QZ-C Carbon Steel, QZ-B Stainless Steel Series Flanged Pneumatic Gate Valve〈Open/Closed or Regulating Type〉-China top 10 valve Manufacturers, Suppliers, Factory

01. Mounted at any angle, keep cylinder position indicator vertically upward&installed horizontally which may extend life span
02. Emergency manual device (operating mechanism) optional. Air source pressure: 3~8bar
03. No limit to viscosity and flow direction
04. Valve body material: Cast Steel WCB (code: C), SS304 (code: B), SS316 (code: R), SS316L (code: L)
05. Nominal pressure: Normal---PN16bar, CL150Lb, special---PN25～250bar, CL300～1500Lb
06. Sealing material: Normal hard seal---hard alloy (code: Y), alloy steel (code: H), body material (code: W)
special sealing material depends on the lining material of valve body, e.g. rubber lining,

fluorine lining and ceramic lining, etc.
07. Control mode: QZ11---Single Acting NC QZ12---Single Acting NO QZ2---Double Acting Control
QZ114X---single acting NC regulating type QZ124X---single acting NO regulating type
QZ24X---double acting regulating type
Note: X=1 refers to the regulating type 4~20mA. DC input and no signal output (normal)
X=2 refers to the regulating type 4~20mA. DC input and output (special)
08. Special configuration: QZ-&---with emergency manual device QZ-◆---with position limit switch (valve position signal output)

Table of Applicable Medium Temp. Range for Common Valve Body Materials and Seals

Notes:

*represents the temperature of conventional applicable medium.
When the valve body is lined with rubber, fluorine and ceramic, the applicable medium temperature depends on lining material.

Component and Material Table

Note: □---nominal diameter.

Structure Diagram

Main Technical Data

Outline&Connection Dimension (National/American Standard Series)

Notes:

The flange is manufactured according to JB/T79-1994 standard by default, sealing surface of PN16bar, PN25bar is raised face, PN40bar is female face and can also be manufactured according to the standards specified by users, such as GB/T9124, HG/T20592, ANSI, JIS, DIN and other standards.
National Standard structure length is in compliance with GB/T12235, American Standard is in compliance with ANSI B16.10.
American Series 2"～24" flange dimension is in compliance with ANSI B16.5, 28"～32" in compliance with ANSI B16.47.

Keywords： QZ-C Carbon Steel, QZ-B Stainless Steel Series Flanged Pneumatic Gate Valve〈Open/Closed or Regulating Type〉

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