Valves
AssigneeAeon Corporation
InventorRonald Grandage
Life of this patent
Estimating the term…
Abstract
The invention relates to valves and particularly, though not exclusively, to gate valves. There is provided a valve comprising a housing (1) and a valve member (2) moveable within the housing (1) to open and close the valve. In a first aspect the valve is provided with means to reduce friction between the housing (1) and valve member (2). In a second aspect the valve is provided with an operating member (20) which is associated with the valve member (2) and passes through an aperture (21) in the housing (1) which is sealed when the valve is in the open position. Such a valve addresses difficulties relating to the operation of prior art valves, particularly gate valves, and specifically the difficulties created by frictional drag upon movement of the valve member, and difficulties in maintaining the valve.
Claims16
1-22. (canceled)
A valve comprising a valve housing, a valve member slidable in the valve housing between open and closed positions, and means to reduce friction between the valve member and the valve housing.
A valve comprising:
- a valve housing having an interior surface on an underside of the house;
- a valve member slidable in the valve housing between open and closed positions:
- a valve operating member associated with the valve member and passing out of the valve housing through an aperture;
- seal means for sealing the aperture when the valve member is in the open position, and
- low friction sliding surfaces provided by at least one guide shoe made of low friction material and attachable to the slidable valve member.
Dependencies are inferred from the claim text.