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Piston valves Rings
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Download PDF Bolting Torque Technical Sheet
Size: DN 10 to 200 ( 3/8" to 8")
Rating: PN 16 - 40 - 63 / ASME 150 - 300 / API 800 
Piston Valve Ring

Piston valve section

Our very long experience in manufacturing Piston valves permitted us to introduce, in 1994, a new Piston valve Ring made of metal-alloys-reinforced lamellar graphite.

Their patented composition design and manufacturing have been fixed after a long testing period in laboratories and in plants.

The features of these rings are as follows:
  • durable perfect tightness
  • resistance to temperatures from minus 40 °C up to +550 ºC
  • tightness at very low temperature (tested and certified at -40 ºC)
  • resistance to etching of process fluids
  • practically one valve ring type for all fluids: no confusion and reduction of spare stock
  • low friction coefficient and consequently low torque valve operation
  • longer duration than any other material ring, therefore maintenance free
  • asbestos free

OUR NEW RINGS APPLY ALSO TO A 1926 MANUFACTURED VALVE,
THAT CAN THEREFORE BE RENEWED AS A TODAY SOLD VALVE!

 

A world leader in Valves

Since 1905 Cesare Bonetti S.p.A. has been manufacturing high performance valves and liquid level indicators, both as standard or as custom designed products to meet the exact requirements of any fluid  pressure and temperature handling application. Thanks to our reputation and experience, our trademarks BONETTI, BONT, CMI and WVE are  recognized worldwide as a guarantee in terms of quality reliability and service to our Customers.

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