Valves

Bombas válvulas

 

Pump valves are made up of seats and balls and are a key component that works under high hydraulic pressure due to depth. Only a perfect design and the right choice of materials can guarantee their run life.

 

Bolland offers the following types and materials that can be combined in different ways:

 

TIPE MATERIALS HARDNESS
  ST - Stainless Steel AISI – 440 C Seat     77 a 79 HRA
         Seat and Ball Heat-treated Ball       80 a 84 HRA
  M - Maxalloy  ( Stellite ) Co, Cr and W alloy Seat     50 a 56 HRc
       Seat and Ball   Ball       56 a 63 HRc
  C - Tungsten Carbide Tungsten Carbide Seat     88 a 89 HRA
        Seat and Ball   Ball       88 a 89 HRA
  CN - Tungsten Carbide  Seat – Tungsten Carbide Seat     88 a 89 HRA
          with Silicon Nitride Ball – Silicon Nitride Ball       89 a 90 HRA
  CT - Tungsten Carbide  Seat – Tungsten Carbide Seat     88 a 89 HRA
    Correr with Titanium Carbide Ball – Titanium Carbide Ball       89 a 90 HRA
 CM - Tungsten Carbide  Seat – Tungsten Carbide Seat     88 a 89 HRA
         with Maxalloy Ball – Co, Cr and W alloy Ball      56 a 63 HRc
  CI - Tungsten Carbide  Seat – Tungsten Carbide Seat     88 a 89 HRA
         with Stainless Steel Ball – AISI 440 C Ball       80 a 84 HRA
  CQ - Tungsten Carbide Seat – Tungsten Carbide Seat     88 a 89 HRA
     Correr with Nickel Carbide Ball – Nickel Carbide Ball       89 a 90 HRA
  Q - Nickel Carbide Nickel Carbide Seat     88 a 89 HRA
        Seat and Ball   Ball       89 a 90 HRA

 

Bolland y Cía SA reserves the right to change technical specifications without notice.

 

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