Schubert & Salzer – Type 8023 GS3 High Temp Sliding Gate Valve

Overview

The Schubert & Salzer Type 8023 GS3 is a high-temperature sliding gate control valve designed for modulating and high-cycle on/off applications at media temperatures up to 986°F — the highest media temperature rating across the entire Schubert & Salzer valve lineup. Similar in design to the Type 8020 GS3, the Type 8023 adds engineered high-temperature capability and is equally suited for high-cycle applications where rapid and repeatable operation at elevated temperatures is required.

Available in sizes 1/2″ to 10″ in stainless steel CF8M body with 316L cover, the Type 8023 is rated to 145/580 psi and ANSI #150 and #300. The NAMUR interface enables universal positioner assembly with pneumatic, electro-pneumatic, and digital positioners, as well as direct on/off operation. Special versions are available on request for extended temperature or other application requirements. TA-Luft / ISO 15848-1, CRN, and SIL approvals are standard.

Features & Benefits

• Media temperature capability up to 986°F — the highest rating in the Schubert & Salzer valve portfolio; special versions available on request
• Ideal for high-cycle applications at elevated temperatures requiring rapid, repeatable valve operation
• GS3 sliding gate operating principle similar in design to the Type 8020 — proven platform adapted for extreme temperature service
• NAMUR interface for universal positioner assembly — compatible with pneumatic, electro-pneumatic, and digital positioners
• Stainless steel CF8M body with 316L cover for resistance across a broad range of high-temperature process media
• Wafer-type body minimizes face-to-face length for compact installation between ANSI #150 or #300 flanges
• Metal bellows accessory available for zero-emission stem sealing at high temperatures
• TA-Luft / ISO 15848-1 fugitive emissions compliance — standard approval
• Available in sizes 1/2″ to 10″ rated to 145/580 psi and ANSI #150 and #300
• Optional ATEX non-electrical approval (II 2G Ex h IIC T6…T1 X Gb; II 2D Ex h IIIC 85°C…530°C X Db) for hazardous area installations
• CRN Certificate, EC and UKCA Declarations of Conformity, and Safety Manual with SIL manufacturer’s declaration available

Technical Specifications

• Size: 1/2″ – 10″
• Pressure: 145/580 psi; ANSI #150; ANSI #300
• Body material: Stainless steel CF8M with 316L cover
• Media temperature: -76°F to 986°F (special versions available on request)
• Actuator: Diaphragm actuated; NAMUR interface for universal positioner assembly
• Connection: Wafer type (installs between flanges)
• Media compatibility: Steam, liquids, gases
• ATEX (optional): II 2G Ex h IIC T6…T1 X Gb; II 2D Ex h IIIC 85°C…530°C X Db
• Approvals & Certificates: CRN Certificate, TA-Luft / ISO 15848-1, EC Declaration of Conformity, UKCA Declaration of Conformity, Safety Manual with SIL manufacturer’s declaration

Applications

• High-temperature modulating and on/off control of steam, liquids, and gases at media temperatures up to 986°F
• High-cycle valve applications in elevated temperature process environments
• Chemical, petrochemical, energy, and metallurgical process plants requiring extreme temperature capability
• Low-emission high-temperature installations requiring TA-Luft / ISO 15848-1 fugitive emissions compliance
• Zero-emission high-temperature applications requiring metal bellows stem sealing
• Hazardous area installations requiring ATEX non-electrical approval
• Applications requiring CRN certification for Canadian pressure vessel and piping compliance
• Applications requiring SIL compliance

Type 8023 GS3 Accessories

Positioners

• Pneumatic Positioner – For analog pneumatic control signal integration with the Type 8023 GS3 via the NAMUR interface.
• Electro-Pneumatic Positioner – For 4–20mA or other analog signal control loop integration via the NAMUR interface.
• Digital Positioner – For advanced digital control, diagnostics, and fieldbus integration via the NAMUR interface.
• Without Positioner – Direct pneumatic supply for on/off operation without positioner.

Additional Accessories

• Metal Bellows – Metal bellows stem seal for zero-emission applications at high temperatures.
• Limit Switch – Position feedback accessory providing open/close status signal for process monitoring and control integration.
• Position Feedback – Analog or digital position feedback device for continuous valve position monitoring.
• Manual Override – Allows manual operation of the valve independent of pneumatic supply for maintenance or emergency use.
• Pilot Valve – Solenoid pilot valve for pneumatic actuation control of the Type 8023 GS3.

Documentation