วาล์วเหล็กหล่อและเหล็กหล่อเหนียว

WDL Valve cast iron and ductile iron valves are used in water supply, wastewater, firewater, HVAC, irrigation and industrial utility systems. Available products include resilient-seated gate valves, butterfly valves, check valves, globe valves, air valves and control valves with manual, pneumatic or electric operation.

Material guidance: Cast iron is generally selected for moderate-pressure utility service where system loads and impact risk are controlled. Ductile iron provides higher tensile strength and toughness and is widely used in buried or above-ground water networks. Material grade alone does not determine suitability: pressure-temperature rating, coating system, seat elastomer, stem, fasteners, potable-water approval, corrosion allowance and flange standard must be checked against the service conditions.

Standards and RFQ data: Valves can be supplied to applicable EN, DIN, BS, AWWA, API, ISO and project specifications. Provide valve type, DN or NPS, pressure rating, medium, temperature, installation orientation, flange or connection standard, coating, seat material, actuator, leakage, testing and certification requirements.