Valve with reversible valve seat for high-pressure pump (HP)

Details Valve with reversible valve seat for high-pressure pump (HP) Valve with reversible valve seat for high-pressure pump (HP)

2006-09-12

2006-09-12

Jacyna, J. Casimer (Department: 3751)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S515300, C251S368000

Reexamination Certificate

active

07104276

ABSTRACT:
High-pressure valve for high-pressure pump, which has a valve body with inlet and outlet, the cylinder chamber of the pump piston rod being connected to the said valve body. The inlet communicates with the cylinder chamber via a bore which houses a first valve seat with a valve ball. Moreover, the cylinder chamber is connected via a further bore with the outlet, said bore housing a valve seat with its valve ball. This device is characterised in that each valve seat with its valve ball is designed as ball check valve and thus forms an assembly. These ball check valves are removable from the valve body, the link between valve and valve body preferably being designed as single or multiple bolting. An ideal embodiment of the invention provides for ball check valves with external male threading and for a female threading in the recess accommodating the check valves.

REFERENCES:
patent: 4026322 (1977-05-01), Thomas
patent: 4862911 (1989-09-01), Yie
patent: 5406978 (1995-04-01), Smolong
patent: 5782269 (1998-07-01), Seaney et al.
patent: 2 259 549 (1974-06-01), None
patent: 27 21 390 (1978-11-01), None
patent: 296 04 196 (1997-05-01), None
patent: 197 47 636 (1999-05-01), None
patent: 0 408 177 (1991-01-01), None

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