Space-saving NRS Gate Valve for Safe Water Supply, Fire Protection, and Underground Waterworks

NRS Gate Valve(Hants Model HGN) is designed with a non-rising stem structure for space-saving installation in underground waterworks, utility vaults, and limited-clearance piping systems. During operation, the valve stem remains in place instead of moving upward like an OS&Y gate valve. Operated by a handwheel, this valve provides dependable shut-off control for fire protection, water supply, and municipal waterworks applications.

This model series is available in multiple certified options for different applications: a UL listed model for fire protection systems, an NSF-certified model for drinking water applications under NSF/ANSI/CAN 61 and NSF/ANSI 372, and a dual UL + NSF certified and AWWA-compliant model for multi-purpose municipal and commercial piping systems.

Application of NRS Gate Valve

• Certified to meet strict health standards for municipal and commercial drinking water networks, ensuring lead-free and contaminant-free water delivery under AWWA specifications.
• Fully listed and tested to handle high-pressure fire sprinkler networks, ensuring immediate readiness and structural integrity during emergency fire suppression.
• The ultimate all-in-one solution for modern facilities utilizing shared piping networks for both domestic drinking water (NSF safe) and automatic fire protection systems (UL reliable).
• Perfect for isolation plumbing and fluid control within water purification, desalination, reverse osmosis, and municipal waterworks facilities.
• Designed to AWWA structural standards with a space-saving Non-Rising Stem, making it ideal for buried water mains, shallow trenches, and limited-clearance pits.

Key Features and Benefits of NRS Gate Valve

• Fully listed for high-pressure fire protection systems (UL) and certified lead-free for safe potable drinking water networks (NSF), offering an all-in-one valve solution that reduces crossover pipeline risks.
• The valve stem rotates internally rather than moving vertically during operation, making it the perfect choice for shallow trenches, buried water mains, or utility vaults with limited vertical clearance.
• Engineered and tested to conform strictly with AWWA C515 structural standards, ensuring robust durability, heavy-duty performance, and a long service life in demanding municipal waterworks.
• Coated internally and externally with high-grade, non-toxic powder coating. This protective layer prevents rust, eliminates chemical leaching, and guarantees clean water delivery while extending valve longevity.
• Equipped with a resilient wedge fully encapsulated in premium rubber, ensuring zero-leakage isolation and smooth operation even under high-pressure fire suppression and water supply conditions.

Frequently Asked Questions(FAQ) about NRS Gate Valve

Q1: Can this UL Listed & NSF Certified NRS Gate Valve be used for both commercial fire protection and domestic drinking water lines?

Yes, absolutely. This UL Listed & NSF Certified NRS Gate Valve is specifically engineered and dual-certified for integrated infrastructures. It meets the rigorous safety standards of UL for fire sprinkler networks while simultaneously holding NSF approval for public health and drinking water safety. This makes it the ideal, space-saving choice for dual-purpose water mains, high-rise buildings, and commercial complexes that combine their fire suppression and domestic water supply lines.

Q2: What are the main advantages of specifying this NSF Approved NRS Gate Valve for modern water systems?

This NSF Approved NRS Gate Valve offers ultimate versatility by combining three major industrial standards. Its UL listing ensures premium reliability and high-pressure performance for fire protection systems; its NSF certification guarantees all internal materials are lead-free and certified safe for potable drinking water; and its AWWA compliance ensures structural durability for municipal waterworks. This allows engineers to use one premium gate valve across multiple demanding applications, significantly simplifying system design and inventory.

NSF Certified for Drinking Water System Components: Lead Content (NSF/ANSI 372) , Health Effects (NSF/ANSI/CAN 61)

 

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