Ductile iron globe valves are selected for isolation and throttling service in water supply, HVAC, building services, and general low-pressure utility applications at PN10–PN16, where the flow regulation capability of a globe valve is required at a lower cost than cast or forged steel alternatives. The disc-and-seat design provides precise throttling across the full stroke, making ductile iron globe valves the standard specification for water flow balancing, pressure regulation, and utility isolation in building mechanical systems, district heating networks, and municipal water treatment facilities.

GGG40 ductile iron body construction provides greater impact toughness and fatigue resistance than grey cast iron, making it the preferred material for systems subject to pressure cycling, water hammer, and thermal variation in HVAC and water distribution service. EPDM seats are standard for potable water and general water service, with NBR selected for systems handling oil-contaminated water or glycol-based HVAC fluids. Bronze seats are used where metal-to-metal seating is required for higher temperature hot water service.

The open yoke and rising stem configuration is standard for ductile iron globe valves, providing stem visibility for in-service condition monitoring and clear position indication in plant room and above-ground installations. Design standards EN 1503 and DIN 3356 govern ductile iron globe valve design, material requirements, and pressure-temperature ratings for water supply, HVAC, and general utility service applications.