Schubert & Salzer – Type 4037 Ex-Motorized Ball Sector Valve

Overview

The Schubert & Salzer Type 4037 is an Ex-certified motorized ball sector valve designed for on/off and modulating control of fluids, suspensions, and gases — including contaminated, abrasive, and viscous media — in potentially explosive atmospheres. Available in 1″ through 4″ nominal sizes, the Type 4037 combines a robust stainless steel valve body with an integrated brushless DC actuator certified to ATEX and IECEx standards for use in Zone 1, 2, 21, and 22 classified areas.

The valve features near-equal percentage control characteristics with a rangeability of 100:1, adjustable stroking times, universal voltage supply (24–230 V AC/DC), and an IP66-rated enclosure. An integrated heating system and optional spring return function extend its suitability for demanding industrial environments where reliability and low maintenance are critical.

Features & Benefits

• ATEX and IECEx Ex-certified actuator — rated II 2G Ex db [ib Gb] IIC T6/T5/T4 Gb (gas) and II 2D Ex tb [ib Db] IIIC T80°C/T95°C/T130°C Db (dust), suitable for Zone 1, 2, 21, and 22 hazardous areas
• Universal voltage supply — accepts 24–230 V AC/DC, simplifying integration across global installations
• Adjustable stroking times — field-selectable via rotary switch for precise process tuning without additional hardware
• Brushless DC motor — maintenance-free actuator design reduces scheduled service intervals and downtime
• Integrated heating system — ensures reliable operation at ambient temperatures down to -40°F
• IP66 protection class — sealed enclosure protects actuator electronics from dust ingress and water jets
• Manual emergency adjustment — allows valve repositioning without power in the event of actuator failure
• Spring return function available on request — ensures defined fail-safe position on loss of power
• Easily exchangeable seat ring — reduces maintenance time; PTFE, PEEK, and Stellite seat ring options available
• Near equal percentage flow characteristic with 100:1 rangeability — delivers accurate modulating control across a wide flow range
• TA Luft / ISO 15848-1 compliant shaft sealing — low-emission packing meets stringent fugitive emission standards
• Wafer-type (flangeless) body — compact, lightweight installation between standard ANSI 150 or ANSI 300 flanges
• Optional face-to-face dimension per ANSI ISA 75.08.02 — facilitates direct replacement of existing control valves

Technical Specifications

• Nominal sizes: 1″ – 4″
• Connection: Wafer type (flangeless), compatible with ANSI 150 and ANSI 300 flanges
• Body material: Cast parts CF8M (316L stainless steel); turned parts 316L (1.4404)
• Bearing material: High-temperature plain bearing (Iglidur Z)
• Nominal pressure: 1″–2″: up to 580 psi (ANSI 150 / ANSI 300); 2½”–4″: up to 365 psi (ANSI 150 / ANSI 300)
• Fluid temperature: -40°F to +428°F, depending on seat ring and sealing selection
• Ambient temperature: -40°F to +122°F (T6 rating); -40°F to +104°F (T5 rating)
• Vacuum: Up to 1.48 in Hg
• Flow characteristic: Near equal percentage
• Rangeability: 100:1
• Seat leakage class: IEC 60534-4 Class IV-S1 (PTFE and PEEK seat rings)
• Shaft/body sealing: ISO 15848-1 compliant — TA Luft / ISO FE-BH-CC3-SSA0-t(-40°C/+220°C)-PN40
• Voltage supply: 24–230 V AC/DC (universal)
• Input signal: 4–20 mA or 0–10 V DC
• Feedback signal: 4–20 mA or 0–10 V DC
• Motor type: Brushless DC
• Holding power: 20 W (~16 W with heating active)
• Enclosure protection: IP66
• Ex certification (gas): II 2G Ex db [ib Gb] IIC T6, T5, T4 Gb (Zone 1 & 2); II 3G Ex nC II T6 / II 3(1)G Ex nC [ia] IIC T6 (Zone 2)
• Ex certification (dust): II 2D Ex tb [ib Db] IIIC T80°C, T95°C, T130°C Db (Zone 21 & 22); II 3D Ex tD A22 IP66 T80°C (Zone 22)
• Approvals & declarations: ATEX, IECEx, TA Luft, ISO 15848-1, EC Declaration of Conformity, UKCA Declaration of Conformity
• Seat ring options: PTFE, PEEK, Stellite
• Sealing options: Viton, EPDM, NBR, FFKM, PFA-Silicone
• Cvs values (100% open): 1″ = 29 | 1½” = 80.9 | 2″ = 126 | 2½” = 220.4 | 3″ = 347 | 4″ = 451
• Actuator torque (1″–2″): 15 Nm or 30 Nm (rotary switch selectable)
• Actuator torque (3″–4″): 50 Nm or 75 Nm (rotary switch selectable)
• Stroking times (1″–2″): 3/7.5 sec to 120 sec per 90° (10 settings)
• Stroking times (3″–4″): 40 sec to 150 sec per 90° (10 settings)

Applications

• On/off and modulating control of fluids, suspensions, and gases in ATEX/IECEx Zone 1, 2, 21, and 22 classified areas
• Contaminated, abrasive, viscous, and pasty media handling in chemical and petrochemical processes
• Tire, rubber, and plastics manufacturing where volatile or explosive atmospheres may be present
• Chemical industry processes requiring certified Ex-proof actuation and low fugitive emissions
• Energy and hydrogen production facilities with hazardous area classifications
• Pharmaceutical and cosmetics processing in solvent-rich or explosion-risk environments
• Pulp and paper operations handling aggressive or flammable media
• Water treatment and industrial utility systems requiring robust, low-maintenance automated valves
• OEM equipment integration requiring universal voltage compatibility and compact wafer-body design

Type 4037 Accessories

• Limit Switch – End-position feedback for open/closed status indication and interlock signaling
• Position Feedback Transmitter – Continuous 4–20 mA or 0–10 V output for valve position monitoring

Documentation