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Model S1

Product catalog summary

Basic Information
The Model S1 is a self-operated pressure reducing valve with bellows, suitable for liquids, compressed air, neutral gases, and steam. It operates by closing when outlet pressure increases. The valve is available in sizes DN15 to DN200 (1/2” to 8”) with a Kv range of 3.5 to 450 m³/h·bar and a Cv range of 4.0 to 520 gpm·psi. It can handle temperatures from -40 to 250 ºC (-40 to 482 ºF) and has a maximum inlet pressure of 40 barg for sizes up to DN50 and 25 barg for sizes up to DN200. Connections are available in flanged (DIN - ANSI) or threaded (BSP - NPT) ends.

Materials
The valve is constructed from various materials including ductile iron, bronze, carbon steel, and stainless steel for different parts such as the body, guide stem, and cover. Specific materials are chosen based on ANSI/ASTM and DIN/EN standards.

Standard Configurations
The valve is available in multiple configurations with different Kv and Cv values depending on the size. The actuator diameter varies according to the required outlet pressure, with specific diameters provided for different pressure ranges and valve sizes.

Main Design Standards
The valve design adheres to several standards including EN 558-1 for face-to-face dimensions, EN 1092-1 for flanges, ISA 75.03, ASME B16.5, and others for pressure tests and industrial control valves.

Operation
The valve controls pressure by adjusting the position of the valve plug, which is influenced by the operating diaphragm and positioning springs. The downstream pressure is tapped and transmitted to the diaphragm, converting it into a positioning force that adjusts the valve plug. The valve is fully balanced with a balancing bellows to ensure forces from upstream and downstream pressures are balanced.

Standard Installations
The document provides a standard installation guide, emphasizing the importance of correct assembly to ensure proper operation. It includes components like check valves, filters, pressure gauges, and safety valves.

Disclaimer
The document concludes with a disclaimer noting that specifications and technical data are subject to change without notice, and users should verify all data before use.

Catalog excerpts

Model S1 - Pressure Reducing Valve with bellows Pressure Reducing Valve - Model S1 BASIC INFORMATION Type Operation Model Connections Ends Ratings Sizes Suitable for Self-operated pressure reducing valve with bellows Valve closes when outlet pressure increases S1 Flanged (DIN - ANSI) or Threaded (BSP - NPT) RF - RF, NPT, BSP PN25 - PN40 (150# - 300#) DN15 to DN200 [mm] (1/2” to 8”) Liquids, compressed air, neutral gases and steam Kv Cv Temperature Inlet max. pressure Outlet pressure 40 [barg] up to DN50 (2") 25 [barg] up to DN200 (8") 0,1 - 16 [barg] PARTS GALILEO 8, POL. IND. CAN ESTELLA 08635 REV. 01/ 14 ST ESTEVE SESROVIRES, BARCELONA, SPAIN www.efSVaIVeS.c°m This information is subjected to changes

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Model S1 - Pressure Reducing Valve with bellows GALILEO 8, POL. IND. CAN ESTELLA 08635 REV. 01/ 14 ST ESTEVE SESROVIRES, BARCELONA, SPAIN www-efsvalves-c°m This information is subjected to changes

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Model S1 - Pressure Reducing Valve with bellows IMPORTANT NOTE: Kv or CV reduced is available GALILEO 8, POL. IND. CAN ESTELLA 08635 REV. 01/ 14 ST ESTEVE SESROVIRES, BARCELONA, SPAIN www.efsvalves.c°ITI This information is subjected to changes

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ACTUATOR DIAMETER ACCORDING TO REQUIRED OUTLET PRESSURE: D [mm] Outlet Range [barg] CAGE ANTI CAVITATION (OPTIONAL) MAIN DESIGN STANDARDS Face-to-face dimensions flanges drilled acc. to EN 1092-1 Flanges and their joints Face-to-face dimensions flanges drilled acc. to ASME B16.5 or EN 558-2 Flanges and Flanged Ratings for Class 150, 300, etc. Requirements for BSP thread National Pipe Thread Taper Shell design strength - Tabulation method for steel valve shells Industrial control valves - Flow capacity - Test procedure Pressure tests, test procedures and acceptance criteria GALILEO 8, POL. IND....

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Model S1 - Pressure Reducing Valve with bellows The medium flows through the valve body in the direction indicated by the arrow. The position of the valve plug determines the flow rate across the area released between the plug and seat. To control the pressure, the operating diaphragm is pretensioned by the positioning springs and the set point adjuster. As a result, the valve is opened by the force of the positioning springs in pressureless state (p1 = p2). The downstream pressure p2 to be controlled is tapped downstream of the valve and transmitted through the control line to the operating...

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Model S1

Model S1

Catalog excerpts

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