A NRS carbon steel gate valve uses an internally threaded stem that rotates within the valve while the gate moves vertically to open or close the flow passage. Unlike a rising stem design, the stem does not travel upward during operation, making the arrangement useful where overhead clearance is limited. Speciality Valve manufactures NRS carbon steel gate valve configurations for pipeline and process isolation, with body, gate, seat, stem, actuation and connection details selected according to the service conditions. Stem rotation: The operating stem rotates without extending above the valve body. Vertical gate travel: Rotational stem movement is converted into axial movement of the wedge. Wedge seating: The gate moves between the seats to interrupt the flow passage. Internal threading: The stem thread remains within the valve body during normal operation. Compact profile: Eliminates the external vertical stem travel associated with rising stem valves. Full-bore flow path: The wedge is withdrawn from the principal passage when the valve is fully open. Stem nut arrangement: Transfers operating torque into gate movement through the threaded mechanism. Refineries: Hydrocarbon and utility-line isolation. Gas transmission: Shut-off service on compatible gas pipelines. Petrochemical plants: Isolation of process and utility piping. Power plants: Water, steam and auxiliary-system isolation where compatible. Chemical plants: Process-fluid isolation with suitable material selection. Isolation duty: Designed primarily for fully open or fully closed operation. Pressure drop: A fully open wedge gate can provide a relatively unobstructed flow path. Bidirectional flow: Gate valves can generally accommodate flow in either direction unless the specific design states otherwise. Controlled closure: Multi-turn operation provides gradual gate movement. Overhead clearance: The non-rising stem configuration is advantageous where vertical space is restricted. Throttling limitation: Prolonged operation in a partially open position can cause undesirable flow effects and seating wear. Operating torque: Required torque varies with pressure, size, seat friction and differential pressure. ASME B16.34: Applicable valve construction and pressure-temperature requirements. ASME B16.10: Face-to-face and end-to-end dimensions where applicable. ASME B16.5: Flange dimensions for applicable flanged configurations. ASME B16.25: Butt-weld end dimensions where applicable. API 598: Inspection and pressure testing where specified. ISO 5208: Pressure and leakage testing of metallic valves where applicable. Shell testing: Verifies pressure-boundary integrity. Seat testing: Evaluates closure and leakage performance. Material inspection: Confirms specified body and component materials. Share your line size, pressure class, service medium, operating temperature and connection type with Speciality Valve to get a valve configuration suited to your piping requirements.NRS Carbon Steel Gate Valve Manufacturer in India
Non-Rising Stem and Wedge Construction:
NRS Gate Valve Technical Specifications:
NRS Carbon Steel Gate Valve Applications:
NRS Gate Valve Material Grades:
NRS Gate Valve Operating Performance:
Carbon Steel Valve Material Options:
Size, Rating and Connection Requirements:
Codes, Testing and Inspection:
Ready When You Are
Need the right valve for your process?
We respond within 24 hours.