MANOY® System Seal WP

Type 434

MANOY® System Seal WP

Type 439

TECHNICAL DATAS

outer sealing inner sealing
Motion Motion
linear, partially rotary, partially static linear, partially rotary, partially static
Direction of pressure Direction of pressure
unidirectional, bidirectional unidirectional, bidirectional
Operating pressure (MPa) Operating pressure (MPa)
40 40
Linear speed (m/s) Linear speed (m/s)
5 10
Diameter range (mm) Diameter range (mm)
150 to 9999 150 to 9999
Housing Housing
non-split
(from 150 mm Ø) 		non-split
(from 150 mm Ø)
Type 434 outer sealing
Motion linear, partially rotary, partially static
Direction of pressure unidirectional, bidirectional
Operating pressure (MPa) 40
Linear speed (m/s) 5
Diameter range (mm) 150 to 9999
Housing non-split
(from 150 mm Ø)
Type 439 inner sealing
Motion linear, partially rotary, partially static
Direction of pressure unidirectional, bidirectional
Operating pressure (MPa) 40
Linear speed (m/s) 10
Diameter range (mm) 150 to 9999
Housing non-split
(from 150 mm Ø)

APPLICATIONS

  • Developed for use on the slid­ing ring 
  • Also suit­able for expan­sion joints

CHARACTERISTICS

  • Small base cross-sec­tions cause only slight com­pon­ent stress 
  • Expan­sion and deform­a­tion under pres­sure can be equalized
  • Optim­um effi­ciency due to low fric­tion­al force and seal­ing pro­file divided into func­tion­al areas
  • Long life due to out­stand­ing wear resistance
  • For ret­ro­fits these seals can be adap­ted to the install­a­tion dimensions 
  • Avail­able in any diameter

TEMPERATURE RANGE

From -20 to +200 °C

but depend­ent on the seal­ing ring mater­i­al and the O-ring mater­i­al in each case.

MATERIALS

IDG stand­ard seal­ing ring material

  • 57A up to ca. 1,450 mm Ø
  • 57B over ca. 1,450 mm Ø

O-ring elast­omer

  • NBR

Mater­i­al descrip­tion and oth­er mater­i­als for wider applic­a­tions FIND OUT MORE >

Spher­ic­al valves are installed upstream of the tur­bine as shut-off devices spe­cific­ally for high pres­sures at the end of the pen­stock. Their main func­tion is to close off the pen­stock dur­ing nor­mal shut­down or load shed­ding of the turbine.

The seal is a met­al slid­ing ring which is gen­er­ally moved by water hydraulics.

The MANOY® sys­tem seal WP, type 434 (out­er seal­ing) and the inner seal­ing type 439, were developed for seal­ing of the slid­ing ring.

The pro­file dimen­sions can be cus­tom­ized for main­ten­ance or spe­cif­ic requirements.