Pneumatic eccentric half ball valve

Pneumatic eccentric half ball valve
Model:BQ641M
Brand:Quanshun
Origin:Made In China
Category:Industrial Supplies / Other Industrial Supplies
Label:valve , half ball valve
Price: -
Min. Order:1 pc
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Product Description

■ Brief introduction
 
The executive system is pneumatic driven. A single cylinder or double cylinders are available according to the size of valve diameter. The advantages of semi-spherical valves have been fully developed to fulfill automation or semi-automation of valve operation. They are divided into 4 types: QBQ641W, QBQ641H, QBQ641M, and QBQ641M1, and have the following advantages:
 
1.Straight through. It is made for single direction sealing and an eccentric structure. The ball is divorced from the valve body when opening, therefore assuring a straight passage and making it impossible for the flow to be jammed.
2.Easy open and close. There is no contact between the valve core and the valve seat when opening, therefore causing little torque and free turning. While the function of squeezing and cutting between the semi-sphere and seat removes the fouling adhesives on the sealing surfaces when closing, therefore assuring a tight and reliable sealing.
3.The eccentric structure of the sealing surface enables an automatic repairing of the spherical wearing. This results in a good sealing, long working life, and safety and reliability.
4.The valve is a kind of hard sealing structure. Different anti-abrasive alloys are chosen for different medium. At the same time the hardness and anticorrosion are also guaranteed.
 
 
■ Main Specifications
Nominal Pressure
0.6
1.0
1.6
2.0
2.5
4.0
5.0
6.4
10
Shell Test Pressure
0.9
1.5
2.4
3.0
3.8
6.0
7.5
9.6
15
High Pressure Sealing Test
0.66
1.1
1.76
2.2
2.75
4.4
5.5
7.04
11
Applicable Medium & Temperature
QBQ641W
water, vapor, pulp and other solutions.              t≤425℃
QBQ641H
Natural gas, coal gas, liquefied gas crude oil, heavy oil. t≤425℃
QBQ641M
Conveying of solutions and ore slurry.              t≤425℃                              
QBQ641M1
Alumina powder, coal powder, coal ash, dusty gas, waste residues, etc.                                          t≤350℃


Note: The pressure of air sealing test is 0.6 MPa in all cases.
 
■ Materials and Codes of Main Parts
 
Name of parts
QBQ641W
QBQ641H
QBQ641M
QBQ641M1
Valve body
Carbon steel
Carbon steel, WCB, Stainless steel
Carbon steel
Carbon steel, WCB
Stem
45#
45#2Cr13
45#40Cr
45#
Sealing set of disc
Nitriding steel
Special hard alloy steel Cr-Mn-Si
Special hard alloy steel Cr-Mo-V
Special hard alloy steel Cr-Mo-V
Sealing set of seat
W
Special hard alloy steel Cr-Mn-Si
Special hard alloy steel Cr-Mo-V
Special hard alloy steel Cr-Mo-V
 
Note:
1. The product adopts convex flanged, flanging sizes in accordance with GB/T 9113. 1- 2000.
2. Refer to GB 12221-89 for structure lengths.
3. Refer to GB-122237-89 for technical specification of manufacturing and acceptance.
4. JB/T 9092-1999 and GB/T13927-92 are followed for pressure test.
Pneumatic eccentric half ball valve 1

Member Information

Henan Quanshun Flow Control Science & Technology Co., Ltd.
Country/Region:He Nan - China
Business Nature:Manufacturer
Phone:78777135
Contact:Ella (Sales Supervisor)
Last Online:23 Nov, 2012