Industrial valves · Клапаны Spirax Sarco

Spirax Sarco Valves: Engineering Overview and Classification for Industrial Systems

Spirax Sarco Engineering Solutions for Flow Control

Valves from the British brand Spirax Sarco represent a complex of high-tech components for precise control of working fluids in steam-condensate and pneumatic systems. EV Group China, as a technological partner, provides supply and engineering support for the integration of these solutions into industrial facilities where reliability, safety, and precision of regulation are critically important.

Regulation and Control Systems

This category of valves is designed for modulating and stabilizing key parameters of technological processes.

Control Valves. Provide precise control over flow parameters — temperature, pressure, and flow rate — in response to signals from controllers. Their application is fundamental for the automation and optimization of production cycles.
Pressure Reducing Valves. Designed for automatic reduction and maintenance of stable outlet pressure regardless of inlet fluctuations. This is essential for protecting equipment operating at lower pressures.
Safety Valves. Guarantee system protection against emergency overpressure by automatically discharging excess working fluid volume. They are an essential safety element for pressure vessels and pipelines.

Shut-off and Pipeline Valves

This group of devices performs functions of isolating pipeline sections, preventing abnormal situations, and ensuring tightness.

Bellow Sealed Globe Valves. Provide absolute stem tightness thanks to a metallic bellows, completely eliminating leakage into the atmosphere. This is critically important when working with aggressive, toxic, or expensive media.
Check Valves. Automatically prevent changes in the direction of media flow, protecting pumps, compressors, and other equipment from water hammer and backflow.
Pressure Relief Valves. Actuate when a set pressure threshold is exceeded, providing emergency system relief to prevent damage.
Piston Valves. Designed for systems with high frequency of opening/closing cycles, ensuring durability and reliability in intensive operating conditions.
HV3 Bronze Body Valves. Optimized for steam and water applications. The bronze body provides increased corrosion resistance and durability in standard industrial applications.

Where we apply

Spirax Sarco valves and their analogs from EV Group China are used in critical components of the following industries:

Energy: steam control in boilers, turbines, and steam lines at combined heat and power plants and state district power plants.
Chemical industry: regulation of aggressive media flows, thermomass, and process steam.
Pharmaceuticals and biotechnology: pure steam systems for sterilization, maintaining precise temperature regimes in reactors.
Food industry: pasteurization, sterilization, blanching, and other processes requiring precise control of steam and liquids.
Oil and gas industry: pipeline heating systems, process control at oil and gas treatment facilities.
Pulp and paper production: drying cylinders, digesters, and stock preparation lines.

What to replace with / analogs

Selecting an analog for Spirax Sarco valves is an engineering task that requires a precise analysis of technical parameters. Simple replacement by diameter (DN) and pressure (PN) is unacceptable. When choosing an alternative from EV Group China or other manufacturers (e.g., ARI-Armaturen, Gestra), the following must be considered:

Flow capacity (Kvs): a key parameter determining the media flow rate at a given pressure drop.
Body and sealing materials: must be fully compatible with the working medium, temperature, and pressure.
Connection type: flanged (with indication of flange standard), threaded, for welding.
Operating temperature and pressure range: the analog must fully cover the design values.
Control characteristic: for control valves, a linear or equal percentage characteristic is important.

EV Group China engineers are ready to perform a detailed technical calculation and select a certified analog that fully complies with the specifications of the original product.

What to clarify with the supplier

Before placing an order for the supply of Spirax Sarco valves or their analogs, we recommend requesting the following package of documents and information from the supplier, such as EV Group China:

Certificate of conformity: confirmation of product compliance with the requirements of technical regulations (e.g., TR CU 010/2011, TR CU 032/2013).
Material certificate 3.1 according to EN 10204: a document certifying the chemical composition and mechanical properties of the materials from which the valve is made.
Product passport: contains information about the factory number, date of manufacture, results of hydraulic tests, and warranty obligations.
Installation and operation manual: instructions containing requirements for installation, setup, and maintenance.
Information about the batch and manufacturer: to ensure traceability and confirm the authenticity of the products.
Warranty conditions: clarify the term and conditions for providing a warranty on the supplied equipment.