{"id":4871,"date":"2025-09-08T08:36:42","date_gmt":"2025-09-08T08:36:42","guid":{"rendered":"https:\/\/tops-valve.com\/?p=4871"},"modified":"2025-09-25T06:40:43","modified_gmt":"2025-09-25T06:40:43","slug":"how-to-choose-the-right-industrial-valves-from-different-type-valves","status":"publish","type":"post","link":"https:\/\/tops-valve.com\/ru\/how-to-choose-the-right-industrial-valves-from-different-type-valves\/","title":{"rendered":"How to Choose the Right Industrial Valves from Different Type Valves"},"content":{"rendered":"
In fluid piping systems, Industrial valves are crucial for controlling equipment and pipeline isolation, regulating flow, preventing backflow, and managing pressure relief. Designed to handle diverse media including air, water, steam, corrosive materials, slurries, oils, liquid metals, and radioactive substances, selecting the appropriate valve requires a thorough understanding of their technical properties, selection processes, and key criteria.<\/div>\n
\n
I. Classification of Valves<\/div>\n
Valves are categorized based on several key attributes:<\/div>\n
    \n
  1. Operation Mode<\/li>\n
  2. \n
      \n
    • Automatic Valves: Operate autonomously using the energy of the working medium (e.g., check valves, safety relief valves, pressure regulators, steam traps).<\/li>\n
    • Actuated Valves: Operated manually or via external power sources (electric\/hydraulic\/pneumatic actuators). Examples include gate, globe, ball, butterfly, and plug valves.<\/li>\n
    • \n
        \n
      • Subclasses by closure movement:
        \n\u2022 Gate-type (linear motion along seat center line)
        \n\u2022 Plunger\/Sphere-type (rotating around central axis)
        \n\u2022 Rotary-form (external shaft rotation)
        \n\u2022 Disc-type (internal axis rotation)
        \n\u2022 Sliding-type (perpendicular channel movement)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n
      • Functional Purpose<\/li>\n<\/ol>\n
        \n\n\n\n\n\n\n\n\n
        Cut-off<\/td>\nStop valves, gate valves<\/td>\nConnect\/disconnect pipeline sections<\/td>\n<\/tr>\n
        Check<\/td>\nSwing checks<\/td>\nPrevent reverse flow<\/td>\n<\/tr>\n
        Regulation<\/td>\nControl valves, PRVs<\/td>\nModulate pressure\/flow<\/td>\n<\/tr>\n
        Diversion<\/td>\nThree-way manifolds<\/td>\nChange flow direction<\/td>\n<\/tr>\n
        Safety relief<\/td>\nSafety valves<\/td>\nRelease excess pressure for system protection<\/td>\n<\/tr>\n
        Specialty<\/td>\nSteam traps, vents<\/td>\nNiche applications (draining condensate)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
          \n
        1. Actuation Method<\/li>\n
        2. \n
            \n
          • Manual (handwheel\/lever + worm gears for high torque needs)<\/li>\n
          • Electric motor drive<\/li>\n
          • Hydraulic cylinder actuation<\/li>\n
          • Compressed air pneumatics<\/li>\n<\/ul>\n<\/li>\n
          • Pressure Rating<\/li>\n<\/ol>\n
            \n\n\n\n\n\n\n\n
            Vacuum<\/td>\n<0.1 MPa (abs)<\/td>\nLow-pressure steam systems<\/td>\n<\/tr>\n
            Low<\/td>\n\u22641.6 MPa<\/td>\nGeneral water distribution<\/td>\n<\/tr>\n
            Medium<\/td>\n2.5\u20136.4 MPa<\/td>\nIndustrial processes<\/td>\n<\/tr>\n
            High<\/td>\n10.0\u201380.0 MPa<\/td>\nPower plants<\/td>\n<\/tr>\n
            Ultra-high<\/td>\n\u2265100.0 MPa<\/td>\nPetrochemical refineries<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
              \n
            1. Temperature Service<\/li>\n
            2. \n
                \n
              • Ordinary: \u201340\u00b0C to 425\u00b0C (Standard process fluids)<\/li>\n
              • High: 425\u00b0C\u2013600\u00b0C (Heat exchangers)<\/li>\n
              • Refractory: >600\u00b0C (Furnace gas handling)<\/li>\n
              • Low temp: \u2013150\u00b0C to \u201340\u00b0C (Refrigeration cycles)<\/li>\n
              • Cryogenic: <\u2013150\u00b0C (LNG transfer systems)<\/li>\n<\/ul>\n<\/li>\n
              • Size Range<\/li>\n
              • \n
                  \n
                • Small: DN <40mm (Instrumentation branches)<\/li>\n
                • Medium: DN50\u2013300mm (Main plant lines)<\/li>\n
                • Large: DN350\u20131200mm (Primary infrastructure)<\/li>\n
                • Extra large: DN\u22651400mm (River crossing projects)<\/li>\n<\/ul>\n<\/li>\n
                • End Connections<\/li>\n
                • \n
                    \n
                  • Flanged bolted joints (ASME B16.5 compliant)<\/li>\n
                  • Screwed threaded ends (Socket weld alternatives)<\/li>\n
                  • Butt welding necks (Sanitary food grade options)<\/li>\n
                  • Wafer\/clamped designs (Quick maintenance access)<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
                    \n
                    II. Valve Performance Traits<\/div>\n
                    Every valve exhibits two fundamental profiles affecting suitability:<\/div>\n
                      \n
                    1. Operational Traits defining functional capabilities:<\/li>\n
                    2. \n
                        \n
                      • Type (isolation vs modulating vs safety)<\/li>\n
                      • Body material compatibility (CS, SS316, Alloy 20 etc.)<\/li>\n
                      • Actuator interface standards (ISO mountings)<\/li>\n<\/ul>\n<\/li>\n
                      • Structural Traits governing installation constraints:<\/li>\n
                      • \n
                          \n
                        • Face-to-face dimensions per ANSI B16.10<\/li>\n
                        • Sealing technologies (live-loaded packing)<\/li>\n
                        • Stem designs (non-rising vs rising stem variants)<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
                          \n
                          III. Systematic Valve Selection Process<\/div>\n
                          Follow this structured approach for optimal results:<\/div>\n
                            \n
                          1. Define Service Conditions<\/li>\n
                          2. \n
                              \n
                            • Process purpose (on\/off vs throttling)<\/li>\n
                            • Fluid properties (corrosivity index, viscosity profile)<\/li>\n
                            • T\/P parameters at design point & extremes<\/li>\n<\/ul>\n<\/li>\n
                            • Match Line Standards<\/li>\n
                            • \n
                                \n
                              • Nominal bore alignment with pipe ID schedules<\/li>\n
                              • Flange drilling compatibility (raised face vs ring joint)<\/li>\n<\/ul>\n<\/li>\n
                              • Select Actuation Protocol<\/li>\n
                              • \n
                                  \n
                                • Manual override requirements? (Failsafe positioners)<\/li>\n
                                • Control signal types (4\u201320 mA analog input)<\/li>\n<\/ul>\n<\/li>\n
                                • Choose Material Construction<\/li>\n
                                • \n
                                    \n
                                  • Consider galvanic corrosion risks between wetted parts<\/li>\n
                                  • Select seat materials resistant to wire drawing effects<\/li>\n<\/ul>\n<\/li>\n
                                  • Determine Body Style Based on flow dynamics:<\/li>\n
                                  • \n
                                      \n
                                    • Straightway designs minimize turbulence losses \u2713Full port ball valves ideal here<\/li>\n
                                    • Directional changes require angle patterns \u2713Three-way diverters preferred<\/li>\n<\/ul>\n<\/li>\n
                                    • Set Performance Targets For automated units:<\/li>\n
                                    • \n
                                        \n
                                      • Max allowable differential pressure drop (\u0394Pmax)<\/li>\n
                                      • Leakage class certification (API Class VI required?)<\/li>\n<\/ul>\n<\/li>\n
                                      • Reference Manufacturer Data To validate choices against:<\/li>\n
                                      • \n
                                          \n
                                        • Cv flow coefficient curves (Liquid vs gas correction factors applied)<\/li>\n
                                        • Torque requirement charts (Cold start vs hot operation margins checked)<\/li>\n
                                        • Cavitation damage prevention guides (Trim modifications needed?)<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
                                          \n
                                          IV. Key Application Guidelines<\/div>\n
                                          Specific recommendations by service type:<\/div>\n
                                          \n\n\n\n\n\n\n\n\n
                                          \n
                                          \u0417\u0430\u0434\u0432\u0438\u0436\u043a\u0438<\/div>\n<\/td>\n
                                          		Full port isolation; high temp steam; viscous fluids like heavy oils<\/td>\nFrequent throttling \u2013 causes disc erosion<\/td>\nAdd flush ports for solid-handled models<\/td>\n<\/tr>\n
                                          \n
                                          \u0428\u0430\u0440\u043e\u0432\u044b\u0435 \u043a\u043b\u0430\u043f\u0430\u043d\u044b<\/div>\n<\/td>\n
                                          		Precision regulation in non-abrasive service; tight shutoff<\/td>\nSlurries \u2013 deposit buildup jams trim components<\/td>\nUse extended bonnets for cryogenic duties<\/td>\n<\/tr>\n
                                          \n
                                          \u0428\u0430\u0440\u043e\u0432\u044b\u0435 \u043a\u043b\u0430\u043f\u0430\u043d\u044b<\/div>\n<\/td>\n
                                          		Fast cycling; bidirectional sealing; multiphase transport<\/td>\nSubmicron biotech fluid paths \u2013 trapped volume risk<\/td>\nTrunnion mounted for large diameter sizes<\/td>\n<\/tr>\n
                                          \n
                                          Butterflies<\/div>\n<\/td>\n
                                          		Large line sizes where space constrained; low pressure drop acceptance<\/td>\nVapor service \u2013 disc lap causes vapor locking<\/td>\nDouble offset design improves sealing<\/td>\n<\/tr>\n
                                          \n
                                          \u041e\u0431\u0440\u0430\u0442\u043d\u044b\u0435 \u043a\u043b\u0430\u043f\u0430\u043d\u044b<\/div>\n<\/td>\n
                                          		Gravity feed prevention; pump protection<\/td>\nHigh viscosity \u2013 slow closing leads hammer blow<\/td>\nTilting disc reduces slam potential<\/td>\n<\/tr>\n
                                          \n
                                          Diaphragms<\/div>\n<\/td>\n
                                          		Corrosive chemical dosing; sanitary food washing cycles<\/td>\nSuspended solids \u2013 diaphragm puncture hazard<\/td>\nPTFE lining offers broad chemical resistance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
                                          \n
                                          V. Crucial Considerations During Final Placement<\/div>\n
                                            \n
                                          1. Flow Regime Impact: Turbulent vs laminar regime affects pressure recovery characteristics. Choose contoured bodies for high Reynolds numbers.<\/li>\n
                                          2. Noise Abatement: Install downstream of restrictive orifices to suppress aerodynamic noise generation. Consider sound suppression trim options.<\/li>\n
                                          3. Vibration Damping: Position away from mechanical equipment excitation sources whenever possible. Use flexible connectors if proximity unavoidable.<\/li>\n
                                          4. Maintainability Access: Ensure adequate clearance around actuators per API 6D guidelines. Allow minimum clearance per ASME B31.1 for maintenance roads.<\/li>\n
                                          5. Human Engineering: Locate handwheels within easy reach of operators while standing upright. Avoid overhead placement requiring ladders for routine operation.<\/li>\n<\/ol>\n
                                            \n
                                            By following these steps and checking manufacturer performance curves against real operating conditions, engineers can choose valves that are safe, reliable, and efficient for any fluid handling system. Even small mismatches between valve features and system needs may cause failures like seat wear, stem sticking, or actuator overload. Always test critical service valves in the factory under worst-case conditions before final installation.<\/div>","protected":false},"excerpt":{"rendered":"

                                            In fluid piping systems, Industrial valves are crucial for controlling equipment and pipeline isolation, regulating flow, preventing backflow, and managing pressure relief. Designed to handle diverse media including air, water, steam, corrosive materials, slurries, oils, liquid metals, and radioactive substances, selecting the appropriate valve requires a thorough understanding of their technical properties, selection processes, and […]<\/p>\n","protected":false},"author":2,"featured_media":4954,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4871","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/tops-valve.com\/ru\/wp-json\/wp\/v2\/posts\/4871","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tops-valve.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tops-valve.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tops-valve.com\/ru\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/tops-valve.com\/ru\/wp-json\/wp\/v2\/comments?post=4871"}],"version-history":[{"count":1,"href":"https:\/\/tops-valve.com\/ru\/wp-json\/wp\/v2\/posts\/4871\/revisions"}],"predecessor-version":[{"id":5340,"href":"https:\/\/tops-valve.com\/ru\/wp-json\/wp\/v2\/posts\/4871\/revisions\/5340"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tops-valve.com\/ru\/wp-json\/wp\/v2\/media\/4954"}],"wp:attachment":[{"href":"https:\/\/tops-valve.com\/ru\/wp-json\/wp\/v2\/media?parent=4871"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tops-valve.com\/ru\/wp-json\/wp\/v2\/categories?post=4871"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tops-valve.com\/ru\/wp-json\/wp\/v2\/tags?post=4871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}