Cartridge Valve Insert
Function DC15 - 1:1.5 ratio direct check
The type DC15 insert is used with the type B cover to provide a direct check function, Figure 10. The free flow direction is A to B. Flow in the opposite direction (B to A) is prevented by connecting port B to the full poppet area AAP, via drilled holes on the poppet, whereby any pressure at port B assists the spring in holding the poppet hard on to its seat.