Crane Process Flow Technologies
22
SaundersKB TypeDiaphragmValves
Straight ThroughBores
Saunders full bore KB type diaphragm valves,
with their smooth non-turbulent body design have
proved to be outstanding in resisting the erosive
effects of corrosive and corrosive/abrasive line
media. In addition, the full bore concept is
designed for minimum flow resistance whilst
allowing rodding out and easy cleaning.
Low pressure drop and high flow characterise the
efficiency of operation of these valves. The flexible
diaphragm ensures consistent leak tightness even
when solids, powders and dry media are present.
Valve blockage and wear due to slurry build up on
the valve internals are significantly reduced by the
straight through design.
In addition to the range of unlined screwed and
flanged bodies, rubber linings and glass coatings
are available for the more exacting corrosive and
abrasive applications to a maximumworking
pressure of 10 bar.
Features
Benefits
Straight through body, high flow
No obstruction, low pressure drop
Flexible closure evenwith solids present Leaktight by design
Only two wetted parts
Better resistance to corrosion/abrasion
and longer life
Specially developed linings and
diaphragms available
Minimal maintenance
Valve flow
Smooth bore straight through body gives high
flow performance withminimum turbulence,
while giving 100% leaktight closure.
Lubrication
Bonnet assembly lubricated for long life. Needs
no further grease. The indicator lip seal stops
the ingress of dust, dirt and atmospheric
contaminates.
Ease ofmaintenance
Three part design allows maintenance and
actuator retrofitting without removing the valve
body from the pipeline. Extended life, reliability
and safety, combined with essentially simple
design, result in lowmaintenance and low cost
of ownership.
Valve usable in any position
The KB valve can be installed in any position
without affecting its operation. We recommend
six times pipe diameter from pump or bend.
