Stop Check Valve Of Power Station Valves - China

Overview

Purpose

Globe - check valve installed in combined cycle heat on the main steam pipe, prevent the backflow medium, failure occurs when the boiler, quickly close the valve by medium pressure, boiler safety protection effect.

Installation instructions

1 - The valve must be vertically mounted on the pipeline, with the stem upward and the medium flowing in under the seat ring.

2 - Place the electric actuator in such an environment as non- corrosive non- explosive gas and with the ambient temperature- 20~40 degree centigrade and the related humidity 80% .

3 - For the electric actuator, when used with the pipeline of a temperature below 350 degree centigrade, use semi- fluid Li- base lubricating oil( Q/ SY1002- 65) and, when the said temperature is higher than 350 degree centigrade, use GB492- 2N- 4 sodium- base lubricating grease.

Brief account of structure

1 - The valve uses the pressure self- tightened sealing, the higher the pressure, the better the sealing performance, the seal ring uses formed asbestos packing.

2 - The disc move up and down inside of the body to first lift the stem before moving and, upon the medium pressure, to let the valve automatically opened .

ln case of a failure with the boiler, the valve inlet pressure lowers and the medium flows backward to quickly close the valve.

3 - The valve support is connected to the electric actuator to have the valve better sealed.

4 - The sealing face between the disc and the seat ring is formed by plasma spray- welding with Co- base carbide alloy, wearable and good anti- scraping performance.

5 - The stem surface is anti- corrosive nitration processed, of a good anti- corrosiveness and anti- scraping performance.

6 - The valve can be switched in between manual and electric actuation, the power will be automatically cut off in case of the manual actuation and the valve will be closed when turning the handwheel clockwise

Company Contact:

• Posted By: zhejiang hisun automation instrument co.,ltd

• Phone: 8657757789961

• Address: He yi Industrial Zone,Oubei Town, Wenzhou , China

• Email:

• Website: http://www.hisunvalve.com

• Business Description: ZheJiang Hisun automation instrument Co., Ltd. is a valve company which integrates Researching, manufacturing, designing, sales and after services as a specialized unit.
  
  This company is located beautifully in the scenery, scenery joy person's China "township of the pump valve" north the Wenzhou cup the pump valve garden area, the transportation is convenient, the industry is centralized.
  
  We produce "HISUN" brand valve , quality reliabled, variety is completed with nothing .
  
  We took the lead among our peers in China in obtaining TS manufacturing license, ISO9001 certification, CE
  
  certification, API certification .
  
  The company according to ISO9001 manufacture standard strict.
  
  We to rely on Science and technology, we are innovated exertion all the time, exploitation various "HISUN" brand valves and we can according standard , material or drive way to design and produce high quality valves.
  
  The products of HISUN is protected for ahead of technique and manage, In accordance with the marketing philosophy of "all for users", we will application new technique , new technics , new materials unceasingly to to open up and develop new products, we will provide better products and serve, there will be more efforts to construct modernization "HISUN".
  
  Established in 2008, As a control valve supplier specialized in designing and manufacturing high-end control valves and serving high-end customers.
  
  In addition, we have various advanced equipment needed for manufacturing control valves
  
  and nationally advanced control valves flow testing systems.
  
  Our products: linear motion control valves, self-operated control valves, ball valves, power station valves, butterfly valves.
  
  pneumatic actuators,
  
  Our goals:
  
  ---creating value for customers
  
  ---creating value for investors
  
  ---creating value for society
  
  ---creating value for personnel