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Edwards SP25K Speedivalve (KF25) Fluoroelastomer Diaphragm | C33355000

Product Details

Edwards SP25K Speedivalve has a viton fluoroelastomer diaphragm and are sealed in-line, isolation valves. The construction consists essentially of a flexible elastomeric dia­phragm which is sealed onto a lightly polished seat by a screw thread mechanism. The mechanism is isolated from the system by the diaphragm resulting in an extremely rugged and ‘dirty’ system tolerant valve.

The valve terminates in a KF25 (NW25) flange and can be pipeline supported or panel mounted.

Features and Benefits | C33355000

  • The manual isolation valve with KF25 flange is easy to operate with visual indication of valve open
  • Leak tight to better than 10-6 mbar ls-1 / 8 x 10-7 Torr ls-1
  • Diaphragm completely isolates mechanism from vacuum system
  • Extremely rugged and ‘dirty’ system tolerant
  • Will withstand 9 bar overpressure (with Co-Seal)

These vacuum rated isolation valves are also available in KF16 and KF40 flange sizes.

Body: Aluminum alloy to BS1490
Handwheel and bonnet: Glass reinforced plastics
Diaphragm: Viton fluoroelastomer
Maximum leak rate across body: 10-6 mbar l s-1 / 7.5 x 10-7 Torr l s-1
Maximum leak rate coupling: 10-7 mbar l s-1 / 7.5 x 10-8 Torr l s-1
Molecular conductance: 9.0 l s-1
Pressure Rating using Co-Seal: 9 bar / 131 psi
Panel thickness: 3mm or .117 inch maximum
Weight: (g/oz) 760 / 26.6
Baking Temp: 60 °C

Suitable for panel mounting. These Speedivalves are primarily for vacuum processes.

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Technical Specifications

Construction materials
Body Aluminium alloy to BS1490
Hand wheel and bonnet Glass reinforced plastics
Diaphragms Nitrile or Fluoroelastomer
Leak rate (1 bar / 14.5 psi differential)
Valve (overall and across seat) 10-6 mbar ls-1
8 x 10-7 Torr ls-1
Coupling 10-7 mbar ls-1
8 x 10-8 Torr ls-1
Molecular conductance
  SP10K, SP16K 1.7 ls-1
  SP25K 9.0 ls-1
  SP40K 23.3 ls-1
Pressure rating using Co-Seal 9 bar / 131 psi
Ambient operating range 0 to 40 °C
Ambient storage range -10 to 40 °C
Panel thickness 3 mm / 0.117 in maximum
  SP10K 230 g / 8.1 oz
  SP16K 240 g / 8.4 oz
  SP25K 760 g / 26.6 oz
  SP40K 2300 g / 80.5 oz
Baking temperature 60 °C
Edwards SP25K Speedivalve Fluoroelastomer Diaphragm | C33355000
Edwards SP25K Speedivalve KF25 Fluoroelastomer Diaphragm | C33355000