KITZ SCT Pneumatic Valve Modules: P11104128 TD4CB-GC-1003-FA-SEP-316LE 469205 FBSDV-6.35-2B3-BGC#A 5252156-A 302156 2302037

Technical Dossier

Product Details And Specifications

KITZ SCT Series: Comprehensive Module Range and Technical Overview

The KITZ SCT series represents one of the most widely deployed pneumatic valve product lines in global heavy industry. Installed across petrochemical complexes, nuclear power stations, LNG terminals, offshore platforms, and crude oil refineries, SCT-series actuated ball valves and butterfly valves are specified by engineering contractors and plant operators who require long-cycle reliability under high-pressure, high-temperature, and corrosive-media conditions. KITZ Corporation, headquartered in Nagano, Japan, has supplied SCT-series components to EPC projects across Asia-Pacific, the Middle East, and Europe since the 1980s. The series covers a body material range from carbon steel (WCB) through stainless steel (316, 316L, 316LE) to duplex and super-duplex alloys, accommodating ANSI Class 150 through Class 2500 pressure ratings. Actuator sub-assemblies — including scotch-yoke pneumatic actuators, spring-return fail-safe mechanisms, and double-acting cylinders — are integrated at the factory and shipped as complete valve-actuator assemblies (IGS: Instrument-Grade Sub-assembly). The SCT designation specifically identifies the scotch-yoke actuator topology, which converts linear pneumatic force into rotary torque output for quarter-turn valve operation.

The Evolution of SCT Architecture

The SCT actuator architecture was introduced by KITZ in the early 1980s as a response to demand from Japanese petrochemical operators for a standardized, field-repairable pneumatic actuator compatible with the company's existing flanged ball valve bodies. The first-generation SCT units used cast iron yoke housings and required manual spring pre-compression during field assembly — a maintenance liability that was eliminated in the second-generation design (circa 1995) through the introduction of a cartridge-style spring pack. Third-generation SCT assemblies, produced from approximately 2005 onward, incorporated ISO 5211 direct-mount flanges, enabling interchangeability with positioners and solenoid valve manifolds from third-party instrument suppliers (Rotork, Biffi, Emerson). The current production SCT line supports NAMUR interface mounting for solenoid valves and limit switches, and is compatible with HART-enabled smart positioners. Legacy first- and second-generation SCT units remain in service at many brownfield sites; spare parts for these variants are no longer manufactured by KITZ but remain available through authorized aftermarket distributors. The specific assembly documented on this page — P11104128 TD4CB-GC-1003-FA-SEP-316LE 469205 FBSDV-6.35-2B3-BGC#A 5252156-A, 302156 2302037 — is a factory-configured IGS (Instrument-Grade Sub-assembly) combining a 316LE stainless steel ball valve body with a TD4CB scotch-yoke actuator, spring-return fail-safe, and a FBSDV-6.35-2B3-BGC#A solenoid valve block. This configuration is typical of safety-instrumented system (SIS) applications where fail-closed or fail-open behavior is mandated by IEC 61511.

SCT Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the KITZ SCT pneumatic valve and actuator ecosystem. Each entry reflects a distinct configuration of body material, actuator size, end connection, or accessory package.

P11104128 TD4CB-GC-1003-FA-SEP-316LE 469205 FBSDV-6.35-2B3-BGC#A 5252156-A, 302156 2302037: 316LE ball valve, TD4CB scotch-yoke actuator, spring-return, FBSDV solenoid block, IGS assembly — SIS-grade fail-safe service.

KITZ SCT-065-WCB-TD4CB-DA: DN65 carbon steel ball valve with TD4CB double-acting scotch-yoke actuator, ANSI Class 150, standard process service.

KITZ SCT-050-316-TD2CB-SR-FA: DN50 316 SS ball valve, TD2CB actuator, spring-return fail-open, suitable for corrosive fluid isolation.

KITZ SCT-080-316L-TD6CB-DA-HART: DN80 316L SS ball valve, TD6CB actuator, double-acting, HART positioner interface, process control loop service.

KITZ SCT-100-WCB-TD8CB-SR-FC: DN100 WCB ball valve, TD8CB actuator, spring-return fail-closed, high-cycle on/off service.

KITZ SCT-040-316LE-TD2CB-SR-FC-SIS: DN40 316LE ball valve, TD2CB actuator, spring-return fail-closed, SIL 2 rated, safety instrumented system service.

KITZ SCT-150-WCB-TD12CB-DA: DN150 WCB ball valve, TD12CB large-bore actuator, double-acting, pipeline isolation service.

KITZ SCT-025-316-TD1CB-SR-FA: DN25 316 SS ball valve, TD1CB compact actuator, spring-return fail-open, instrument air service.

KITZ SCT-200-WCB-TD16CB-DA-ESD: DN200 WCB ball valve, TD16CB actuator, double-acting, emergency shutdown (ESD) duty, offshore platform service.

KITZ SCT-065-DUPLEX-TD4CB-SR-FC: DN65 duplex stainless steel ball valve, TD4CB actuator, spring-return fail-closed, seawater and chloride-bearing media service.

KITZ SCT-032-316L-TD2CB-DA-NAMUR: DN32 316L SS ball valve, TD2CB actuator, double-acting, NAMUR solenoid interface, DCS-integrated control service.

KITZ SCT-080-WCB-TD6CB-SR-FC-ATEX: DN80 WCB ball valve, TD6CB actuator, spring-return fail-closed, ATEX Zone 1 certified, hazardous area service.

KITZ SCT-050-316LE-TD4CB-SR-FC-SIS: DN50 316LE ball valve, TD4CB actuator, spring-return fail-closed, SIL 2 rated, chemical injection service.

KITZ SCT-100-316-TD8CB-DA-SMART: DN100 316 SS ball valve, TD8CB actuator, double-acting, smart positioner (4–20 mA), modulating control service.

KITZ SCT-125-WCB-TD10CB-SR-FC: DN125 WCB ball valve, TD10CB actuator, spring-return fail-closed, high-pressure gas isolation service.

KITZ SCT-015-316-TD1CB-SR-FA-MINI: DN15 316 SS ball valve, TD1CB miniature actuator, spring-return fail-open, analyzer sample system service.

KITZ SCT-250-WCB-TD20CB-DA-ESD: DN250 WCB ball valve, TD20CB actuator, double-acting, ESD duty, large-bore pipeline service.

Sourcing Hard-to-Find & Obsolete SCT Parts

DriveKNMS maintains a dedicated inventory program for KITZ SCT assemblies and sub-components that have been discontinued from the standard KITZ production schedule. This includes first- and second-generation scotch-yoke yoke housings, legacy spring pack cartridges, obsolete seal kits for TD1CB through TD6CB actuators, and factory-configured IGS assemblies built to original project-specific bill-of-materials (BOM) specifications. When a plant operator requires an exact replacement for an installed SCT assembly — including the specific solenoid valve block, limit switch, and positioner combination originally supplied — DriveKNMS sources from a network of authorized surplus distributors and performs a full functional verification before shipment. Tag numbers, P&ID references, and original purchase order numbers can be used to cross-reference the correct replacement configuration. For assemblies where the original actuator size is no longer available, DriveKNMS provides engineering-reviewed actuator upgrade recommendations that maintain the original valve body and end connections, minimizing re-piping scope. Lead times for obsolete SCT configurations are typically 4–12 weeks depending on configuration complexity.

Quality Control for the SCT Range

Each KITZ SCT assembly processed by DriveKNMS undergoes a structured inspection and functional test protocol before dispatch. Valve body inspection covers seat leakage testing to API 598 or ISO 5208 Grade A/D as specified, body-to-end hydrostatic shell testing, and dimensional verification of end connections (ANSI flanged, butt-weld, or socket-weld). Actuator testing covers spring pre-compression verification, breakout torque measurement at minimum and maximum supply pressure, and end-of-travel mechanical stop adjustment. For IGS assemblies incorporating solenoid valve blocks (such as the FBSDV-6.35-2B3-BGC#A fitted to the P11104128 assembly), solenoid coil continuity, de-energize-to-trip response time, and manual override function are verified. Limit switch calibration is confirmed against the valve's open and closed mechanical positions. All test records are documented and supplied with the shipment. For SIS-duty assemblies, partial stroke test (PST) capability is verified where the positioner or solenoid block supports it.