Schubert & Salzer – Type 7031 Angle Seat Flange Valve

Overview

The Schubert & Salzer Type 7031 is the flanged version of the Type 7010 angle seat valve, offering the same pneumatic operation, stainless steel CF8M construction, and performance characteristics with the addition of flange end connections for easy installation into flanged piping systems. Available in sizes 1/2″ to 3″, the Type 7031 supports ANSI #150, ANSI #300, and DIN EN 1092-1 flange standards, making it suitable for both US and international process installations.

Rated to 580 psi with media temperatures from -22°F to 392°F and application capability down to -148°F, the Type 7031 handles gases, vapors, and fluids across a broad range of industrial conditions. Optional ATEX non-electrical approval, low-temperature, pressure-balanced, and clean-service versions are available to meet specialized application requirements.

Features & Benefits

• Flanged angle seat valve design provides direct drop-in installation into ANSI or DIN flanged piping systems without adapter fittings
• Supports ANSI #150, ANSI #300, and DIN EN 1092-1 flange standards for broad application compatibility
• Stainless steel CF8M body construction for resistance to a wide range of aggressive media
• Available in sizes 1/2″ to 3″ — wider range than the 7030 ductile iron flange valve
• High pressure rating of 580 psi with media temperatures from -22°F to 392°F
• Extended application temperature range of -148°F to 428°F for low-temperature and cryogenic service
• Pneumatically operated with choice of piston or stainless steel diaphragm actuator
• Actuator body options in brass (chrome plated), stainless steel, or polymer
• 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, pressure balanced, 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

• Size: 1/2″ – 3″
• Pressure: 580 psi; ANSI #150; ANSI #300
• Body material: Stainless steel CF8M
• 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: Flange per DIN EN 1092-1; Flange per ANSI #150; Flange per ANSI #300
• Media compatibility: Gases, vapors, fluids
• 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

• On/off isolation in flanged process piping systems using ANSI 150, ANSI 300, or DIN flange standards
• Retrofit and replacement installations where flanged end connections are required
• Steam, gas, and fluid control in chemical, petrochemical, and industrial process plants
• Low-temperature and cryogenic service (low-temperature version available)
• High-cycle pneumatic switching in aggressive media service
• Hazardous area installations requiring ATEX non-electrical approval
• Applications requiring CRN certification for Canadian pressure vessel and piping compliance
• Applications requiring SIL compliance

Type 7031 Accessories

• Limit Switch – Position feedback accessory providing open/close status signal for process monitoring and control integration.
• Pilot Valve – Solenoid pilot valve for pneumatic actuation control of the Type 7031 angle seat flange valve.
• Manual Override – Allows manual operation of the valve independent of pneumatic supply for maintenance or emergency use.

Documentation