Industrial valves · Клапан запорный Samson
Industrial Shut-off Valves Samson: Design and Application
Samson shut-off valves are precision devices for complete shut-off of flows in industrial pipelines. Valves of this type are designed to operate in an "open/closed" mode and provide the highest class of tightness for a wide range of media: from process water and neutral liquids to aggressive chemical compounds, gases, and superheated steam. EV Group China integrates these valves into systems where guaranteed isolation of circuit sections is required to ensure the safety of production processes and for maintenance.
Key functions of Samson shut-off valves
- Isolation of process lines: Allows for localizing and shutting off segments of pipeline systems for routine maintenance, repair, or modernization without interrupting the main technological cycle.
- Emergency shut-off: Ensures rapid shut-off of working medium flow to prevent the development of accidents related to leaks, ruptures, or other abnormal situations.
- Ensuring tightness: Guarantees complete absence of leaks in the closed position (tightness class "A" according to GOST 9544-2015), which is a critical requirement for toxic, explosive, or expensive media.
Structural and operational advantages of Samson valves
The high operational characteristics of Samson valves, supplied by EV Group China, are achieved through carefully selected engineering solutions and the use of materials certified for operation in demanding conditions:
- Service life and corrosion resistance: Bodies and shut-off elements are made of high-alloy stainless steels and special alloys (e.g., Hastelloy, Monel), ensuring durability when in contact with aggressive media and at high pressures.
- Seal reliability: The use of "metal-to-metal" seat seals or with elastomers (PTFE, PEEK) provides the highest class of tightness and minimizes the risk of working medium emissions into the atmosphere.
- Integration with control systems: The valve design allows for mounting various types of actuators: manual (handwheel/reducer), pneumatic, hydraulic, and electric, which enables easy integration into automated process control systems (APCS).
Types of designs and their specifics
EV Group China supplies Samson shut-off valves in various design versions, optimized for specific technological requirements:
| Valve type | Structural features and application |
|---|---|
| Ball valves | Full-bore design with a rotating spherical element (ball). Provides minimal hydraulic resistance and high actuation speed. Ideal for media not containing abrasive particles. |
| Globe valves (seat valves) | Classic design with linear spindle movement, moving the shut-off element (disc, cone) perpendicular to the flow. Allows for high tightness, but creates greater flow resistance. |
| Butterfly valves (disc gates) | Compact design with a disc rotating around an axis. Optimal for large diameter pipelines and systems with moderate tightness requirements. Characterized by low hydraulic resistance. |
Profile application industries
Samson shut-off valves, supplied by EV Group China, are used in the most critical industrial segments:
- Energy complex: High-pressure steam lines, feedwater circuits at thermal and nuclear power plants, heating systems.
- Oil and gas industry: Pipelines for transporting crude oil, natural gas, refined products; leak protection systems on offshore platforms and refineries.
- Chemical production: Transport lines for acids, alkalis, solvents, and other corrosive substances.
- Water supply and wastewater: Main pipelines, pumping stations, treatment facilities, where guaranteed flow shut-off is required.
Technical FAQ on Samson shut-off valves
What is the main purpose of a Samson shut-off valve?
The main function is the complete and tight shut-off of the working medium flow in a pipeline. Unlike control valves, shut-off valves are not designed for throttling (partial shut-off) of the flow and are operated exclusively in two extreme positions: "fully open" or "fully closed."
How does a shut-off valve differ from a control valve?
The key difference is in the design of the shut-off and sealing unit. In a shut-off valve, it is designed to provide maximum tightness in the closed state. A control valve has a profiled plug for proportional flow rate change, but, as a rule, does not provide complete tightness. In complex systems, sequential installation of both types of valves is often used.
What actuator options does EV Group China offer?
EV Group China supplies Samson valves with various types of actuators: manual (handwheel, reducer), electric actuators (multi-turn and quarter-turn) for integration into APCS, as well as pneumatic and hydraulic actuators for systems requiring high actuation speed and significant forces for control.