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.