Schubert & Salzer – Type 7081 3/2-Way Valve – Stainless Steel

Overview

The Schubert & Salzer Type 7081 is a pneumatically operated 3/2-way (3-port, 2-position) valve manufactured in stainless steel CF8M (316 stainless), designed for high-cycle diverting and mixing service requiring higher pressure and temperature capability than the bronze Type 7080. Available in sizes 1/2″ to 2″ and rated to 580 psi, the Type 7081 handles gases, vapors, and fluids at media temperatures from -22°F to 392°F with extended application capability from -148°F to 428°F.

The Type 7081 offers distributing and mixing control functions in a single stainless steel body, with NPT and Whitworth pipe thread connections. Additional versions for low-temperature service and clean-process requirements are available, making the Type 7081 the high-performance stainless steel option for 3-way process switching applications.

Features & Benefits

• 3/2-way (3-port) design enables diverting (distributing) and mixing control functions in a single stainless steel valve body
• Stainless steel CF8M (316 stainless) construction for compatibility with aggressive media where bronze is not suitable
• High pressure rating of 580 psi — more than twice the 235 psi rating of the bronze Type 7080
• Wide media temperature range of -22°F to 392°F with extended application capability from -148°F to 428°F
• Available in sizes 1/2″ to 2″ with NPT and Whitworth pipe thread connections
• Pneumatically operated with choice of piston or stainless steel diaphragm actuator
• Actuator body options in brass (chrome plated), stainless steel, or polymer
• Different control functions available — distributing (diverting) and mixing configurations
• Optional ATEX non-electrical approval (II 2G Ex h IIC and II 2D Ex h IIIC) for hazardous area installations
• Special versions available: low temperature, degreased, silicone-free, and PTFE-free
• Accessories including limit switch, pilot valve, and manual override available from factory
• CRN Certificate, EC and UKCA Declarations of Conformity, and Safety Manual with SIL manufacturer’s declaration available

Technical Specifications

• Valve type: 3/2-way (3-port, 2-position)
• Size: 1/2″ – 2″
• Pressure: 580 psi
• Body material: Stainless steel CF8M (316 stainless)
• Media temperature: -22°F to 392°F
• Application temperature range: -148°F to 428°F
• Actuator types: Piston actuator (brass chrome plated, stainless steel, or polymer); Stainless steel diaphragm actuator
• Connection: NPT thread; Whitworth pipe thread
• Media compatibility: Gases, vapors, fluids
• Control functions: Distributing (diverting); Mixing
• ATEX (optional): II 2G Ex h IIC T6…T2 X Gb; II 2D Ex h IIIC 85°C…220°C X Db
• Approvals & Certificates: CRN Certificate, EC Declaration of Conformity, UKCA Declaration of Conformity, Safety Manual with SIL manufacturer’s declaration

Applications

• Flow diverting — switching aggressive or high-pressure process flow between two outlet paths in high-cycle service
• Flow mixing — combining two inlet streams into a single outlet in stainless steel piping systems
• High-pressure 3-way switching where the 235 psi bronze Type 7080 is insufficient
• Aggressive media service requiring stainless steel body construction over bronze
• Low-temperature process applications (low-temperature version available)
• Clean-service applications requiring degreased, silicone-free, or PTFE-free construction
• Chemical, petrochemical, and industrial process plants handling gases, vapors, and fluids
• Hazardous area installations requiring ATEX non-electrical approval
• Applications requiring CRN certification for Canadian pressure vessel and piping compliance
• Applications requiring SIL compliance

Type 7081 Accessories

• Limit Switch – Position feedback accessory providing position status signal for process monitoring and control integration.
• Pilot Valve – Solenoid pilot valve for pneumatic actuation control of the Type 7081 3/2-way valve.
• Manual Override – Allows manual operation of the valve independent of pneumatic supply for maintenance or emergency use.

Documentation