Ductile Iron Gate Valve Non Rising Stem

The Ductile Iron Gate Valve Non-Rising Stem is used to completely shut off fluid flow or provide full flow in a pipeline when in the fully open position. This means they should be used in the fully closed or fully open position. They are used in on/off, non-throttling services and are suitable for most mediums, including steam, water, oil, air, and gas. Commonly used in refineries and petrochemical plants where pressure remains relatively low, NRS Gate Valves add stability where temperatures can get high (300 °C+).

The non-rising stem has no upward movement, so the Ductile Iron Gate Vale Non-Rising Stem takes up less space. When the handwheel is turned in a clockwise rotation, the disc travels up the stem while the stem itself remains vertically stationary. The disc is also threaded internally and does not move up and down as it has the end of the stem threaded into the disc (gate). Due to their dimensions not changing during operation, these valves take up less space and are better suited to underground or confined environments.