G771K201A High End Gas Turbine Governors Controller Hydraulic DDV Servo Valve

• Temperature: Ordinary Temperature
• Certification: ISO9001
• Media: Oil
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: G771K201A
• Standard: Standard
• Connection Mode: Electrical Plug
• Power: Hydraulic
• Material: Stainless Steel
• Type: Self-Operated
• Industry: Power Plants
• Condition: Brand New
• Valve Parts: Solenoid Valve Spool
• Usuage: Steam Turbine
• System: Deh System
• Servo Valve for Gas Turbine: 761K4112
• Servovalve Hydraulic: G771K202A
• Servo: G771K208
• Proportional Valve: G772K240A
• Electro Hydraulic Servo Valve: 761K4112b
• Direct-Operated Servo Valves: 761K4122
• Rsv Servo Valve: G772K620A
• Transport Package: Cartons
• Specification: G771 series
• Trademark: Customized
• Origin: China
• Production Capacity: 10000 Pieces/Year
• Package Size: 50.00cm * 30.00cm * 20.00cm
• Package Gross Weight: 10.000kg

Product Description

 

Product Description

In the gas turbine control system, the servo valve G771K201A plays a crucial role, mainly used to transmit hydraulic signals, control the actions of pneumatic actuators, and adjust the load capacity and rotation speed of the turbine to achieve precise control of the operation of the gas turbine. Servo valve G771K201A is applied in hydraulic automatic control systems, pneumatic automatic control systems, flow control systems, etc.

Working Principle:
The electrical control system receives instructions from the gas turbine control system and calculates the required valve opening. The driving device drives the spool of the servo valve G771K201A through mechanical connection according to the instructions of the electrical control system. When the valve core moves, the fluid channel in the valve chamber changes accordingly, thereby controlling the opening of the gas turbine valve.

Function:
Servo valve G771K201A adjusts the valve opening according to the load demand of the gas turbine. By precisely controlling the gas flow rate, the gas turbine can operate in an efficient range, reduce energy consumption, and improve overall operating efficiency. Servo valves can be combined with control systems to achieve automatic control of gas turbines, improving operational stability and safety.

Product Parameters

 

Technical Specification of Servo Valve for Reference
Valve Type	Electro hydraulic servo valve
Connection	Aviation plug
Material	Stainless steel
Maximum Rated Flow	76l/min
Maximum Total Null Leakage	2l/min
Maximum Pilot Flow	0.35l/min
Maximum Supply Pressure	210bar
Minimum Supply Pressure	14bar
Proof Pressure	150% At Supply Port
Burst Pressure Return Port Open	250%
Maximum Operating Temperature	135°C
Hysteresis Around Null	≤3%
Symmetry Error	<10%
Linearity Error	<10%
Threshold	≤0.5%
Condition	Brand-New
After-service	Cleaning and testing

 

Detailed Photos

Product Features:

1. Stability
Servo valves need to operate frequently in harsh environments such as high temperature, high pressure, and vibration, so high stability is one of the key performance indicators that they must meet. Stability includes operating temperature range, vibration resistance, long-term stability, and reliability.

2. Accuracy
Due to the direct impact of servo valves on the operational performance of gas turbines, their precision requirements are very high, and they can achieve small adjustments to ensure accurate and stable output power and speed of the gas turbine.

3. Service life
The service life of servo valves directly affects the operating cost and maintenance cycle of gas turbines. Therefore, excellent servo valves should have an ultra long design life and be able to operate stably for many years under high loads.
 

Applications of Servo Valve:

1. Adjust the thickness of the bearing oil film:
During the operation of a gas turbine, the thickness of the bearing oil film directly affects the bearing life and the operational performance of the gas turbine, such as vibration and noise. The servo valve can ensure the normal working state of the bearings by adjusting the oil film thickness, improving the reliability and troubleshooting ability of the gas turbine.

2. Control turbine blade angle:
The angle of the turbine blades directly affects the driving capacity and efficiency of the gas turbine. The servo valve can precisely adjust the blade angle, control the output power and operating efficiency of the gas turbine by controlling the hydraulic signal.

 

Related Products

Yoyik offers different types of Hydraulic solenoid valves for industrial users:

solenoid valve G761-3033B
SERVO VALVE D631-195 CP 20
servo valve SV4-20(15)57-80/40-10-S451
Electro-hydraulic servo valve BD15AAANB10
SERVO MOTOR G403-517A
HYDRAULIC SERVO PROPORTIONAL VALVE D664-4798
servo valve G771/K615A
servo valve 761K4122B
Electro-hydraulic servo valve BD15AAA-NB10
servo valve G761-3605B
SERVO MOTOR G403-546A
servo valve 72559A
RCV servo valve 72A-560
SERVO MOTOR G423-824A
DEH system servo valve 563JOGA4VPL
SOLENOID VALVE FOR GOVERNING VALVE G761-3033B
 

Packaging & Shipping

          Standard & solid packaging ensures your goods safety.

          Various professional packages at your choice


         Multiple choice of reliable and cost-effective shipping methods available.

 

Company Profile

- ABOUT US -

Dongfang Yoyik Engineering Co., Ltd is located in Deyang, Sichuan, China's heavy equipment base, was founded in 2004. The company is a professional power plant spare parts manufacturer and supplier. Our products are applicable for many thermal power plants, hydropower plants, metallurgic industrial power plant, cement plant power house, aluminum plant power house, and coal mill power plants.

From advanced precision electric elements and components to highly-customized metal items, you can find all the needed for a power plant from Yoyik.


Yoyik is the exclusive agent of W.M. Nugent CO Inc for selling Nugent filter elements and filtration system products in China. The company also has great advantages in of many hydraulic products, including pumps, valves, sealing materials, etc. the brands include Eaton, Vickers, Moog, star, copaltite, temp-tite, 707, etc.

 

Our Advantages

 

- TECHNICAL PATENTS -

 

- OUR ADVANTAGE -

- COOPERATIVE INDUSTRIES -

Yoyik offers wide range of spare parts for customers in different industries:
 

FAQ

- ORDER NOTES -

√ Model Selection
Before purchasing, please ensure that the model specifications you provide are complete or that the drawings have been drawn so that you can provide timely and accurate quotations.

√ Quality Assurance
We promise to provide high-quality products and after-sales service. If there are any quality issues, please contact us promptly.

√ Secure Transactions
We sell on MIC, provide a secure and reliable trading environment, and accept multiple payment methods to facilitate your purchase.

 

- FAQ -

- Are you trading company or manufacturer?
We are factory located in Deyang, China.

- How long is your delivery time?
Generally it is 2-5 days if the goods are in stock. Or it is 7-21 days if the goods are not in stock, it is according to quantity.

- Do you provide samples? Is it free or extra?
Sorry we do not offer samples.

- What price terms do you accept?
Our company can accept all trading manners, eg. EXW, FOB, CIF etc

- What payment terms do you accept?
We accept T/T.