A rising stem cast iron gate valve uses a stem that moves vertically with the gate, allowing the operator to identify the approximate valve position from the external stem movement. The outside-screw-and-yoke arrangement keeps the operating thread outside the main flow passage. This construction is commonly used for waterworks and compatible utility isolation where visible operation and accessible maintenance are important. Speciality Valve manufactures rising stem cast iron gate valve configurations according to the required valve size, pressure rating, seating arrangement and connection standard. Municipal water mains: Sectional isolation across distribution and transmission networks. Water treatment plants: Shut-off of compatible raw-water and treated-water piping. Fire-water systems: Isolation of dedicated fire-protection pipeline sections. Irrigation networks: Isolation of agricultural water-distribution lines. Pumping stations: Shut-off around compatible water pumping equipment. External stem travel: Movement provides a visible indication of gate position. OS&Y construction: The screw mechanism remains outside the primary fluid passage. Vertical gate movement: Stem rotation moves the gate between the seating surfaces. Solid wedge: Provides a rigid closure element for isolation service. Full opening: The gate retracts sufficiently to clear the principal flow passage. Multi-turn operation: Gradual stem movement allows controlled opening and closing. Gear operation: A gearbox can be incorporated where operating torque makes direct handwheel operation impractical. Valve position: Rising stem movement allows easier visual identification during operation. Installation space: The valve requires sufficient vertical clearance for complete stem travel. Pipeline pressure: Body, bonnet and seating components must be rated for the system pressure. Water chemistry: Metallic and sealing materials should be compatible with the water being handled. Operating torque: Valve size, differential pressure and seat design influence operating requirements. Maintenance access: The external stem and yoke arrangement provides access to the operating mechanism. EN 1171: Industrial gate valve requirements for applicable configurations. BS 5163: Waterworks gate valve requirements where applicable. AWWA C500: Applicable metal-seated waterworks gate valve requirements. ASME B16.1: Cast iron flange dimensions where applicable. EN 1092-2: Flange dimensions for applicable cast iron configurations. EN 558: Face-to-face dimensions where applicable. EN 12266-1: Pressure testing requirements for metallic valves. ISO 5208: Pressure and leakage testing of metallic valves. Planning a waterworks or utility isolation project? Speciality Valve can discuss the appropriate rising stem cast iron gate valve arrangement based on your pipeline configuration and service requirements.Rising Stem Cast Iron Gate Valve Manufacturer in India
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Rising Stem Cast Iron Gate Valve
Rising Stem Cast Iron Gate Valve from Speciality Valve.
Categories: Gate Valve
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