Ductile Iron Grooved OS&Y Valve designed for dual-purpose piping installations that combine fire protection and domestic water lines

Grooved End OS&Y Gate Valve(Hants Model HGO-GG), allows a quickly installation. The valve operates by opening and closing via a gate which lowers into or rises out of the valve. The grooves allow the valve to be quickly and securely connected to a piping system using grooved couplings.

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 Hants Grooved End OS&Y Gate Valve for fire protection and drinking water systems

Application of Grooved End OS&Y Gate Valve

This product is designed for dual-purpose piping installations that combine fire protection and domestic water lines. It features mandatory NSF certification, which ensures that while the valve is structurally capable of handling high-pressure emergency fire situations, its internal materials also guarantee that the drinking water flowing through it remains non-toxic, lead-free, and free from contamination.
Designed for critical fluid control zones within high-rise commercial offices, luxury apartments, and five-star hotels. Installed across booster pump rooms, water transfer lines, and roof tank systems, it provides dual assurance: UL reliability to handle sudden emergency fire-pump activation pressures, alongside NSF safety for high-quality clean water delivery to residents.
Engineered specifically to meet the strict construction and thickness requirements of the AWWA standard, making it ideal for municipal utility grids, water treatment facilities, and public works. Its robust ductile iron construction handles long-term buried or exposed water distribution layouts, while ensuring all passing municipal water complies with health standards.
An ideal choice for advanced manufacturing plants, semiconductor fabrication facilities, and chemical processing zones. This multi-certified valve streamlines on-site inventory by serving as a unified standard for both high-purity process water lines and the factory's primary industrial fire protection ring mains.
Built for dedicated fire protection lines, including main riser systems, pump connections, and zone control stations. Meeting AWWA structural standards enables the valve body to withstand high working pressures and potential system water hammer, while the UL Listing ensures strict compliance with international fire safety codes and building insurance mandates.
Ideal for multi-use reservoir systems, this valve effectively manages shared volumes of domestic water and dedicated fire reserve water. Located on the suction or discharge lines of the reservoir, it ensures that the stored water meets stringent public health standards. Additionally, the valve is fully certified to discharge maximum firefighting flows immediately when needed.

Key Features and Benefits of Grooved End OS&Y Gate Valve

Certified to both UL and NSF standards, seamlessly meeting the stringent reliability requirements of fire protection systems while guaranteeing non-toxic water safety for potable water and shared commercial/residential water systems.
Coated with high-grade epoxy both internally and externally, providing excellent corrosion resistance, preventing rust contamination, and ensuring compliance with strict drinking water safety regulations.
Engineered with high-strength ductile iron in compliance with AWWA C515 standards, offering superior pressure ratings, high structural durability, and reliable performance in fire protection systems.
Designed with grooved ends to enable rapid alignment and installation using standard grooved couplings, significantly reducing labor time, on-site equipment costs, and long-term maintenance efforts.
Features a visual Outside Screw and Yoke (OS&Y) rising stem design that allows operators to instantly verify the valve's open or closed position, with pre-drilled or easily adaptable structures for installing supervisory signal switches.

Frequently Asked Questions(FAQ) about Grooved End OS&Y Gate Valve

Q1: How does the dual UL and NSF status benefit combined or shared water systems?

In modern commercial or high-rise residential projects, shared water infrastructure is a massive trend for saving space and lowering layout costs. A standard fire valve can compromise drinking water quality, while a basic civil valve cannot handle fire-fighting pressures. Our multi-certified valve bridges this gap perfectly, maintaining absolute water purity for daily use under NSF guidelines, while remaining instantly ready to handle extreme firefighting demands under UL safety mandates.

Q2 : What competitive advantages does the AWWA standard ductile iron construction provide?

Built to heavy-duty AWWA structural and thickness requirements, the ductile iron body offers significantly higher tensile strength and elongation than standard cast iron. This ensures a lighter overall weight for easier handling while delivering robust structural integrity. It easily handles continuous high working pressures and severe fluid system pressure surges without fracturing, maximizing the lifespan of your installation.