MOOG G771K200A Servo Valve | MOOG Electrohydraulic Servo Valve

Description

PRODUCT OVERVIEW

MOOG G771K200A is an explosion-proof two-stage mechanical feedback servo valve belonging to MOOG classic G771K series. Adopting nozzle-flapper pilot stage plus dry torque motor structure, it converts electrical control signals into high-precision hydraulic flow output, serving as the core execution component of steam turbine DEH speed governing system. Featuring ultra-fast response speed, low hysteresis and high resolution, it stably adjusts the opening of turbine regulating valves to realize precise control of unit rotating speed and load. The explosion-proof structure adapts to hazardous working environments of thermal power plants, with strong anti-pollution and anti-vibration performance. Widely used for maintenance replacement and spare backup of thermal power generating units, gas turbine control systems and various high-precision hydraulic test benches.

TECHNICAL SPECIFICATIONS

COMMERCIAL PROCUREMENT PROTOCOL

1. System Compatibility Audit: Professional hydraulic and thermal control engineers verify your turbine model, DEH control cabinet firmware version and original valve performance parameters to realize zero-modification seamless replacement.
2. Graded volume discount mechanism: Provide targeted optimal unit price according to purchase quantity, synchronously update real-time inventory data and international logistics cost information.
3. Full set of export document service: Supply standardized complete export documents and unified HS code declaration plan to improve customs clearance efficiency for global power industry purchasers.
4. Issuance of stamped official commercial PI: Cooperate with the internal financial approval and capital payment workflow of power enterprises through formal stamped proforma invoice.
5. Standard cross-border settlement mode: Support standardized international trade payment represented by T/T telegraphic transfer.
6. Comprehensive pre-delivery performance verification: Each servo valve is subjected to continuous hydraulic aging test, full-flow characteristic calibration, dynamic response curve detection and internal leakage sealing test before delivery.
7. Standard anti-damage export packaging scheme: Vacuum anti-static sealed bag + customized high-density shockproof foam + thickened pressure-resistant export carton, avoiding precision valve core deformation and internal structural damage caused by collision and extrusion during cross-border long-distance transportation.
8. Authorized global logistics distribution: Cooperate with official operation channels of DHL, FedEx and UPS, and feed back real-time tracking number immediately after goods are delivered to logistics providers.

VISUAL PRODUCT SHOWCASE

1. Product Photo 1: Overall structural diagram of G771K200A servo valve, marking oil ports, wiring terminals and nameplate area

1. Product Photo 2: Internal structural layout of torque motor, nozzle baffle assembly and main spool assembly

1. Product Photo 3: Overall dimensional drawing for hydraulic manifold processing and installation positioning reference

MATCHING SUPPORTING SPARES & TECHNICAL DOCUMENTS

Turbine DEH control system host, integrated hydraulic manifold, high-pressure resistant seamless hydraulic pipeline, precision filter assembly, maintenance sealing kit, MOOG official characteristic test report, complete installation dimension drawing and standardized safety operation specification for servo valve disassembly & replacement

AFTER-SALES GUARANTEES

12-month warranty against inherent hardware defects under standard rated working conditions. All supplied valves are original genuine products (brand new original goods or disassembled second-hand products after full bench calibration testing), completely consistent with original factory flow characteristics and installation dimensions. We provide official datasheets, wiring instructions and on-site installation safety specifications by email. Free remote technical support covers valve commissioning, DEH system parameter matching and hydraulic system fault troubleshooting.

FAQ

What is the core function of MOOG G771K200A in thermal power units?It receives the valve position command issued by the DEH system, outputs corresponding hydraulic flow to drive the turbine actuator, controls the steam intake volume, and realizes stable regulation of generator rotating speed and active load.Will replacing the servo valve lead to changes in unit control parameters?Control parameters are stored in the DEH host system; hardware replacement will not modify system parameters, only simple zero drift calibration is required after installation.Are second-hand disassembled valves fully tested before delivery?All used servo valves pass full flow calibration, dynamic response detection and sealing pressure test strictly to meet factory technical indicators before delivery.Delivery time for in-stock goods?Goods are stored in domestic warehouse, all delivery procedures will be completed within 3 working days after payment confirmation.

Contact info

• WhatsApp: +86 13313703791
• Email: seren@ymgkplc.com
• Phone: +86 13313703791
• Wechat: +86 13313703791
• Website: www.xiongbaparts.com