancing safety in industrial combustion systems.
Key Features
- Valve Size and Connection: 3/4-inch (DN20) with NPT threaded connections, facilitating straightforward integration into existing pipelines.
- Flow Capacity: Offers a Cv of 19, ensuring efficient gas flow management.
- Pressure Rating: Capable of handling a maximum operating pressure differential of 125 PSIG, suitable for high-pressure systems.
- Construction Materials: Features a durable cast iron body, a 400 series stainless steel seat, and a hardened ductile iron disc, providing longevity and resistance to wear.
- Sealing Components: Equipped with PEEK follower rings and Buna-N O-rings and bumpers, ensuring tight sealing and leak prevention.
- Actuation and Timing: Operates with a 115 VAC/60 Hz actuator motor, achieving full closure in approximately 6 seconds.
- Enclosure Rating: Comes with a NEMA 4 general-purpose enclosure, offering protection against environmental factors.
- Switches: Includes one proof-of-open switch and one proof-of-closure switch, providing verification of valve position for enhanced safety monitoring.
- Assembly Position: Configured with a right top assembly position, with field-rotatable top assemblies in 90° increments to fit specific application requirements.
Applications
This valve is ideal for use in industrial and commercial settings where precise control and safety of natural gas flow are paramount. Typical applications include:
- Gas supply control for burners, boilers, and furnaces.
- Safety shut-off in fuel gas and oil lines.
- Process heating and combustion systems.
- OEM applications requiring dependable gas shutoff mechanisms.
Certifications and Compliance
The 075SMA11-AA11-BB21A0 valve meets stringent industry standards, including:
- Factory Mutual (FM) approval.
- Canadian Standards Association (CSA) certification.
- Underwriters Laboratories (UL) listing.
- Conformité Européenne (CE) marking.
- Full assessment to IEC 61508 as SIL 3 capable.
These certifications affirm the valve’s reliability and safety for use in various industrial environments.
Maintenance and Installation
Designed for ease of maintenance, the valve’s unique bonnet design eliminates the need for packing adjustments, reducing upkeep requirements. The field-rotatable top assembly allows for flexible installation to accommodate specific application needs.
In summary, the Maxon Honeywell Natural Gas Shutoff Valve 075SMA11-AA11-BB21A0 combines robust construction, rapid operation, and comprehensive safety features, making it a dependable choice for controlling natural gas flow in demanding industrial applications.
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