b43002000 - QSB250 Quarter Swing Butterfly Valve, Manual Operation

QSB250 Quarter Swing Butterfly Valve, Manual Operation

B43002000

Downloading pricing...
List Price:
Web Price:
Please contact customer care for pricing

Overview

The QSB quarter swing valves are compact, quick acting, high conductance isolation valves. The QSB valves have a polished, stainless steel, ISO flanged body with fluoroelastomer ‘O’ ring sealed valve plate and shaft. The valve plate ‘O’ ring groove is vented to help maintain a stable high vacuum. The valve shaft ‘O’ rings and bearings are lubricated with Fomblin® grease to prevent gas bursts from behind the shaft seals.
 
This valve is supplied with a trapped ‘O’ ring.
b43002000 - QSB250 Quarter Swing Butterfly Valve, Manual Operation

QSB250 Quarter Swing Butterfly Valve, Manual Operation

B43002000
Downloading pricing...
List Price:
Web Price:
Please contact customer care for pricing
b43003000 - QSB250P, Single Pnuematic Operation

QSB250P, Single Pnuematic Operation

B43003000
Downloading pricing...
List Price:
Web Price:
Please contact customer care for pricing

Features and Benefits

  • Manual operation
  • High conductivity
  • Resists atmosphere in either direction
  • Compact and quick acting
  • Corrosion resistant construction

Technical Data


Valve plate material AISI 304 stainless steel
Operating pressure range 10-9 - 3000 mbar
8 x 10-10 - 2250 Torr
Maximum pressure differential 1000 mbar / 750 Torr
Operating temperature range 5 - 40 °C
Maximum baking temperature 200 °C (without actuator)
Leak rate < 10-9 mbar l s-1
8 x 10-10 Torr l s-1
Flange Size ISO250
Conductance * 13000 l s-1
Operating Torque 19.5 Nm

 
* Conductance of equivalent tube length

Dimensions

A B C E F G H I J K ØL
mm 335 250 12 242 215 57 104.5 95.5 - - 310
Inches 13.07 9.75 0.47 9.44 8.39 2.22 4.08 3.72 - - 12.09

 1   Actuator cylinder support bracket (QSB63P, QSB100P and QSB160P only)
h02106095 - O-RING FKM GP 0447A Pk 1

O-RING FKM GP 0447A Pk 1

H02106095
Downloading pricing...
List Price:
Web Price:
Please contact customer care for pricing
h02106121 - O-RING FKM GP 1121 Pk 2

O-RING FKM GP 1121 Pk 2

H02106121
Downloading pricing...
List Price:
Web Price:
Please contact customer care for pricing