1. Core Overview & Target Application Brief

This specialized electrical components catalog is precision engineered exclusively for GE 90SR gas turbines, 65FP fuel turbines, and GE MARK VI turbine control systems — the industry-leading power generation and industrial turbine packages deployed in power plants, oil and gas processing facilities, and critical industrial energy operations. Tailored to the specialized needs of turbine maintenance engineers, control system technicians, power plant reliability managers, oil and gas facility supervisors, and industrial maintenance crews, this parts suite directly addresses the most costly and disruptive field pain points: turbine control signal drift, solenoid valve failure, limit switch malfunction, pressure/temperature sensor inaccuracies, and unplanned turbine shutdowns caused by faulty electrical and electropneumatic components.

2. Detailed Product & Component Specifications

The GE turbine electrical parts line features heavy-duty, industrial-grade control and sensing components built to withstand extreme temperature fluctuations, vibration, and hazardous industrial environments. Each part — spanning servo valves, solenoid valves, limit switches, pressure switches, thermocouples, electropneumatic transducers, MARK VI rack power supplies, and high-precision oil filter cartridges — is crafted from premium materials: corrosion-resistant alloy for valve bodies, high-temperature insulation for electrical components, industrial-grade filter media (3-micron Beta rating), and ATEX-certified enclosures for hazardous location operation. All critical control components are calibrated to GE OEM signal accuracy (±0.1% full scale), ensuring direct interchangeability with original GE turbine and MARK VI control hardware without modification.

2.2 Key Functional Specifications

• Control Precision: GE servo valves (312A6077P series) deliver 0.01-second response time for fuel/gas flow regulation, maintaining turbine speed stability within ±0.5% of setpoint.
• Component Durability: 3-micron high-pressure oil filter cartridges (328A7168P001) provide 8,000 hours of contaminant removal; thermocouples (328A8630P002) operate reliably up to 550°C for bearing temperature monitoring.
• Safety & Compliance: ATEX-rated actuators and limit switches meet Class 1 Division 2 hazardous area requirements, suitable for gas and fuel-handling turbine environments.

2.3 Structural Design Features

• OEM Direct Interchangeability: Every part fits original GE 90SR/65FP turbine and MARK VI control system mounting and wiring specifications, cutting repair and installation time by up to 50% in critical power facilities.
• Plug-and-Play Control Components: Pre-calibrated solenoid valves, transducers, and power supplies simplify replacement, reducing calibration time and technical errors.

2.4 Applicable Operating Conditions

These GE electrical components are optimized for reliable performance across core turbine and power generation scenarios, including:

• GE 90SR gas turbine and 65FP fuel turbine control and auxiliary systems
• GE MARK VI turbine control rack and monitoring systems
• Power generation plants, oil/gas processing facilities, and industrial energy hubs
• ATEX-certified hazardous gas/fuel handling areas
• Continuous turbine operation and cyclic start-stop cycles
• Harsh industrial environments with high vibration, temperature extremes, and airborne contaminants

2.5 Proactive Maintenance & Service Recommendations

To maximize the lifespan of GE turbine and MARK VI control systems and avoid costly unplanned shutdowns, follow these industry-approved maintenance protocols using this parts catalog:

• 3-Month Inspection: Test limit switch actuation, check solenoid valve response time, inspect electrical connections for corrosion, and verify pressure switch setpoints.
• 6-Month Service: Replace 3-micron oil filter cartridges, calibrate electropneumatic transducers, clean thermocouple sensing tips, and test MARK VI power supply output stability.
• 24-Month Overhaul: Replace worn servo valves, solenoid valves, and limit switches; swap aging thermocouples and pressure switches; perform full control system calibration.

We supply the following spare parts:

Item	Désignation	Part Number GE	Unité
1	Vanne de régulation de débit d’eau de	172A5470P001	P
2	Servo- Valve Arrêt & Régulation Gaz P/ Turbine 90 SR	312A6077P004	P
3	Servo- Valve By-Pass Ppe. à Fuel P/ Turbine 65 FP	312A6077P005	P
4	Vanne d’air de balayage du circuit de combustible	VA13-1	P
5	Vanne de transfert d’alimentation du circuit	VA14-1	P
6	Electrovanne de commande de la VA19-1 (20PLP-1 20PLP-2)	258A4728P001	P
7	Electrovanne système déclenchement des aubes variables entrée compresseur (IGV)	381A7014P029	P
8	Bloc séquenceur pour vireur hydraulique	154A3247G001	P
9	Electrovanne commande vanne anti-pompage 20CB-1	381A7457P001	P
10	Electrovanne air atomisation pour la commande de VA18-1 20AA-1	381A7163P002	P
11	Fin de course 3 voix (5 & 11 -ème étage) pour	10Q36191F012	P
12	Fin de course clapet anti-retour de la ventilation du compartiment TG	Model :BERNSTEIN D-32457	P
13	Fin de course vanne anti-pompage (11ème étage) 33CB-1	381A7012P103 Model : CROUZET ( SP 3969-10)	P
14	Actionneur fin de course embrayage dents de loup	205B3031P001	P
15	Fin de course porte du compartiment auxiliaire 33DT	Model :BERNSTEIN D-32457	P
16	Détecteur de niveau 71FF-1	3816654P001	P
17	Transducteur électropneumatique IBH 65EP-3 Contrôle	372A8942P001	P
18	Indicateur de niveau magnétique & contact de niveau	Model : NBK-M2-N20 P-0-1 + NBK RT	P
19	Alimentation rack / POWER SUPPLY/MARK VI/WITH-	IS2020RKPSG2A	P
	ENSEMBLE VERIN, ATEX /Ensemble actionneur système aubes variables entrée compresseur	91201796G011	P
20	Manostat de pression basse alimentation huile HP 63HQ-1	328A7398P005	P
21	Manostat Pression Huile De Graissage 63QA-2	328A7398P002	P
22	VANNE REGULATION VPR-2	156A1413P054	P
23	CARTOUCHE FILTRE HUILE HP BETA 3 MICRONS	328A7168P001	P
24	ACCOUPLEMENT DE LIAISON	302A1893P001	P
25	Vanne thermostatique régulant la température de	91600542P001	P
26	THERMOCOUPLE T.METAL INSTRUM.TCS PALIER 2	328A8630P002	P
27	Tensionneur pour pompe hydraulique manuelle RiverHawk MP-0130	HT-1466	P
28	Tensionneur pour pompe hydraulique manuelle RiverHawk MP-0130	HT-0406	P

Item	Désignation	Part Number GE	Unité
1	Vanne de régulation de débit d’eau de	172A5470P001	P
2	Servo- Valve Arrêt & Régulation Gaz P/ Turbine 90 SR	312A6077P004	P
3	Servo- Valve By-Pass Ppe. à Fuel P/ Turbine 65 FP	312A6077P005	P
4	Vanne d’air de balayage du circuit de combustible	VA13-1	P
5	Vanne de transfert d’alimentation du circuit	VA14-1	P
6	Electrovanne de commande de la VA19-1 (20PLP-1 20PLP-2)	258A4728P001	P
7	Electrovanne système déclenchement des aubes variables entrée compresseur (IGV)	381A7014P029	P
8	Bloc séquenceur pour vireur hydraulique	154A3247G001	P
9	Electrovanne commande vanne anti-pompage 20CB-1	381A7457P001	P
10	Electrovanne air atomisation pour la commande de VA18-1 20AA-1	381A7163P002	P
11	Fin de course 3 voix (5 & 11 -ème étage) pour	10Q36191F012	P
12	Fin de course clapet anti-retour de la ventilation du compartiment TG	Model :BERNSTEIN D-32457	P
13	Fin de course vanne anti-pompage (11ème étage) 33CB-1	381A7012P103 Model : CROUZET ( SP 3969-10)	P
14	Actionneur fin de course embrayage dents de loup	205B3031P001	P
15	Fin de course porte du compartiment auxiliaire 33DT	Model :BERNSTEIN D-32457	P
16	Détecteur de niveau 71FF-1	3816654P001	P
17	Transducteur électropneumatique IBH 65EP-3 Contrôle	372A8942P001	P
18	Indicateur de niveau magnétique & contact de niveau	Model : NBK-M2-N20 P-0-1 + NBK RT	P
19	Alimentation rack / POWER SUPPLY/MARK VI/WITH-	IS2020RKPSG2A	P
	ENSEMBLE VERIN, ATEX /Ensemble actionneur système aubes variables entrée compresseur	91201796G011	P
20	Manostat de pression basse alimentation huile HP 63HQ-1	328A7398P005	P
21	Manostat Pression Huile De Graissage 63QA-2	328A7398P002	P
22	VANNE REGULATION VPR-2	156A1413P054	P
23	CARTOUCHE FILTRE HUILE HP BETA 3 MICRONS	328A7168P001	P
24	ACCOUPLEMENT DE LIAISON	302A1893P001	P
25	Vanne thermostatique régulant la température de	91600542P001	P
26	THERMOCOUPLE T.METAL INSTRUM.TCS PALIER 2	328A8630P002	P
27	Tensionneur pour pompe hydraulique manuelle RiverHawk MP-0130	HT-1466	P
28	Tensionneur pour pompe hydraulique manuelle RiverHawk MP-0130	HT-0406	P

3. Field Fault Repair Cases (Real-World Scenarios)

3.1 Case 1: Turbine Fuel Servo Valve Failure (Power Plant)

Issue: GE 65FP fuel turbine experienced unstable fuel flow and frequent speed fluctuations, triggering partial load reduction. Root cause: Worn fuel bypass servo valve (312A6077P005) with internal seal degradation. Repair: Replaced the faulty servo valve, performed flow calibration, and verified system pressure. Outcome: Restored stable fuel delivery, eliminated speed drift, and resumed full turbine load operation.

3.2 Case 2: MARK VI Control System Power Supply Failure

Issue: GE MARK VI control rack lost power, causing complete turbine control signal loss and automatic shutdown. Root cause: Failed rack power supply (IS2020RKPSG2A) with internal circuit burnout. Repair: Installed a new OEM power supply, reset control parameters, and performed system boot-up. Outcome: Restored control system power, resumed turbine operation, and prevented extended downtime.

3.3 Case 3: Turbine Bearing Temperature Thermocouple Malfunction

Issue: False high-temperature alarm triggered on GE 90SR turbine bearing, leading to unnecessary shutdown. Root cause: Degraded thermocouple (328A8630P002) with inaccurate temperature sensing. Repair: Replaced the faulty thermocouple, calibrated temperature readings, and cleared alarm faults. Outcome: Eliminated false alarms, restored accurate bearing monitoring, and avoided future unplanned shutdowns.

4. Frequently Asked Questions (FAQ)

Question	Answer
Are these parts compatible only with GE 90SR/65FP turbines and MARK VI systems?	Yes, all components are engineered exclusively for GE 90SR gas turbines, 65FP fuel turbines, and MARK VI control racks; they are calibrated to GE OEM specs and not interchangeable with other turbine models.
Do these parts include critical components for MARK VI control system repairs?	Absolutely, this catalog includes rack power supplies, transducers, and sensors required to repair and calibrate GE MARK VI turbine control systems.
How do I confirm the correct servo valve part number for my GE turbine?	Match the valve application (gas stop/fuel bypass) and turbine model (90SR/65FP) to the catalog listings; use the exact GE part number (312A6077P series) for guaranteed fit and function.

5. Procurement Guidance & Call to Action

This GE turbine electrical parts list serves as a dual-purpose industry resource: a strict procurement standard to guarantee part quality, calibration accuracy, and compliance with ATEX, API, and GE OEM standards, and a practical technical reference to resolve control system failures quickly and safely. Choosing these OEM-equivalent replacement parts minimizes unplanned turbine downtime, reduces long-term maintenance expenses, and preserves the reliable performance of your GE 90SR/65FP turbines and MARK VI control systems.