Schubert & Salzer – Type 8011 GS3 Sliding Gate Pressure Regulator

Overview

The Schubert & Salzer Type 8011 GS3 is a compact self-operated sliding gate pressure regulator designed for high-accuracy pressure regulation of steam, liquids, and gases. Part of the GS3 sliding gate valve series, the Type 8011 features an entirely stainless steel construction — CF8M body and 316Ti actuator — making it exceptionally suited for aggressive environments including solvent vapor exposure, sea air, and caustic washdown conditions. Available in sizes 1/2″ to 6″ with wafer-type body design, the Type 8011 is rated to 145/580 psi and ANSI #150 and #300.

The compact spring enclosure design provides high accuracy of regulation across four selectable actuator pressure ranges from 4.4 to 145 psi. Both pressure reducing and back pressure control functions are available, and diaphragm material options include CR, EPDM, and FKM with optional PTFE foil. Media temperatures range from -22°F to +446°F, with special versions available on request. TA-Luft / ISO 15848-1 fugitive emissions compliance and CRN certification are standard approvals.

Features & Benefits

• Self-operated pressure regulator — requires no external power, signal, or instrument air for pressure regulation
• Entirely stainless steel construction: CF8M body and 316Ti actuator — ideal for aggressive environments with solvent vapors, sea air, or caustic washdown
• GS3 sliding gate operating principle delivers high accuracy of regulation for steam, liquids, and gases
• Compact spring enclosure design with four selectable actuator pressure ranges: 4.4–17 psi, 15–35 psi, 30–75 psi, and 60–145 psi
• Both pressure reducing and back pressure control functions available in a single valve design
• Diaphragm material options: CR, EPDM, or FKM — with optional PTFE foil for enhanced chemical resistance
• Wafer-type body installs between standard ANSI #150 or #300 flanges — minimal face-to-face length
• Available in sizes 1/2″ to 6″ rated to 145/580 psi and ANSI #150 and #300
• Media temperatures from -22°F to +446°F; special versions available on request for extended ranges
• Closed sealed spring cover with monitoring connection accessory available
• Optional ATEX non-electrical approval (II 2G Ex h IIB T6…T2 X Gb; II 2D Ex h IIIC 85°C…230°C X Db) for hazardous area installations
• CRN Certificate, TA-Luft / ISO 15848-1, EC and UKCA Declarations of Conformity available

Technical Specifications

• Size: 1/2″ – 6″
• Pressure: 145/580 psi; ANSI #150; ANSI #300
• Body material: Stainless steel CF8M
• Actuator material: Stainless steel 316Ti
• Diaphragm: CR, EPDM, or FKM (optional PTFE foil)
• Media temperature: -22°F to +446°F (special versions available on request)
• Actuator pressure ranges: 4.4–17 psi; 15–35 psi; 30–75 psi; 60–145 psi
• Connection: Wafer type (installs between flanges)
• Control functions: Pressure reducing; Back pressure control
• Media compatibility: Steam, liquids, gases
• ATEX (optional): II 2G Ex h IIB T6…T2 X Gb; II 2D Ex h IIIC 85°C…230°C X Db
• Approvals & Certificates: CRN Certificate, TA-Luft / ISO 15848-1, EC Declaration of Conformity, UKCA Declaration of Conformity

Applications

• High-accuracy pressure reducing regulation of steam in heating and process systems
• Back pressure control of gases and liquids in process piping
• Aggressive environment installations — solvent vapor, sea air, or caustic washdown service where all-stainless construction is required
• Self-operated pressure regulation where no instrument air or electrical power is available
• Low-emission process plants requiring TA-Luft / ISO 15848-1 fugitive emissions compliance
• Wafer-type installation in ANSI #150 or ANSI #300 flanged piping systems
• Hazardous area installations requiring ATEX non-electrical approval
• Applications requiring CRN certification for Canadian pressure vessel and piping compliance

Type 8011 GS3 Accessories

• Closed Sealed Spring Cover with Monitoring Connection – Sealed spring enclosure with integrated monitoring connection port for pressure monitoring at the spring chamber, suited for applications requiring leak detection or spring cavity venting.

Documentation