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Masterlock
11 products
Showing 1 - 11 of 11 products




Masterlock is a global leader in security and safety solutions, trusted by professionals for its reliable locking systems and innovative safety lockout devices. Whether securing worksites, equipment, or access points, Masterlock products offer unmatched protection, durability, and peace of mind. At Cleanflow, we carry a curated selection of Masterlock's top-performing products designed to support workplace safety and operational efficiency.
Brand History
Founded in 1921, Masterlock has been at the forefront of security innovation for over a century. From the invention of the first laminated padlock to today's advanced lockout/tagout systems, the brand has consistently pushed the boundaries of safety and reliability. Known for its rugged construction and quality commitment, Masterlock remains the go-to name in personal and industrial security.
Why Choose Masterlock?
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Proven Security: Masterlock products are engineered for high security, offering resistance to picking, cutting, and unauthorized access.
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Workplace Safety Compliance: Their lockout/tagout solutions help ensure OSHA compliance and protect workers during maintenance and repairs.
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Durable Construction: Made with materials like Zenex™ thermoplastic, stainless steel, and hardened steel, Masterlock devices are built to perform in harsh environments.
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Trusted Worldwide: With decades of use in industrial, commercial, and residential settings, Masterlock is synonymous with protection and reliability.
Best-Selling Masterlock Products
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Master Lock Model S3081 Adjustable Ball Valve Lockout
Master Lock Model S3081 Adjustable Ball Valve Lockout is designed to prevent accidental activation of closed ball valves, ensuring workplace safety. Made from durable Zenex™ Thermoplastic, it resists chemicals and extreme temperatures. This lockout fits valves from 1/2in (13mm) to 2in (51mm), works with the S806 cable lockout device, and features four locking holes for Master Lock and American Lock safety padlocks. A removable insert accommodates various handle designs, enhancing its versatility.
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Master Lock Compact Safety Lockout Pouch Kit with Zenex Thermoplastic Padlocks
Master Lock Compact Safety Lockout Pouch Kit provides a comprehensive set of tools for electrical lockout applications. It includes Zenex Thermoplastic Padlocks, circuit breaker lockout devices, steel hasps, a plug prong lockout, and lockout tags. The kit comes in a compact, zippered pouch with Velcro straps for easy belt attachment and transport. This kit ensures comprehensive electrical safety with unmatched convenience.
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Master Lock Heavy Duty Single Cylinder Deadbolt
Master Lock Heavy Duty Single Cylinder Deadbolt features a bump-resistant six-pin cylinder, a 2-3/4" fixed backset latch, and a 1" solid core throw bolt. This brushed chrome deadbolt meets ANSI Grade 2 performance standards, ensuring reliable security.
Common Uses for Master Lock Products
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Securing Lockers: Master Lock padlocks are widely used for school, gym, and workplace lockers, offering keyed and combination options.
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Protecting Gates and Sheds: Their durable padlocks are suitable for outdoor use, including gates, sheds, and storage units, providing weather-resistant security.
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Luggage and Travel: Smaller Master Lock padlocks are designed for luggage, toolboxes, and travel bags.
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Safes and Cabinets: Master Lock also manufactures safes with fire and water resistance for securing important documents and valuables.
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Multi-User and Institutional Settings: Special Master Lock models are designed for schools, health clubs, and businesses, featuring easy-to-use combination or key systems with administrative override options.
Masterlock FAQs
1. What is the purpose of the Masterlock adjustable ball valve lockout?
This device is designed to secure ball valves in the off position, preventing accidental startup of machinery or systems during maintenance. It supports OSHA lockout/tagout procedures and fits various valve sizes.
2. What’s included in the Compact Safety Lockout Pouch Kit?
The kit includes two Zenex™ thermoplastic padlocks, multiple tags, lockout hasps, and valve lockout devices—everything needed to perform safe and compliant lockout procedures in a portable pouch.
3. Is the heavy-duty deadbolt suitable for outdoor use?
Yes, the Masterlock heavy-duty single-cylinder deadbolt is built with durable, weather-resistant materials, making it suitable for indoor and outdoor use.
4. Are Zenex™ thermoplastic padlocks resistant to chemicals and heat?
Yes, Zenex™ padlocks are designed to withstand high temperatures, harsh chemicals, and UV exposure, making them ideal for industrial applications.
5. Can Masterlock products help with OSHA compliance?
Absolutely. Masterlock’s lockout/tagout devices, including valve lockouts and padlocks, are designed to meet OSHA safety requirements and enhance worker protection.
Explore the full range of Masterlock products at Cleanflow and secure your operations with industry-leading safety and reliability.