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Eccentric Half Ball Valve

Eccentric Half Ball Valve

Basic Info Type: Eccentric Half Ball Function: Flow Regulating Temperature: High Temperature Application: Industrial Usage, Water Industrial Usage Temperature Applicable: 29 ~540oC Specification: DN40 ~ DN600 Origin: China Product Description Eccentric half ball is a relatively new type of ball...

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Details

Basic Info

Type: Eccentric Half Ball

Function: Flow Regulating

Temperature: High Temperature

Application: Industrial Usage, Water Industrial Usage

Temperature Applicable: 29 ~540oC

Specification: DN40 ~ DN600

Origin: China

Product Description

Eccentric half ball is a relatively new type of ball category, it has its own unique structure of some advantages, such as switches without friction, sealing easy to wear, opening and closing small torque. Such actuators can be reduced with the specifications. With multi-turn electric actuators, can be realized on media regulation and tight cut. Widely used in petroleum, chemical, water supply and drainage and other cities demanding cutting conditions.


Eccentric half ball structural characteristics and uses:
Good sealing performance: the end of a spring metal seat sealing surface to ensure adequate pre-jacking force, in the course of the valve sealing surface wear in the valve spring to ensure good sealing performance; And when high media pressure, unbalanced force generated media sphere guarantee seal.
Bottoms type using stem, set back seal structure ensures a reliable seal packing department.
Top-mounted design: Just remove the valve cover to repair or replace parts.
Widely used in dust, particles, high viscosity medium.

Eccentric half ball Standard:
Design:GB12237-89
Flanged:GB/T17241.6998,GB/T9115(Steel)
Length of the structure:GB12221-89

Eccentric half ball and working conditions of parts and materials:

NameMaterial
BodyQT450,WCB,ZG20CrMo,ZG1Cr18Ni9Ti
Valve shaft2Cr13,1Cr13
ValveNitriding alloy steel, nitriding steel, wear-resistant steel
SeatNitriding alloy steel, nitriding steel, wear-resistant steel
BearingAluminum bronze, FZ-1 composites
PackingPTFE, flexible graphite


Main parts and materials eccentric half ball:

NameMaterial
BodyQT450,WCB,ZG20CrMo,ZG1Cr18Ni9Ti
Valve shaft2Cr13,1Cr13
ValveNitriding alloy steel, nitriding steel, wear-resistant steel
SeatNitriding alloy steel, nitriding steel, wear-resistant steel
BearingAluminum bronze, FZ composite materials
PackingPTFE, flexible graphite


Eccentric half ball performance parameters:

ominal(Mpa)0.61.01.62.54.0
Nominal by(mm)40-60040-60040-60040-60040-600
Sealing test pressure(Mpa)0.661.11.762.754.4
Shell test pressure(Mpa)0.91.52.43.756.0
Temperature(oC)-29~300,-29~425,-29~540
For mediaWater, sea water, sewage, acid and other liquids, slurries, steam, gas, oil
Drive modeManual, electric, pneumatic
ConnectionFlanged, wafer connection
InstallationVertical installation, horizontal installation



 

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