SP Speedivalves are diaphragm 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 NW flanges and can be pipeline supported or panel mounted. (SP40K is pipeline supported only)

Features and Benefits

  • Easy to operate with visual indication of valve open (SP10K to SP25K)
  • 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 (SP10K to SP40K, with Co-Seal)
Technical data  
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