Spirax Sarco Valves and Steam System Products Covers steam, condensate, compressed air, boiler rooms, utility and process control systems. Common products include Pressure reducing valve、control valve、valve positioner、safety valve、Check valve、ball valve、globe valve、Boiler blowdown system and Air exhaust valve. For engineering selection, valves should not be selected solely based on caliber or price, but should be comprehensively judged based on medium, pressure, temperature, flow, connection standards, control accuracy, maintenance methods and system safety requirements.
This article organizes popular Spirax Sarco valve products according to the method of "Application Scenario + Valve Type + Popular Models" to facilitate engineers, procurement and maintenance personnel to quickly find suitable product directions, technical knowledge and information access.
Directory
Spirax Sarco pressure reducing valve and relief valve product overview
Quickly select Spirax Sarco valves by application
Application scenarios | Typical requirements | Recommended products |
|---|---|---|
Steam pressure control | Stably reduce high-pressure steam to the pressure required by the process to protect downstream equipment | Pressure reducing valve, regulating valve,control valve、safety valve |
Valve Automation and Process Control | Realize continuous adjustment and remote control of flow, pressure and temperature | Spira-trol control valve、Pneumatic actuator、Electric actuator、SP400/SP500 positioner |
Pipeline isolation and one-way protection | Maintain isolation, prevent backflow, protect instruments and equipment | |
Boiler Rooms and Utilities | Boiler blowdown, water quality control, pressure protection and operational safety | Boiler blowdown control、Bottom drainage system、safety valve, decompression station |
Clean steam and hygienic processes | High cleanliness, traceability, hygienic connections and low contamination risk | M70i/M80i sanitary ball valve, Clean system check valve,SVL488 clean safety valve |
1. Pressure reducing valve, regulating valve and relief valve
Pressure reducing valve It is used to steadily reduce the higher upstream pressure to the pressure required by the downstream process. It is a very common valve type in steam distribution, heat exchange equipment steam supply, utility branch lines and OEM complete equipment. Relief valves or back pressure valves are used to maintain upstream pressure, release excess pressure, or protect system stability. When you need to understand the principle of steam pressure control, you can refer to Pressure control applications and Self-acting pressure control。
Spirax Sarco pressure reducing valve products can generally be divided into direct-acting, pilot-valve, self-acting and station-based pressure control solutions. When selecting, it is recommended to focus on checking the upstream pressure, downstream set pressure, load variation range, medium type, connection method, control accuracy and whether bypass or safety accessories are required.
Product direction | Common models/series | Applicable instructions |
|---|---|---|
Pilot valve type pressure reducing valve | 25P、DP27、DP143、DP163 | Suitable for pressure control of steam main pipes, branches and large load changes |
Direct operated pressure reducing valve | BRV2S、BRV2B、BRV71、BRV73、DRV4、DRV7 | The structure is relatively simple and suitable for small and medium-sized equipment and local voltage stabilization. |
Small traffic or special applications | SRV2S、SRV461、SRV463、SRV505、SRV66 | Can be further selected according to media, hygiene level or small flow requirements |
Overflow and back pressure control | DEP4、DEP7、SDP143 | Used for back pressure, pressure holding or upstream pressure release scenarios |
Pressure reducing valves and steam pressure control products Including pilot valve type, direct acting type and back pressure control scheme. accessible 25P pressure reducing valve、DP27 pressure reducing valve and BRV2S pressure reducing valve Check the structure, connection method and working condition range on this page.
2. Spira-trol control valve
Spira-trol control valve It is Spirax Sarco's modular control valve platform for general industrial process control, suitable for steam and other industrial fluid control. It is not a single model, but a control valve system composed of a valve body, valve trim, actuator, positioner and accessories.
Spira-trol control valve structure diagram
Spira-trol control valves can be combined according to body material, diameter, connection method, flow characteristics, stem seal, trim type and actuation method. For steam systems that require continuous regulation, control valve selection usually takes into account differential pressure, noise, cavitation, shutoff levels, valve trim life, and actuator safety position.
Selection dimensions | Content to follow |
|---|---|
Valve body and connections | ANSI or EN standards, flange, thread, socket welding and other connection forms |
Valve body material | Ductile iron, carbon steel, stainless steel, alloy steel |
Traffic characteristics | Equal percentage, linear, quick opening |
Valve trim | Standard valve trim, noise reduction valve trim, anti-cavitation valve trim, multi-stage squirrel cage valve trim |
Drive mode | Pneumatic actuator, electric actuator |
Matching accessories | SP400/SP500 positioner, EP500, PN9000, AEL series actuator |
Spira-trol control valve, KE73, EP6, BCV43 and KB51 can be used in different steam and industrial fluid control loops. For operating principles, sizing calculations and actuator configuration, see control valve、Steam system control valve selection and Control valve actuators and positioners。
3. Valve positioner and actuator
valve positioner Used to control the opening of the actuator and convert the control signal into a stable and repeatable valve position. For steam control valves, process control valves and automated valve systems, positioners will directly affect control accuracy, response speed, debugging efficiency and maintenance workload.
SP400 and SP500 intelligent digital valve positioners
Spirax Sarco SP400 and SP500 are common intelligent digital electro-pneumatic valve positioners. Both support 4-20 mA input, emphasizing low air consumption, quick commissioning and reliable position feedback. SP400 is more suitable for basic positioning functions, while SP500 is more suitable for scenarios that require more programmable functions, communication capabilities and additional modules.
Products | Suitable for the scene |
|---|---|
Basic conditioning tasks, OEM, general process installations, budget sensitive projects | |
Control loops requiring greater adjustability, communication expansion, feedback modules or diagnostic capabilities | |
Smart locator application, suitable for more complex installation and communication needs | |
EP500 / EP6 | Electropneumatic positioner related applications |
Pneumatic actuator can be combined with control valve to form a pneumatic control solution | |
Electric actuators can be used in electric control valve solutions |
valve positioner Together with pneumatic and electric actuators, it forms a control valve drive and positioning system, which can be selected according to control accuracy, fail-safe position, communication and diagnostic requirements.
4. Safety valve and pressure relief protection
safety valve Used to protect steam, compressed air, boilers and process systems from overpressure and are critical components to protect personnel, equipment and production continuity. Safety valves are often the last line of overpressure protection in boilers, pressure vessels, pressure reducing stations and process systems.
Spirax Sarco safety valve product overview
Safety valve selection should not only look at the caliber, but also need to be comprehensively judged based on the set pressure, discharge capacity, medium, temperature, material, connection standards, regulatory requirements and maintenance and calibration cycles. For clean steam or hygienic processes, additional attention needs to be paid to material traceability, connection methods and cleaning requirements.
Product direction | Common models/series | Applicable instructions |
|---|---|---|
General industrial safety valve | SV60、SV73、SV74、SV615 | For steam, compressed air and general process system protection |
Clean or hygienic applications | SVL488、SVL606 | Used in clean steam, food and beverage, pharmaceutical and other scenarios |
Pressure relief protection applications | pressure relief valve、safety relief valve | Overpressure protection for steam, gas and process systems |
The specific selection of safety valves must be based on the system design pressure, allowable overpressure, discharge capacity and applicable regulations. The model list alone cannot replace engineering calculations. Technical knowledge can be found in Safety valve basics、Safety valve selection and Safety valve caliber calculation。
5. Check valve and anti-backflow protection
Check valve Used to prevent medium backflow and protect flow meters, control valves, process equipment and sensitive instruments. It is often installed where clear unidirectional flow is required such as steam, condensate, process fluids, pump outlets, flow measurement and sanitary systems.
Spirax Sarco check valve product overview
Type | Common models | Main features |
|---|---|---|
Disc check valve | DCV1、DCV3、DCV4、DCV6、DCV8、DCV10、DCV41 | Compact structure, fast response, suitable for general industrial pipelines |
Double Disc/Swing Check Valve | SDCV3, SDCV4, SDCV7, SDCV8, WCV series | Suitable for larger diameter or low pressure drop requirements |
Lift check valve | LCV1、LCV3、LCV4、LCV6、LCV7 | Simple structure and low maintenance |
Sanitary check valve | CVS10 | Ideal for food, pharmaceutical and high-purity fluid systems |
Check valve Used to prevent media backflow and protect instruments, pumps and control equipment. Models such as DCV4, DCV41 and CVS10 can be further selected according to media, connection methods and hygiene requirements; for working principles, please refer to Check valve technical description。
6. Ball valves, globe valves and isolation valves
ball valve Ideal for isolation applications with fast opening and closing, low flow resistance and low maintenance, often used in steam, condensate, thermal oil, compressed air, industrial gases and clean applications.globe valve It is often used in steam and process pipelines where reliable interception, maintenance isolation and long-term sealing are required.
Spirax Sarco M10S ball valve product image
product type | Common models/series | Applicable instructions |
|---|---|---|
Universal ball valve | M10V、M10S、M10H、M10F、M10P、M10HP、M10T | Can be selected according to steam pressure, temperature, valve seat material, fire protection or high pressure gas working conditions |
Clean ball valve | Suitable for clean steam, food and beverage and high-cleanliness processes | |
bellows seal globe valve | Suitable for steam isolation, high temperature and high pressure and reducing valve stem leakage scenarios | |
Automated ball valve | M10Si, M10Vi, M21Si, M21Vi, etc. | Can be equipped with actuator for automatic switch control |
Spirax Sarco bellows seal globe valve on-site installation drawing
Isolation valve products Including ball valves, globe valves and bellows seal globe valves. Series M10S, M10V, BSA and BSA2T can be selected according to media, pressure, temperature and cutoff requirements; technical knowledge can be found in Linear motion isolation valve and Rotary motion isolation valve。
7. Blowdown valves and boiler room valves
Boiler room valves It includes not only ordinary isolation valves, but also valves related to bottom blowdown, continuous blowdown, water quality control, liquid level control and safety protection. Blowdown valves are used to remove sediment from boiler water or control dissolved solids levels and are an important part of boiler safety and efficiency management.
Spirax Sarco bottom drain valve on-site installation diagram
Product direction | Common models/series | Application Notes |
|---|---|---|
Blowdown control valve | BCV、BCV1、BCV20 | Used for continuous blowdown or blowdown control of boilers |
Compressed air driven blowdown valve | ABV21i、ABV40i | For automatic boiler blowdown applications |
Manual boiler blowdown valve | KBV21 | Used for boiler bottom blowdown or maintenance blowdown |
boiler controller | Complete solution with blowdown valve, sensors and control system |
Boiler blowdown control、Bottom drainage system Together with boiler control equipment, it is used for continuous blowdown, bottom blowdown, water quality control and operation protection. For system principles, please refer to Boiler room basics and Bottom discharge。
8. Air exhaust valve, vacuum breaker and pipeline accessories
Air exhaust valve Used to remove air and non-condensable gases from steam, liquid or clean systems to help the system start up faster, reduce heat transfer efficiency loss, and reduce air lock, corrosion and operational instability. it is often associated with filter、sight glass、pressure gauge、Soda separator、vacuum breaker Select together with pipeline accessories.
Spirax Sarco air exhaust valve product series diagram
Product direction | Common models/series | Application Notes |
|---|---|---|
Steam system exhaust valve | For steam system air venting | |
Liquid system automatic air vent valve | AE10S、AE14、AE30、AE44、AE50S、AES14 | For liquid or clean system air and gas exhaust |
Pipe accessories | Filter, sight glass, pressure gauge, soda separator | Together with the valve, it forms a complete pipeline protection and maintenance solution. |
Quick index of popular models
product family | Popular models |
|---|---|
Pressure reducing valve | |
control valve | Spira-trol、KE73、KA33、KB33、KB51、BCV43 |
locator | SP400、SP500、SP7-10、SP7-11、SP7-12、EP500、EP6 |
ball valve | M10S、M10V、M10H、M10F、M10HP、M70i、M80i |
safety valve | SV60、SV73、SV74、SV615、SVL488、SVL606 |
Check valve | DCV3、DCV4、DCV10、DCV41、CVS10 |
globe valve | |
Drainage valve | BCV、BCV1、BCV20、ABV21i、ABV40i、KBV21 |
Air exhaust valve |
Documentation, samples and selection support
The product page provides samples, data sheets, installation and maintenance instructions, selection tables and displacement information. Passable Resources and Design Tools and Steam Knowledge Center View further relevant information and engineering knowledge.
Suggested data entries include:
Product samples and data sheets
Installation and maintenance instructions
Selection and displacement table
CAD, BIM or 3D model
Spare and replacement parts information
Search information by model
Suggested search tips:
Enter product model, product type or data number, such as DP27, SP500, DCV4, M10S
Related products and technology entrance
demand | Recommended entrance |
|---|---|
View all product categories | |
Pressure controls and control valves | |
Isolation valve, ball valve, globe valve | |
Check valves, air exhaust valves, filters and other pipeline accessories | |
Boiler blowdown, level control and boiler room accessories | |
Clean steam valves and sanitary applications | |
Tools, calculators and information portal | |
Engineering services and field support |
FAQ
What parameters should be considered first when selecting a Spirax Sarco valve?
Prioritize the medium, upstream pressure, downstream pressure or set pressure, operating temperature, flow range, pipe diameter, connection standard, valve body material, control accuracy, installation space and maintenance method. For safety valves, pressure reducing valves and control valves, the judgment should also be based on system protection requirements, discharge capacity, pressure difference and load change range.
What is the difference between a pressure reducing valve and a control valve?
Pressure reducing valve Mainly used to reduce the upstream pressure and stabilize it at the target pressure;control valve It usually receives control signals and continuously adjusts the valve opening through actuators and positioners for pressure, temperature or flow control. Under complex working conditions, both may appear in the same steam control system at the same time.
Can safety valves be selected only by diameter?
Not recommended. Safety valve selection must take into account set pressure, allowable overpressure, discharge capacity, medium, temperature, connection standards, regulatory requirements and calibration and maintenance strategies. For steam systems, read first Safety valve selection and Safety valve caliber calculation。
Where can I find valve samples, manuals and design tools?
Can enter first Resources and Design Tools To find information and calculation tools, you can also enter relevant information from specific product pages. If you need to confirm the model based on on-site working conditions, you can Contact us Get further support.
Information and technical support
The product page provides product description, technical information, installation and maintenance information and model entry. The products and installation instructions shown in the pictures are used to illustrate product categories. Specific selection should be confirmed based on on-site working conditions and published data.
Conclusion
Spirax Sarco valve products should not be roughly categorized under the concept of a single "valve". A more reasonable search method is to first determine the system location and control target, and then enter the corresponding product family: pressure control selection Pressure reducing valve and regulating valves, process control options Spira-trol control valve and locator, system protection selection safety valve and Check valve, maintain isolation selection ball valve and globe valve, the boiler room needs Emission control, controller and safety protection combination.
Project selection should be comprehensively confirmed based on medium, pressure, temperature, flow, connection standards, regulatory requirements and maintenance strategies. If you need to further check the model, data or site conditions, you can enter the technical data from the corresponding product page, or through Contact us Get support.
