Views: 0 Author: Site Editor Publish Time: 2026-07-04 Origin: Site
Explore core types of industrial valves including control valve, gate valve, ball valve, butterfly valve, globe valve, check valve, safety valve, pressure reducing valve, drain valve, diaphragm valve & plug valve. Learn their functions, unique strengths, applicable media, temperature & pressure ranges, and ideal industrial scenarios for engineering procurement and pipeline design.
All industrial piping systems rely on professional valves to manage fluid flow, pressure, temperature and safety protection. Every valve type carries an exclusive design logic and core positioning: some deliver precise flow regulation, some provide zero-leak isolation, some prevent reverse flow, while others undertake overpressure protection or automatic drainage tasks.
For pipeline engineers, procurement managers and plant maintenance teams, distinguishing the performance boundaries of each valve is the key to avoiding system failure, leakage risk and excessive operation cost. This comprehensive guide covers ten mainstream valve categories, elaborating on their working mechanisms, core advantages, classification, typical application industries and practical selection reference, fully matching petrochemical, power, water treatment, HVAC, pharmaceutical, food and gas transmission projects.
The control valve acts as an intelligent flow regulator that adjusts pipeline flow, pressure and temperature in real time by receiving electrical or pneumatic signals from system sensors. It dynamically modulates valve opening to stabilize process parameters and maintain continuous stable production.
Pneumatic Control Valve
Driven by compressed air, featuring fast response and high regulation accuracy. Widely adopted in chemical reactor feeding and continuous industrial automation lines.
Electric Control Valve
Powered by motor drive, easy to realize long-distance DCS remote control. Mainly used in building HVAC cooling/heating water temperature adjustment.
Self-operated Control Valve
Operates solely by medium self-energy without external power supply. Applied in municipal heating pipelines to automatically balance hot water flow and cut energy consumption.
Precise throttling, real-time signal linkage, multi-drive matching, stable parameter adjustment for continuous process production.
Petrochemical production lines, thermal power auxiliary pipelines, municipal HVAC systems, environmental water treatment dosing pipelines.
Gate valve adopts vertical lifting wedge gate plate as the closing component. When fully open, the internal flow channel is straight and unobstructed with minimal fluid resistance; it is designed for full open / full closed isolation rather than frequent flow regulation.
Elastic single/double wedge gate valve: Suitable for medium & general pressure pipelines, good sealing performance.
Alloy steel high-pressure gate valve (V900 series): Stellite hardfaced sealing surface, withstand up to 650℃ high temperature, comply with ASME B16.34 and API 598, for power plant main steam pipelines.
Pressure seal bonnet gate valve: For ultra-high pressure Class 1500/2500LB working conditions.
Ultra-low flow resistance at full opening, bidirectional tight sealing, large size range DN80-DN400, available in WCB, WC6, WC9 alloy steel materials.
Water supply plants, thermal power steam pipelines, oil & gas long-distance transmission, heating main pipelines.
The ball valve uses a perforated spherical core to control fluid. Rotate 90° to fully open or cut off flow, realizing ultra-fast on-off operation with bubble-tight sealing.
Floating Ball Valve: Simple structure, low cost, for small-diameter low-pressure clean medium pipelines.
Trunnion Mounted Ball Valve: Spherical core fixed by upper & lower shafts, withstand high pressure and large flow, suitable for oil & gas transmission.
3-Way Ball Valve: Realize medium diversion, merging and flow direction switching for chemical batching processes.
90° rapid switch, excellent zero-leakage sealing, wear-resistant sphere, convenient maintenance, compatible with manual, pneumatic and electric actuators.
Natural gas transportation, petrochemical fluid pipelines, building water supply, industrial emergency cut-off systems.
The butterfly valve’s opening component is a disc-shaped butterfly plate rotating around the central shaft. It features ultra-compact body, lightweight design and occupies minimal installation space, supporting both isolation and simple flow adjustment.
Concentric Butterfly Valve: Low cost, general water pipeline isolation service.
Single/Double Eccentric Butterfly Valve: Reduce friction between disc and seat, extend service life, for medium pressure industrial pipelines.
Triple Eccentric Hard Seal Butterfly Valve: Eliminate friction during opening/closing, realize zero leakage, adapt to high temperature, high pressure and corrosive media.
Lightweight & compact structure, low installation space demand, large diameter coverage, low overall project cost.
Municipal sewage treatment, power plant circulating water & desulfurization pipelines, building HVAC, general chemical fluid transmission.
Globe valve relies on vertical lifting spool to change flow channel area. The flow path presents a curved turning structure, which sacrifices partial flow resistance in exchange for ultra-precise flow throttling performance.
Outstanding throttling capability, tight shutoff sealing, stable pressure adjustment, multiple connection options (flange, butt weld, thread).
Steam regulation pipelines, fuel oil delivery, cooling water circulation, small-bore precise dosing systems.
Also named non-return valve, it only permits unidirectional fluid flow and automatically closes to block medium backflow once reverse pressure occurs, effectively protecting pumps, compressors and process equipment from damage.
Lift Check Valve: Spool lifts vertically, compact structure, for high-pressure small-bore pipelines.
Swing Check Valve: Single/double swing disc, low flow resistance, suitable for large-diameter water and oil pipelines.
Butterfly Check Valve: Small volume, easy installation, matching butterfly valve for pump outlet protection.
Automatic operation without manual intervention, prevent medium backflow and equipment water hammer damage.
Water pump outlet pipelines, chemical reaction circulation loops, power plant feedwater systems, household drainage anti-odor pipelines.
Safety valve is a mandatory pressure protection component for pressure vessels and pipelines. When internal pressure exceeds the rated safety threshold, it automatically opens to discharge excess medium; after pressure returns to normal, it closes automatically to avoid explosion and leakage accidents.
Spring Loaded Safety Valve: Widely used, adjustable opening pressure, applicable to most industrial equipment.
Lever Weight Safety Valve: High pressure control accuracy, for stable static pressure equipment.
Pilot Operated Safety Valve: For large-scale high-pressure systems with large discharge capacity.
Full automatic pressure relief without power supply, industrial safety mandatory matching component, wide temperature & pressure adaptation.
Steam boilers, chemical reaction kettles, oil storage tanks, gas water heaters, high-pressure compressor stations.
Pressure reducing valve automatically reduces upstream high fluid pressure and locks downstream pressure at a fixed stable value, eliminating pressure fluctuation impact on subsequent pipeline equipment.
Piston Pressure Reducing Valve: High structural strength, withstand large pressure difference, for industrial high-pressure steam pipelines.
Diaphragm Pressure Reducing Valve: High sensing sensitivity, precise micro-pressure adjustment, laboratory gas supply systems.
Bellows Pressure Reducing Valve: Compensate temperature interference, stable pressure control for hot water heating systems.
Automatic constant pressure, reduce pipeline overpressure risk, extend service life of terminal equipment.
High-rise building water supply, fire-fighting pipe networks, industrial steam systems, laboratory gas supply stations.
Steam trap is dedicated to steam piping systems, automatically drain condensed water while blocking steam leakage, recover steam energy and improve heating efficiency.
Mechanical Steam Trap: Drainage based on density difference, large displacement, for industrial boilers.
Thermostatic Steam Trap: Respond to temperature difference, precise timing drainage, textile printing & dyeing heating equipment.
Thermodynamic Steam Trap: Compact size, quick action, general steam branch pipelines.
Installed at pipeline low points to discharge sediment, sludge, wastewater and residual impurities, prevent pipe blockage and corrosion. Classified into gate type, plug type and ball type drain valves with fast opening & closing and reliable sealing.
Industrial steam heating lines, municipal sewage pipe networks, chemical reactor bottom slag discharge, boiler blowdown pipelines.
Separate medium and internal driving parts via elastic rubber/plastic diaphragm, no medium leakage to external environment. Rubber diaphragm for water & weak acid wastewater; plastic diaphragm for strong corrosive chemical liquid; metal composite diaphragm for high-pressure oil & gas.
Core strengths: Sanitary dead-space-free design, ideal for pharmaceutical and food-grade pipelines.
Control flow by rotating cylindrical plug with through-hole, including ordinary plug valve and oil-sealed plug valve (enhanced sealing for flammable gas media). Fast quarter-turn operation, anti-corrosion performance for chemical and urban gas transmission.
Functional Demand: Confirm isolation, throttling, anti-backflow, pressure relief or drainage as core demand first.
Medium Properties: Water, steam, oil, corrosive chemical, slurry, flammable gas, food/pharmaceutical clean medium decide valve body and sealing material.
Working Condition: Operating temperature (-196℃ cryogenic ~ 650℃ high temp), pressure class (ANSI 150–2500LB, PN10–PN400).
Installation Space: Compact butterfly valve for narrow layout; gate valve for large-diameter main pipelines.
Control Mode: Manual, pneumatic, electric, self-operated automatic drive matching DCS intelligent control system.
Standard Compliance: ASME B16.34, API 598, EN 593, ISO 5208 for global engineering project acceptance.
A1: Gate valve is only for full open/full closed isolation with ultra-low flow resistance, not suitable for frequent flow regulation. Globe valve features curved flow channel with higher pressure drop, but achieves precise throttling and pressure adjustment, widely used in steam and fluid control pipelines.
A2: Diaphragm valve is preferred for pharmaceutical and food industry for its fully isolated sanitary structure without dead corners. For strong acid & alkali corrosive media, lined butterfly valve or PTFE ball valve is recommended; oil-sealed plug valve suits flammable chemical gas transmission.
A3: V900 series alloy steel gate valve with Stellite hardfaced sealing surface is the mainstream choice, compliant with ASME B16.34 and API 598, supporting Class 600–2500LB pressure grade and working temperature up to 590℃. Equipped with electric actuators to realize DCS remote automatic isolation control.
Industrial valves are the core infrastructure of all fluid conveying systems. Each valve type has its exclusive applicable scenarios and performance boundaries. Reasonable valve selection can greatly improve pipeline operation stability, reduce maintenance frequency and lower long-term energy consumption.
Whether for new project pipeline design, old equipment intelligent renovation or spare parts procurement, clarify medium, temperature, pressure and functional requirements first, then match gate, ball, butterfly, control, safety, check and other valves according to working conditions. Customized alloy materials, special sealing structures and multi-type actuators can be provided to meet extreme cryogenic, high-temperature, high-pressure and corrosive harsh working demands.
