Schubert & Salzer – Type 5050 Segmented Disc Manual

Overview

The Schubert & Salzer Type 5050 is a segmented disc manual control valve designed for the reliable throttling and shutoff of liquids and steam, including media contaminated by particulate matter. Its wafer-style, flangeless construction installs compactly between standard DIN EN 1092-1 Form B flanges, making it an efficient choice for space-constrained installations.

Built with a robust stainless steel or carbon steel body and a hand-operated rack-and-pinion mechanism, the Type 5050 delivers bi-directional sealing, low-noise operation, and high Cv values across a range of process conditions. Available in sizes from 1″ to 8″ with media temperatures up to 428°F, the Type 5050 is suitable for a wide variety of industrial process control applications.

Features & Benefits

• Handles particle-contaminated fluids — segmented disc design tolerates solids in the media stream without compromising sealing performance
• Bi-directional sealing — tight shutoff in both flow directions with leakage less than 0.001% of Kvs
• Wafer-type, space-saving construction — flangeless design installs between DIN EN 1092-1 Form B flanges, minimizing face-to-face installation length
• Quiet operation — segmented disc geometry reduces flow-induced noise compared to conventional butterfly or globe valves
• High Kvs values — provides strong flow capacity relative to valve size for efficient process control
• Sturdy handwheel with rack-and-pinion mechanism — robust manual actuation with reliable, repeatable positioning
• Broad temperature range — suitable for media from -76°F to 428°F depending on body material selection
• Optional ATEX certification — non-electrical explosion-proof version available for hazardous area classification II 2G / II 2D
• EU and UKCA Declarations of Conformity — meets European and UK pressure equipment requirements

Technical Specifications

• Sizes: 1″ to 8″ (DN 25 to DN 200)
• Max. allowable differential pressure: 25 bar (DN 25–DN 200)
• Pressure rating (1″–6″): 363 psi (PN 25 per DIN 2401); also compatible with PN 10–PN 16 flanges
• Pressure rating (8″): 232 psi (PN 16 per DIN 2401)
• Media temperature (stainless steel body): -76°F to 428°F (-60°C to +220°C)
• Media temperature (carbon steel body): 14°F to 428°F (-10°C to +220°C)
• Ambient temperature: -22°F to 212°F (-30°C to +100°C)
• Leakage: < 0.001% of Kvs
• Body materials: Stainless steel 316Ti / CF8M (1.4301 / 1.4408); Carbon steel A738
• Internal components: Stainless steel 1.4112 (rack, fixed plate, moving disc, slide ring); stainless steel 1.4310 (pressure spring)
• Connection: Wafer type, flanges per DIN EN 1092-1 Form B
• Actuation: Manual handwheel with rack-and-pinion drive
• Pressure equipment category: DN 25–DN 150 up to Category I (2014/68/EU); DN 200–DN 300 up to Category II
• Approvals: EU Declaration of Conformity; UKCA Declaration of Conformity; optional ATEX II 2G Ex h IIC T6…T1 X Gb / II 2D Ex h IIIC 85°C…530°C X Db

Applications

• Flow control of liquids, including water, process fluids, and slurries with particulate contamination
• Steam control in industrial heating and process systems
• Chemical processing where robust, low-maintenance shutoff and throttling is required
• Food & beverage processing (stainless steel body configurations)
• Pulp & paper industry — fiber-laden or contaminated media handling
• Textile and dyeing processes requiring precise manual flow adjustment
• Water treatment and wastewater systems
• Energy and utilities — steam and condensate circuit isolation
• Hazardous area installations where ATEX-certified non-electrical actuation is required

Type 5050 Accessories

Contact Schubert & Salzer for available accessories, including alternative slide ring materials (bronze), positioner-compatible body configurations, and special sealing options. Consult factory for project-specific requirements.

Documentation