Frd. Wja5.021 Turbine Governors Regulation Security Servo Valve for Power Plant

• 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.: FRD. WJA5.021
• 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
• Transport Package: Cartons
• Specification: FRD. WJA5.021
• Trademark: Customized
• Origin: China
• Production Capacity: 10000 Pieces/Year

Product Description

 

Product Description

The servo valve FRD.WJA5.021 is one of the key components in the DEH system, which achieves precise adjustment of the turbine main steam valve by converting electrical signals into hydraulic signals. This servo valve adopts electro-hydraulic conversion technology, which uses electromagnetic force to convert electrical signals into hydraulic signals, thereby controlling the opening of the main steam valve and regulating the main steam flow rate.

When the servo valve FRD.WJA5.021 receives the electrical signal from the controller, the internal coil generates a corresponding magnetic field based on the received electrical signal. This magnetic field will generate attraction or repulsion force on the iron core on the valve core, causing the valve core to move. The movement of the valve core will change the gap between the hydraulic valve core and the valve seat, thereby adjusting the opening of the main steam valve of the turbine. By controlling the size and direction of the electrical signal, the servo valve can achieve precise adjustment of the main steam valve of the steam turbine.

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:

> High performance: Adopting high-precision control jet tube technology, it has high dynamic response requirements and can provide precise control in pressure or force control systems, speed, and electro-hydraulic position control.

> High sensitivity: With the characteristics of high sensitivity and fast response, it can convert small electrical signals into large hydraulic power, driving various types of loads.

> High pressure capability: Designed to cover the pressure drop range of each valve with a valve core pressure of 35bar (500psi), suitable for high-pressure working environments.

Applications of Servo Valve:

1. Adjust the power output of the turbine by controlling the flow and pressure in the hydraulic system
2. Control the working status of hydraulic motors or cylinders to achieve stable operation and optimized performance.
3. Maintain pressure balance between various hydraulic components within the turbine system.
4. Implement the protection function of the steam turbine system, and be able to respond in a timely manner and take corresponding measures in case of high or low pressure, abnormal flow, etc. in the system to avoid system damage or failure.

 

Related Products

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

solenoid valve oil SV4-10V-C-0-00
Proportional relief valve 5.7A25
check valve gasket 216C65
accumulator globe valve SHV4
HP trip valve F3DG5S2-062A-220AC-50-DFZK-V/B08
solenoid valve cost ZD.02.009
trip overspeed insertion element HGPCV-02-B30
globe valve pn16 100FWJ1.6P
trip solenoid valve F3DG5S2-062A-220DC-50-DFZK-V/B08
Electro-hydraulic servo valve with middle valve G761-3034B
safety valve BXF-40
Fuel Supply Device test solenoid valve 22FDA-F5T-W110R-20/LP
plate throttle valve BXF-25
two-way solenoid valve 0508.919T0301.AW027
liquid stop valve WJ15F1.6P
solenoid trip valve F3DG5S2-062A-50-DFZK-V
stainless steel check valve 216C50 with reverse flange
28mm double check valve 216C80
MSV actuator test solenoid valve 22FDA-F5T-W220R-20/LBO
 

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.